{"title":"Rear Main Seal Adapters","description":null,"products":[{"product_id":"allstar-performance-repl-p-bolt-w-nut-for-all26125","title":"Allstar Performance Replacement P-Bolt with Nut — Fits Allstar Rear Main Seal Adapter ALL26125","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/xKiokoEYAQA\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eAllstar Performance P-Bolt and Nut Kit\u003c\/h2\u003e\u003cp\u003eWhen assembling your engine, every fastener matters. The Allstar Performance Replacement P-Bolt with Nut is specifically designed to secure your Allstar rear main seal adapter (ALL26125). Manufactured from high-strength steel and finished with a durable black oxide coating, this hardware kit provides the clamping force and corrosion resistance necessary for critical engine internal components.\u003c\/p\u003e\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePrecision Fit:\u003c\/strong\u003e Specifically machined for the Allstar rear main seal adapter system.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-Strength Steel:\u003c\/strong\u003e Engineered to handle the stresses of high-performance engine environments.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBlack Oxide Finish:\u003c\/strong\u003e Provides an extra layer of protection against oxidation and wear.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes both the P-Bolt and the matching nut for a hassle-free installation.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEngine building requires precision and the right parts to ensure longevity and reliability. Using the correct hardware for your rear main seal adapter prevents leaks and ensures the adapter remains perfectly aligned under load. This kit is a must-have for any engine builder performing maintenance or upgrades on an engine utilizing Allstar sealing solutions. Don't compromise your engine's integrity with generic hardware; choose the components designed by the experts at Allstar Performance. Whether you are refreshing a race engine or building a new one from the ground up, GGCRACING has the specialized components you need to get the job done right.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Replacement P-Bolt with Nut \\u2014 Fits Allstar Rear Main Seal Adapter ALL26125\",\"description\":\"Secure your engine components with the Allstar Performance P-Bolt and Nut kit. Precision-engineered for Allstar rear main seal adapters. Buy at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Allstar Performance\"},\"mpn\":\"ALL99135\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-repl-p-bolt-w-nut-for-all26125\",\"offers\":{\"@type\":\"Offer\",\"price\":\"34.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-repl-p-bolt-w-nut-for-all26125\",\"sku\":\"DNLF_ALL99135\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Allstar Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Allstar+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Allstar Performance Replacement P-Bolt with Nut \\u2014 Fits Allstar Rear Main Seal Adapter ALL26125\",\"item\":\"https:\/\/ggcracing.com\/products\/allstar-performance-repl-p-bolt-w-nut-for-all26125\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Allstar Performance Replacement P-Bolt with Nut \\u2014 Fits Allstar Rear Main Seal Ad fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Replacement P-Bolt with Nut \\u2014 Fits Allstar Rear Main Seal Ad?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41351398817876,"sku":"DNLF_ALL99135","price":34.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ALL99135.jpg?v=1719186762"},{"product_id":"canton-rear-seal-adapt-pre-86","title":"Canton Rear Main Seal Adapter 1-Piece to 2-Piece — Fits Small Block Chevy","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Canton\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eCanton engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Canton lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/FDBYL-HvGFI\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eCanton Rear Main Seal Adapter for Small Block Chevy\u003c\/h2\u003e\u003cp\u003eUpgrade your classic Small Block Chevy engine with the Canton Rear Main Seal Adapter. This precision-engineered kit allows you to install a modern 1-piece rear main seal into a pre-1986 2-piece rear main seal block. This is an essential upgrade for any engine builder looking to modernize their classic powerplant and eliminate common oil leaks associated with older seal designs.\u003c\/p\u003e\u003ch3\u003eProduct Highlights\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eBillet Aluminum Construction:\u003c\/strong\u003e Machined from high-quality billet aluminum for maximum durability and a perfect seal.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModern Sealing Technology:\u003c\/strong\u003e Enables the use of a 1-piece rear main seal, providing superior oil containment compared to traditional 2-piece designs.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eComplete Kit:\u003c\/strong\u003e Includes all necessary hardware for a straightforward installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNatural Finish:\u003c\/strong\u003e Professional-grade natural finish that looks great in any engine build.