{"product_id":"king-engine-bearings-gm-vortex-gen-iii-iv-ls-series-main-bearing-set","title":"King Engine Bearings GM Vortex \/ Gen III IV LS-Series Main Bearing Set","description":"\u003cp class=\"p1\"\u003e\u003cb\u003eSKU\u003c\/b\u003e: MB5876SI020\u003c\/p\u003e\n\u003ch4 class=\"p1\"\u003e\n\u003cb\u003eKing Engine Bearings GM Vortec\/Gen III IV LS-Series Main Bearing Set High-Performance Bi-Metal Solution\u003c\/b\u003e\u003cb\u003e\u003c\/b\u003e\n\u003c\/h4\u003e\n\u003cp class=\"p1\"\u003eElevate your engine rebuild with the King Engine Bearings MB5876SI020 Main Bearing Set, engineered for GM Vortec and LS-Series Gen III\/IV engines. This premium bearing set delivers unmatched reliability and performance for enthusiasts, racers, and professional builders seeking a dependable foundation for their high-power builds. Crafted with precision and backed by King’s 60+ years of bearing expertise, this set is the go-to choice for GM LS engines, ensuring durability and smooth operation under demanding conditions.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhy Choose King Main Bearings?\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eKing Engine Bearings stands out as a leader in bearing technology, with a focus on quality materials and innovative design. The MB5876SI020 set features a bi-metal aluminum-silicon alloy construction, ideal for medium-load engines and nodular cast iron crankshafts. King’s proprietary Bull’s Eye Tolerance™ technology ensures precise wall thickness and consistent fit, reducing wear and enhancing engine longevity. Whether you’re building a street machine, drag racer, or daily driver, these bearings provide the reliability and performance needed for your GM LS engine.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhat’s Included in the Purchase?\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eComplete Main Bearing Set\u003c\/b\u003e: 5 pairs of bi-metal main bearings, designed for GM Vortec\/LS-Series Gen III\/IV engines.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePart Number\u003c\/b\u003e: MB5876SI020 (.020” undersize for precise fitment on machined crankshafts).\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eMaterial\u003c\/b\u003e: Aluminum-based with 2.5-3% silicon for enhanced strength and wear resistance.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eWarranty\u003c\/b\u003e: Manufacturer’s warranty included.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePackaging\u003c\/b\u003e: Securely packed to ensure safe delivery.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eFitment Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eThe MB5876SI020 Main Bearing Set is designed for the following GM Vortec\/LS-Series Gen III\/IV engines:\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eEngines\u003c\/b\u003e: 4.8L, 5.3L, 5.7L, 6.0L, 6.2L (LS1, LS2, LS3, LQ4, LQ9, L92, L94, L76, L77, LY6, L96).\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eVehicle Compatibility\u003c\/b\u003e:\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2004-2005 Rainier (CXL, CXL Plus)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2009-2015 CTS V\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2002-2005, 2007-2016 Escalade (Base, Hybrid, Hybrid Platinum, Luxury, Platinum, Premium)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2007-2016 Escalade ESV (Base, Luxury, Platinum, Premium)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2007-2013 Escalade EXT (Base, Luxury, Premium)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2007-2013 Avalanche (Black Diamond LS, LT, LTZ, LS, LT)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2002-2006 Avalanche 1500 (Base, LS, LT)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1999-2013 Silverado 1500 (Base, Hybrid, LS, LT, LTZ, SS, WT, XFE)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2001-2014 Suburban 1500 (Base, LS, LT, LTZ)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2000-2014 Tahoe (Base, Hybrid, LS, LT, LTZ, PPV, SSV)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2002-2009 Trailblazer (EXT, SS)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1998-2002 Camaro (Z28, SS)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e1997-2013 Corvette (Base, Grand Sport, Z06, ZR1)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2006-2009 Impala SS\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2006-2007 Monte Carlo SS\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2007-2014 Sierra 1500 (Base, Denali, Hybrid, SLE, SLT, WT, XFE)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2001-2014 Yukon (Base, Denali, Hybrid, SLE, SLT)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2000-2014 Yukon XL 1500 (Base, Denali, SLE, SLT)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2002-2009 Envoy (Denali, SLE, SLT)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2003-2009 H2 (Base, Luxury, Adventure)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2008-2009 G8 (GT, GXP)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2004-2006 GTO\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e2005-2009 9-7X (Aero, 5.3i)\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBuick\u003c\/b\u003e:\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eCadillac\u003c\/b\u003e:\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eChevrolet\u003c\/b\u003e:\u003c\/li\u003e\n\u003cli class=\"li2\"\u003e\u003cspan class=\"s2\"\u003e\u003cb\u003eGMC\u003c\/b\u003e:\u003c\/span\u003e\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eHummer\u003c\/b\u003e:\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePontiac\u003c\/b\u003e:\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSaab\u003c\/b\u003e:\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eNote\u003c\/b\u003e: Always verify fitment with your specific engine and crankshaft specifications before purchase.