{"product_id":"main-bearing-set-184","title":"Sealed Power 4040M20 Main Bearing Set - 0.020in Undersize — Fits Pontiac V8","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 Sealed Power\u003c\/h3\u003e\n\u003cp style=\"margin:0;font-size:0.95em;line-height:1.55;\"\u003eSealed Power engineers high-quality automotive parts and accessories trusted by enthusiasts and shops across North America. At GGCRACING we stock the full Sealed Power lineup with fast shipping and expert fitment support — order with confidence.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch2\u003eSealed Power 4040M20 Main Bearing Set for Rebuilt Pontiac V8 Engines\u003c\/h2\u003e\u003cp\u003eRestore the integrity and performance of your Pontiac V8 engine with the Sealed Power 4040M20 Main Bearing Set. This comprehensive kit provides main bearings with a 0.020 inch undersize, specifically designed for crankshafts that have undergone significant machining. These bearings are crucial for maintaining proper oil clearances and ensuring the smooth, reliable rotation of the crankshaft within the engine block, even after substantial journal grinding.\u003c\/p\u003e\u003ch3\u003eRobust Construction for Modified Crankshafts\u003c\/h3\u003e\u003cp\u003eEach bearing in the Sealed Power 4040M20 set is manufactured from durable, high-grade materials capable of withstanding the immense forces and thermal stresses within a performance V8 engine. The precise 0.020 inch undersize ensures an exact fit for re-ground crankshafts, preventing excessive play and promoting optimal oil film development. This critical fitment is key to preventing premature wear and extending the life of your Pontiac V8.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003ePart Number:\u003c\/b\u003e 4040M20\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eUndersize:\u003c\/b\u003e 0.020 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eEngine Compatibility:\u003c\/b\u003e Pontiac V8\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQuantity:\u003c\/b\u003e Complete Kit\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Advanced bearing alloy for maximum durability\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eEssential for Professional Engine Rebuilds\u003c\/h3\u003e\u003cp\u003eWhen undertaking a serious engine rebuild, particularly one involving crankshaft re-machining, the quality of your main bearings is non-negotiable. The Sealed Power 4040M20 set provides the precision and strength required for a successful and long-lasting Pontiac V8 engine. Trust in Sealed Power's reputation for excellence to provide the critical components that form the backbone of your engine's rotating assembly. Find all your engine rebuild essentials 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 Sealed Power 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\/speed-pro-performance-2015-x3009-r1006\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Speed Pro Performance Street Catalog – 2015 Edition\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/cam-bearing-set-36\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Cam Bearing Set Standard Journal — Fits Small Block Chevy V8\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/main-bearing-spacer-set\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Main Bearing Spacer Set Standard — Fits 351C Crank in SBF\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rod-bearing-171\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power 1555CPA10 Connecting Rod Bearing - 0.010 in Undersize - Pontiac V8\u003c\/a\u003e\u003c\/li\u003e\n\u003cli style=\"margin:4px 0;\"\u003e\u003ca href=\"https:\/\/ggcracing.com\/products\/rod-bearing-172\" style=\"color:#0066cc;text-decoration:none;\"\u003eSealed Power Rod Bearing 0.020 Undersize — Fits Pontiac V8 Engines\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\":\"Sealed Power 4040M20 Main Bearing Set - 0.020in Undersize \\u2014 Fits Pontiac V8\",\"description\":\"Rebuild your Pontiac V8 with a Sealed Power 4040M20 main bearing set, 0.020in undersize. 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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 Sealed Power?\",\"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 Sealed Power 4040M20 Main Bearing Set - 0.020in Undersize \\u2014 Fits Pontiac V8?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most plug-and-play LED upgrades take 15-30 minutes per side. Full retrofits or harness installs may require additional wiring.\"}}]}\u003c\/script\u003e","brand":"Sealed Power","offers":[{"title":"Default Title","offer_id":41013695938644,"sku":"BDBR_4040M20","price":173.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/SEA4040M20.jpg?v=1715888663","url":"https:\/\/ggcracing.com\/products\/main-bearing-set-184","provider":"GGCRACING INC","version":"1.0","type":"link"}