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eOil leaks at the rear main seal are a common frustration for classic car enthusiasts. By utilizing this Canton adapter, you can effectively modernize your engine's sealing system, saving time and money on future maintenance. This adapter is designed to fit pre-1986 Small Block Chevy engines, ensuring a precise fitment that maintains proper alignment and sealing integrity. Whether you are building a street machine or a dedicated track car, this adapter is a must-have for a reliable, leak-free engine. Trust in the quality of Canton Racing Products to keep your engine running clean. Find this and other premium engine components at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Canton products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cantonsbc-t-sump-drag-race-oil-pan-8qt\" style=\"color:#0066cc;text-decoration:none;\"\u003eCanton Racing SBC T-Sump Drag Race Oil Pan — 8qt Capacity\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/canton7in-sbc-circle-track-pan\" style=\"color:#0066cc;text-decoration:none;\"\u003eCanton SBC Circle Track Oil Pan — 7in Deep 8qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cantonsbc-circle-track-pan\" style=\"color:#0066cc;text-decoration:none;\"\u003eCanton SBC Stock Appearing Circle Track Oil Pan — 5qt\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cantonoil-pump-pick-up\" style=\"color:#0066cc;text-decoration:none;\"\u003eCanton Oil Pump Pick-Up for Ford 2300 Oval Track\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cantonsbc-open-chassis-c-t-pro-oil-pan\" style=\"color:#0066cc;text-decoration:none;\"\u003eCanton Racing 11-186 Open Chassis Pro Oil Pan — Fits Small Block Chevy\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Canton Rear Main Seal Adapter 1-Piece to 2-Piece \\u2014 Fits Small Block Chevy\",\"description\":\"Convert your Small Block Chevy with the Canton Rear Main Seal Adapter. High-quality billet aluminum for pre-86 blocks. Get yours at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Canton\"},\"mpn\":\"21-850\",\"url\":\"https:\/\/ggcracing.com\/products\/canton-rear-seal-adapt-pre-86\",\"offers\":{\"@type\":\"Offer\",\"price\":\"225.00\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/canton-rear-seal-adapt-pre-86\",\"sku\":\"BGTF_21-850\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Canton\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Canton\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Canton Rear Main Seal Adapter 1-Piece to 2-Piece \\u2014 Fits Small Block Chevy\",\"item\":\"https:\/\/ggcracing.com\/products\/canton-rear-seal-adapt-pre-86\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Canton Rear Main Seal Adapter 1-Piece to 2-Piece \\u2014 Fits Small Block Chevy fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Canton?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Canton Rear Main Seal Adapter 1-Piece to 2-Piece \\u2014 Fits Small Block Chevy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Canton","offers":[{"title":"Default Title","offer_id":41434350157908,"sku":"BGTF_21-850","price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/CAN21-850.jpg?v=1721420699"},{"product_id":"allstar-performance-rear-main-seal-adapter-86-up-pan","title":"Allstar Performance Rear Main Seal Adapter — Fits 1986-Up Small Block Chevy","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/gNe3kYZuBnU\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eAllstar Performance Rear Main Seal Adapter for SBC\u003c\/h2\u003e\u003cp\u003eBuilding a custom engine often involves mixing and matching parts from different eras. The Allstar Performance Rear Main Seal Adapter is the perfect solution for builders looking to install a 2-piece rear main seal crankshaft into a 1986-and-up 1-piece rear main seal Small Block Chevy engine block. This precision-machined adapter ensures a leak-free seal and proper alignment, allowing you to utilize older, proven crankshaft designs in newer engine blocks.\u003c\/p\u003e\u003ch3\u003eProduct Specifications and Benefits\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAllows use of 2-piece rear main seal crank in 1-piece block\u003c\/li\u003e\n\u003cli\u003ePrecision-engineered for a secure, leak-proof fit\u003c\/li\u003e\n\u003cli\u003eDurable construction for long-term engine reliability\u003c\/li\u003e\n\u003cli\u003eIdeal for custom engine builds and performance street applications\u003c\/li\u003e\n\u003cli\u003eSimplifies the transition between different SBC engine generations\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eEngine building requires precision, and using the right adapters is key to a successful project. Allstar Performance is known for high-quality, reliable components that make complex engine swaps easier. This adapter kit is designed to meet the rigorous demands of automotive enthusiasts and professional engine builders alike. By bridging the gap between different Small Block Chevy generations, this part provides the flexibility you need for your performance build. Ensure your engine is built to last with high-quality components from GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy\",\"description\":\"Easily install a 2-piece crank in a 1-piece rear main seal block with this Allstar Performance adapter. High-quality engine components at GGCRACING.\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Allstar Performance\"},\"mpn\":\"ALL26126\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-rear-main-seal-adapter-86-up-pan\",\"offers\":{\"@type\":\"Offer\",\"price\":\"132.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/allstar-performance-rear-main-seal-adapter-86-up-pan\",\"sku\":\"DNLF_ALL26126\"}}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/ggcracing.com\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Parts \u0026 Accessories\",\"item\":\"https:\/\/ggcracing.com\/collections\/parts-\u0026-accessories\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Allstar Performance\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Allstar+Performance\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy\",\"item\":\"https:\/\/ggcracing.com\/products\/allstar-performance-rear-main-seal-adapter-86-up-pan\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy fit my vehicle?