{"product_id":"king-rod-main-bearing-set-for-gm-ls-v8-4-8l-5-3l-6-0l-standard-size-mains-rods","title":"KING Rod \u0026 Main Bearing Set for GM LS V8 4.8L\/5.3L\/6.0L – Standard-Size Mains \u0026 Rods","description":"\u003cp\u003e\u003cstrong\u003eKING rod and main bearing set MB5293SI \u0026amp; CR807SI provides standard-size replacement bearings engineered for GM LS-series V8 engines including 4.8L, 5.3L and 6.0L displacements.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003cp\u003eIf you're rebuilding or refreshing an LS-series small-block V8, the right bearing set is essential for long-term crankshaft support and smooth rotating assembly operation. This KING kit ships with standard-size main and rod bearings compatible with a broad range of Chevrolet Vortec and LS engines—refer to your block measurements before installation. If you need an oversized option, or if KING stock is unavailable, the listing provides substitution options and a way to confirm availability before purchase.\u003c\/p\u003e\n\n\u003ch3\u003eWhich engines and model years will these bearings fit?\u003c\/h3\u003e\n\u003cp\u003eThis set fits many Chevrolet LS-family and Vortec V8s across several year ranges. It covers the 4.8L (293\/294 CID), 5.3L (325 CID and later Vortec\/LS4 variants), 5.7L LS1\/LS6 family, and multiple 6.0L\/6.2L applications including LS2, LS3 and LS9 where standard-size bearings are specified.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e4.8L (293\/294 CID): 1999–2013 Vortec platforms\u003c\/li\u003e\n  \u003cli\u003e5.3L (325 CID): 1999 \u0026amp; newer Vortec and LS4-compatible blocks\u003c\/li\u003e\n  \u003cli\u003e5.7L (346 CID): 1997–2005 LS1 \u0026amp; LS6 engines\u003c\/li\u003e\n  \u003cli\u003e6.0L\/6.2L (364\/365\/376 CID): 1999 \u0026amp; newer Vortec, plus LS2, LS3 and LS9 applications where STD bearings are used\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhat size bearings are included and what if I need oversize bearings?\u003c\/h3\u003e\n\u003cp\u003eThe kit contains standard-size main and rod bearings (MB5293SI STD \u0026amp; CR807SI STD). If your crankshaft journals have been machined or show wear, an oversize kit may be required. Contact the seller before ordering if you know you need an undersize\/oversize replacement.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eStandard-size mains and rods included out of the box\u003c\/li\u003e\n  \u003cli\u003eRequest oversize bearings via message if regrinding was performed\u003c\/li\u003e\n  \u003cli\u003eVerify journal diameters with micrometer\/hone readings before installation\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eAre there substitute brands if KING is unavailable?\u003c\/h3\u003e\n\u003cp\u003eIf KING inventory is temporarily exhausted we will offer equivalent A-series bearings from Clevite or ACL as a direct substitute. These alternatives meet common OE-style specifications for fatigue strength and overlay composition, but always double-check fitment.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eSubstitutes: Clevite A Series or ACL A Series when KING stock is out\u003c\/li\u003e\n  \u003cli\u003eMessage seller to confirm current brand availability before purchase\u003c\/li\u003e\n  \u003cli\u003eSubstitute kits provided to avoid project delays when KING is backordered\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHow should I verify compatibility before installing these bearings?\u003c\/h3\u003e\n\u003cp\u003eMeasure your crank journals and compare to factory specs to ensure standard-size bearings are correct. Inspect block clearances and consult your engine build sheet—if you’re unsure, ask for guidance from the seller or a machine shop.\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eUse a micrometer to measure crank journal diameters\u003c\/li\u003e\n  \u003cli\u003eCheck factory service manual for bearing clearance specs\u003c\/li\u003e\n  \u003cli\u003eIf journals were ground, order oversize kits instead of STD\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eWho is this for: This KING MB5293SI \u0026amp; CR807SI standard bearing set is aimed at mechanics, home engine builders and restoration shops working on Chevrolet LS-series and Vortec V8s that require standard-size main and rod bearings. It’s suitable for routine rebuilds, engine swaps that keep stock crank dimensions, and anyone wanting a dependable aftermarket bearing option—if you need different clearances or an oversized set, confirm measurements and message the seller before ordering.\u003c\/p\u003e\n\n\u003cul\u003e\n  \u003cli\u003eNote: Standard Size Bearings will be sent.\u003c\/li\u003e\n  \u003cli\u003eIf you require oversizes, send a message immediately.\u003c\/li\u003e\n  \u003cli\u003eIf King is out of stock, we will substitute Clevite A Series or ACL Brand A Series.\u003c\/li\u003e\n  \u003cli\u003eSend a message to check current stock of King.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003csection class=\"product-faq-snippet\"\u003e\u003ch3\u003eFAQ\u003c\/h3\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Are these bearings standard size or oversized?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: This kit ships with standard-size main and rod bearings; message the seller immediately if you need oversize bearings.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"faq-item\"\u003e\n\u003cp class=\"faq-q\"\u003eQ: Can you substitute another brand if KING is out of stock?\u003c\/p\u003e\n\u003cp class=\"faq-a\"\u003eA: Yes — Clevite A Series or ACL A Series may be supplied as equivalent substitutes when KING inventory is unavailable.\u003c\/p\u003e\n\u003c\/div\u003e\u003c\/section\u003e","brand":"KING","offers":[{"title":"Default Title","offer_id":48080263512222,"sku":"B01A9GHW50","price":133.98,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0781\/2041\/9486\/files\/king-main-rod-bearing-set-packaging-front.jpg?v=1785780251","url":"https:\/\/northtrailauto.ca\/products\/king-rod-main-bearing-set-for-gm-ls-v8-4-8l-5-3l-6-0l-standard-size-mains-rods","provider":"North Trail Auto","version":"1.0","type":"link"}