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eTechnical Specifications\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eSize\u003c\/b\u003e: .020” undersize (for crankshafts machined to .020” undersize).\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eConstruction\u003c\/b\u003e: Bi-metal aluminum-silicon alloy, lead-free for OE replacement applications.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eDesign Features\u003c\/b\u003e:\u003c\/li\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eBull’s Eye Tolerance™\u003c\/b\u003e: Ensures minimal shell-to-shell thickness variation for a precise fit.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eU-Groove™\u003c\/b\u003e: 90° oil groove design maintains oil flow while increasing load capacity.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eElliptix™\u003c\/b\u003e: Oil slot\/oil hole hybrid improves oil ingress without compromising bearing surface.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eRadialock™\u003c\/b\u003e: Enhances crush height for better load distribution and oil film stability.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eApplications\u003c\/b\u003e: Suitable for stock rebuilds, performance builds, and medium-load racing applications.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003ePart Weight and Shipping Dimensions\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eWeight\u003c\/b\u003e: Approximately 1.2 lbs (based on similar King LS-Series bearing sets).\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping Box Dimensions\u003c\/b\u003e: 11.51” L x 4.29” W x 2.0” H.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eShipping\u003c\/b\u003e: Fast and reliable shipping with tracking information provided.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cb\u003eManufacturer Details\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eKing Engine Bearings, founded in 1960, is a global leader in high-quality engine bearings for automotive, racing, aviation, and marine applications. Their in-house design and manufacturing processes ensure every bearing meets strict quality standards. The MB5876SI020 set is part of King’s SI-Series, designed for GM LS engines with a focus on durability and precision.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eInstallation Notes\u003c\/b\u003e\u003c\/p\u003e\n\u003cul class=\"ul1\"\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003ePrecision Fit\u003c\/b\u003e: Bearings are stamped with size on the steel back. Verify size during installation to ensure proper fitment.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eNon-Adjustable\u003c\/b\u003e: King bearings are precision-finished and should not be resized or modified.\u003c\/li\u003e\n\u003cli class=\"li1\"\u003e\n\u003cspan class=\"s1\"\u003e\u003c\/span\u003e\u003cb\u003eProfessional Installation Recommended\u003c\/b\u003e: For best results, have bearings installed by a licensed mechanic familiar with GM LS engines.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eWhy MB5876SI020 Stands Out\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eUnlike other bearing options, the King MB5876SI020 set combines advanced bi-metal construction with race-proven technology tailored for GM LS engines. Its aluminum-silicon alloy offers excellent strength for medium-load applications, while features like Bull’s Eye Tolerance™ and U-Groove™ ensure consistent performance and oil flow. Trusted by racers and engine builders worldwide, including USP Motorsports for their 1400-hp VR6 Audi S4 builds, this bearing set delivers the reliability and precision needed for both stock and performance applications.\u003c\/p\u003e\n\u003cp class=\"p1\"\u003e\u003cb\u003eOrder Your King Main Bearing Set Today\u003c\/b\u003e\u003c\/p\u003e\n\u003cp class=\"p1\"\u003eBuild your GM LS engine with confidence using the King MB5876SI020 Main Bearing Set. With its precise fitment, high-quality materials, and proven performance, it’s the ideal choice for your Vortec or LS-Series Gen III\/IV engine.\u003c\/p\u003e","brand":"King Engine Bearings","offers":[{"title":"Default Title","offer_id":43566068793423,"sku":"KINGMB5876SI020","price":146.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1062\/7920\/files\/SKU_MB5877SI010_UPC_611500626807.png?v=1756999230","url":"https:\/\/www.blackopsautoworks.com\/products\/king-engine-bearings-gm-vortex-gen-iii-iv-ls-series-main-bearing-set","provider":"Black Ops Auto Works","version":"1.0","type":"link"}