{"product_id":"main-bearing-set-189","title":"Sealed Power Main Bearing Set 0.030 Undersize — Fits Mopar RB-Series Engines","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\/aGkKhbk37N8\" 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\u003eMaximize Your Mopar RB-Series Engine's Potential with Sealed Power 0.030 Undersize Main Bearings\u003c\/h2\u003e\u003cp\u003eFor the legendary Mopar RB-Series engines, known for their formidable power and torque, every internal component must meet the highest standards. The \u003cstrong\u003eSealed Power Main Bearing Set (0.030 Undersize)\u003c\/strong\u003e is specifically engineered for RB-Series engines where the crankshaft journals have been precisely machined to a 0.030-inch undersize. This kit is a cornerstone for any serious engine build or restoration, providing unparalleled support and lubrication for the crankshaft. It ensures that your Mopar RB-Series operates with maximum efficiency, reduced friction, and exceptional longevity, even under the most demanding conditions.\u003c\/p\u003e\u003ch3\u003eUncompromising Quality for Mopar RB Performance\u003c\/h3\u003e\u003cp\u003eSealed Power stands as a leader in engine component manufacturing, and these main bearings for the Mopar RB-Series are a testament to their engineering prowess. Constructed from premium bimetallic materials, they offer an optimal balance of strength, conformability, and embeddability. The precise dimensional accuracy is critical for maintaining proper oil clearances, which directly impacts oil pressure stability and prevents premature wear. These bearings are designed to handle the immense stresses of high-performance RB-Series applications, providing a reliable interface for the crankshaft's rotation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdvanced Bimetallic Construction:\u003c\/strong\u003e Combines strength and resilience for superior performance and extended life.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExceptional Load-Carrying Capacity:\u003c\/strong\u003e Built to withstand the high forces and pressures of powerful RB-Series engines.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOptimized for Oil Film:\u003c\/strong\u003e Ensures a consistent and protective oil layer, minimizing metal-to-metal contact.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eExact RB-Series Fitment:\u003c\/strong\u003e Specifically designed for Mopar RB-Series engines requiring a 0.030\" undersize.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eThe Ultimate Choice for Mopar RB-Series Engine Builds\u003c\/h3\u003e\u003cp\u003eInvesting in high-quality main bearings like this Sealed Power set is crucial for the success and durability of your Mopar RB-Series engine. It provides the essential support and precision needed to unlock and sustain the full potential of your big-block Mopar. Trust in Sealed Power for components that deliver on performance and reliability, ensuring your RB-Series engine performs flawlessly. Explore our full range of Mopar RB-Series parts 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 Main Bearing Set 0.030 Undersize \\u2014 Fits Mopar RB-Series Engines\",\"description\":\"Power up your Mopar RB-Series with Sealed Power Main Bearing Set 0.030 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 Main Bearing Set 0.030 Undersize \\u2014 Fits Mopar RB-Series Engines?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Most plug-and-play LED upgrades take 15-30 minutes per side. 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