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Compatibility depends on your exact year, make, and model. Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1986-Up Small Block Chevy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. See manufacturer documentation for torque specs and procedures.\"}}]}\u003c\/script\u003e","brand":"Allstar Performance","offers":[{"title":"Default Title","offer_id":41441042563156,"sku":"DNLF_ALL26126","price":132.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/ALL26126.jpg?v=1721504501"},{"product_id":"allstar-performance-rear-main-seal-adapter-pre-86-pan","title":"Allstar Performance Rear Main Seal Adapter — Fits 1955-86 Small Block Chevy","description":"\u003cdiv style=\"background:#f7f7f7;border-left:4px solid #c00000;padding:14px 18px;margin:0 0 18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;font-size:1.1em;\"\u003eAbout Allstar Performance\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eAllstar Performance is America's leading circle-track racing parts manufacturer. From aluminum panels and chassis components to brake hardware, steering boxes, and oval-track shock packages — every Allstar product is born from sprint car and modified racing experience.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:24px 0 8px;\"\u003eWatch in action\u003c\/h3\u003e\u003cdiv style=\"position:relative;padding-bottom:56.25%;height:0;overflow:hidden;margin:0 0 18px;border-radius:6px;\"\u003e\u003ciframe src=\"https:\/\/www.youtube.com\/embed\/gNe3kYZuBnU\" style=\"position:absolute;top:0;left:0;width:100%;height:100%;border:0;\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture\" allowfullscreen loading=\"lazy\"\u003e\u003c\/iframe\u003e\u003c\/div\u003e\n\u003ch2\u003eUpgrade Your SBC Rear Main Seal\u003c\/h2\u003e\u003cp\u003eModernize your classic Small Block Chevy engine with the Allstar Performance Rear Main Seal Adapter. This kit is specifically engineered to allow the installation of a modern 1-piece rear main seal into a traditional 1955-86 2-piece rear main seal block. By bridging the gap between vintage engine blocks and modern sealing technology, this adapter significantly reduces the risk of oil leaks, keeping your engine bay clean and your oil pressure consistent.\u003c\/p\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eApplication: 1955-86 Small Block Chevy\u003c\/li\u003e\n\u003cli\u003eConversion: 1-Piece Block to 2-Piece Crank\u003c\/li\u003e\n\u003cli\u003eMaterial: Premium Aluminum\u003c\/li\u003e\n\u003cli\u003eKit Includes: Adapter and necessary hardware\u003c\/li\u003e\n\u003cli\u003eFunction: Prevents rear main oil leaks\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis adapter is a must-have for engine builders performing a rebuild or a performance upgrade on a classic Chevy small block. The high-quality aluminum construction ensures a perfect fit and long-lasting durability under high-stress conditions. By eliminating the common leak points associated with older 2-piece seal designs, you can focus on performance rather than maintenance. Installation requires proper preparation of the block, but the results provide peace of mind for high-performance street and track applications. Ensure your engine is sealed correctly with this precision-engineered kit. Find the best engine internal components and sealing solutions at GGCRACING.\u003c\/p\u003e\n\u003cdiv style=\"margin:24px 0;border-top:1px solid #eee;padding-top:18px;\"\u003e\n\u003ch3 style=\"margin:0 0 6px;\"\u003eOften bought with\u003c\/h3\u003e\n\u003cp style=\"font-size:0.9em;color:#555;margin:0 0 8px;\"\u003eOther popular Allstar Performance products customers consider together:\u003c\/p\u003e\n\u003cul style=\"padding-left:20px;margin:0;\"\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/asphalt-tire-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Asphalt Tire Setup Log Book — 50 Sheet Pad\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/circle-track-set-up-book\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Circle Track Set-Up Book - Chassis Setup Chart\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-8pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 8 Pack Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-log-decals-40pk\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance Tire Log Decals — 40 Pack Bulk Information Stickers\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/tire-spoon-24in-straight-w-round-end\" style=\"color:#0066cc;text-decoration:none;\"\u003eAllstar Performance 24in Straight Tire Spoon w\/ Round End — Steel\u003c\/a\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\/\",\"@type\":\"Product\",\"name\":\"Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1955-86 Small Block Chevy\",\"description\":\"Convert your 1955-86 SBC to a 1-piece rear main seal with this Allstar Performance adapter kit. 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Contact our experts at GGCRACING with your VIN and we'll verify before you order.\"}},{\"@type\":\"Question\",\"name\":\"How long is shipping for Allstar Performance?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most in-stock items ship same or next business day. Free shipping on orders over $99 in the continental US. Tracking is provided via email as soon as your order leaves our warehouse.\"}},{\"@type\":\"Question\",\"name\":\"How do I install the Allstar Performance Rear Main Seal Adapter \\u2014 Fits 1955-86 Small Block Chevy?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most installs are bolt-on with basic hand tools. 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