{"product_id":"moly-piston-ring-set-56","title":"Sealed Power Moly Piston Ring Set 4.250 Bore — Performance 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\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\/Krq2NDfSZ-U\" 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\u003eHigh-Performance Moly Rings for 4.250 Bore Engines\u003c\/h2\u003e\u003cp\u003eThe Sealed Power Moly Piston Ring Set (E553K) is the ultimate choice for builders looking to maximize the efficiency and power of their 8-cylinder engines. Engineered for a 4.250-inch bore, these performance-grade rings feature a moly-filled design that excels in high-heat and high-stress environments. By providing a harder, more wear-resistant surface, these rings ensure that your engine maintains peak performance over a longer service life.\u003c\/p\u003e\u003ch3\u003eWhy Choose Sealed Power Moly Rings?\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Materials:\u003c\/strong\u003e Steel rings with moly facing for reduced friction.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBore Compatibility:\u003c\/strong\u003e Exact fit for 4.250-inch cylinder bores.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRing Thickness:\u003c\/strong\u003e 5\/64 x 5\/64 x 3\/16 inch for robust sealing.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003ePerformance Ready:\u003c\/strong\u003e Designed for drop-in installation.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStandard Tension:\u003c\/strong\u003e Optimized for consistent oil film management.\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eMoly-faced rings are widely recognized in the racing and performance community for their ability to seat quickly and provide a superior seal against combustion gases. This reduces oil consumption and blow-by, allowing your engine to run cleaner and stronger. Whether you are rebuilding a classic muscle car engine or upgrading a performance block, these rings offer the reliability and precision you need. The drop-in design means you spend less time filing and more time driving. Invest in the longevity of your engine with high-quality components that stand up to the rigors of high-performance use. Get your engine parts delivered fast 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 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 Moly Piston Ring Set 4.250 Bore \\u2014 Performance 8-Cylinder\",\"description\":\"Boost your engine efficiency with Sealed Power Moly Piston Rings. 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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 Moly Piston Ring Set 4.250 Bore \\u2014 Performance 8-Cylinder?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most plug-and-play LED upgrades take 15-30 minutes per side. 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