{"product_id":"sealed-powerpiston-ring-set-4-375-1-16-1-16-3-16","title":"Sealed Power R191055 Hellfire Piston Ring Set 4.375\" Bore — 8-Cylinder","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\u003eMaximize Engine Efficiency with Sealed Power Hellfire Piston Rings\u003c\/h2\u003e\u003cp\u003eElevate your engine's performance with the Sealed Power R191055 Hellfire Piston Ring Set, meticulously designed for 8-cylinder engines featuring a 4.375-inch bore. These premium piston rings are engineered to deliver superior cylinder sealing, which is critical for optimizing compression and minimizing power-robbing blow-by. The Hellfire series is a top choice for high-performance builds, offering the durability and precision required for extreme operating conditions.\u003c\/p\u003e\u003ch3\u003eEngineered for Demanding Performance\u003c\/h3\u003e\u003cp\u003eThis Sealed Power piston ring set boasts a file-fit design, providing the flexibility to customize ring end gaps for your specific engine's needs, ensuring maximum sealing and longevity. Constructed from high-strength ductile iron, these rings offer exceptional resistance to wear and fatigue, making them ideal for both street and track applications. The precise 1\/16 x 1\/16 x 3\/16 inch thickness profile, coupled with standard tension, strikes an optimal balance between effective sealing and reduced internal friction, contributing to increased horsepower and torque output.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cb\u003eBore Diameter:\u003c\/b\u003e 4.375 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRing Thickness:\u003c\/b\u003e 1\/16 x 1\/16 x 3\/16 inches\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eRing Type:\u003c\/b\u003e Hellfire® File Fit\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eMaterial:\u003c\/b\u003e Ductile Iron\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eTension:\u003c\/b\u003e Standard\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eCylinder Count:\u003c\/b\u003e 8-Cylinder Applications\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eFinish:\u003c\/b\u003e Natural\u003c\/li\u003e\n\u003cli\u003e\n\u003cb\u003eQuantity:\u003c\/b\u003e Complete Kit for 8 Cylinders\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eWhy Choose Sealed Power for Your Engine?\u003c\/h3\u003e\u003cp\u003eSealed Power is a globally recognized leader in engine components, celebrated for its unwavering commitment to quality and innovation. The Hellfire series piston rings exemplify their engineering prowess, combining advanced materials and cutting-edge design for unparalleled engine performance and reliability. Trust Sealed Power for your next engine project and experience the difference. Explore the extensive selection of Sealed Power products available at GGCRACING.COM.\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 R191055 Hellfire Piston Ring Set 4.375\\\" Bore \\u2014 8-Cylinder\",\"description\":\"Boost engine power with Sealed Power R191055 Hellfire Piston Ring Set for 4.375\\\" bore 8-cylinder engines. File fit, ductile iron, 1\/16 x 1\/16 x 3\/16. Shop GGCRACING!\",\"brand\":{\"@type\":\"Brand\",\"name\":\"Sealed Power\"},\"mpn\":\"R191055\",\"url\":\"https:\/\/ggcracing.com\/products\/sealed-powerpiston-ring-set-4-375-1-16-1-16-3-16\",\"offers\":{\"@type\":\"Offer\",\"price\":\"275.99\",\"priceCurrency\":\"USD\",\"availability\":\"https:\/\/schema.org\/InStock\",\"url\":\"https:\/\/ggcracing.com\/products\/sealed-powerpiston-ring-set-4-375-1-16-1-16-3-16\",\"sku\":\"BDBR_R191055\"}}\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\":\"Lighting\",\"item\":\"https:\/\/ggcracing.com\/collections\/lighting\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Sealed Power\",\"item\":\"https:\/\/ggcracing.com\/collections\/vendors?q=Sealed+Power\"},{\"@type\":\"ListItem\",\"position\":4,\"name\":\"Sealed Power R191055 Hellfire Piston Ring Set 4.375\\\" Bore \\u2014 8-Cylinder\",\"item\":\"https:\/\/ggcracing.com\/products\/sealed-powerpiston-ring-set-4-375-1-16-1-16-3-16\"}]}\u003c\/script\u003e\n\u003cscript type=\"application\/ld+json\"\u003e{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[{\"@type\":\"Question\",\"name\":\"Does the Sealed Power R191055 Hellfire Piston Ring Set 4.375\\\" Bore \\u2014 8-Cylinder 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 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 R191055 Hellfire Piston Ring Set 4.375\\\" Bore \\u2014 8-Cylinder?\",\"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":41068399689812,"sku":"BDBR_R191055","price":275.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0552\/3210\/2484\/files\/SEAR19105-5.jpg?v=1716770841","url":"https:\/\/ggcracing.com\/products\/sealed-powerpiston-ring-set-4-375-1-16-1-16-3-16","provider":"GGCRACING INC","version":"1.0","type":"link"}