King MB5293SI STD SI Main Bearing Set GM LS/Vortec Gen III IV 4.8 5.3 5.7 6.0L

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Product Specification:

SKU:KINGMB5293SI

MPN: MB5293SI

UPC: 611500412967

Weight: 1.1 lb

Inventory: 72

Type: Bearings

Vehicle Fitment

1997-2004 Chevrolet Corvette C5 (Base, Z06, RWD, 5.7L V8 LS1/LS6)
2005-2013 Chevrolet Corvette C6 (Base, Z06, RWD, 6.0L/7.0L V8 LS2/LS3/LS7)
1998-2002 Chevrolet Camaro (Base, Z28, SS, RWD, 5.7L V8 LS1)
2010-2015 Chevrolet Camaro SS (Base, 1LE, RWD, 6.2L V8 LS3/L99)
1998-2002 Pontiac Firebird / Trans Am (Base, Formula, WS6, RWD, 5.7L V8 LS1)
1999-2013 Chevrolet Silverado 1500 (WT, LS, LT, LTZ, RWD/4WD, 4.8L/5.3L/6.0L V8 LM7/LR4/LQ4/LQ9/LY5/LMG/LC9/L96)
2001-2019 Chevrolet Silverado 2500HD / 3500HD (WT, LS, LT, LTZ, High Country, RWD/4WD, 6.0L V8 LQ4/LQ9/L96)
1999-2013 GMC Sierra 1500 (WT, SLE, SLT, Denali, RWD/4WD, 4.8L/5.3L/6.0L V8)
2001-2019 GMC Sierra 2500HD / 3500HD (WT, SLE, SLT, Denali, RWD/4WD, 6.0L V8 LQ4/LQ9/L96)
2000-2014 Chevrolet Tahoe (LS, LT, LTZ, Z71, RWD/4WD, 4.8L/5.3L V8)
2000-2014 Chevrolet Suburban 1500 / 2500 (LS, LT, LTZ, RWD/4WD, 5.3L/6.0L V8)
2000-2013 GMC Yukon / Yukon XL 1500 / 2500 (SLE, SLT, Denali, RWD/4WD, 4.8L/5.3L/6.0L/6.2L V8)
2002-2013 Chevrolet Avalanche (LS, LT, LTZ, RWD/4WD, 5.3L/6.0L V8)
2002-2014 Cadillac Escalade / Escalade ESV / Escalade EXT (Base, Luxury, Premium, Platinum, AWD, 6.0L/6.2L V8 LQ9/L94)
2009-2015 Cadillac CTS-V (Base, RWD, 6.2L Supercharged V8 LSA)
2006-2009 Chevrolet Trailblazer SS (Base, RWD/AWD, 6.0L V8 LS2)
2009-2019 Chevrolet Express 2500 / 3500 (Base, LS, LT, RWD, 6.0L V8 L96)
2009-2019 GMC Savana 2500 / 3500 (Base, LS, LT, RWD, 6.0L V8 L96)
2016-2020 Chevrolet LCF 4500 (Base, RWD, 6.0L V8 L96)

Fitment Notes

Fits GM LS/Vortec Gen III and Gen IV V8 engines - 4.8L (LR4/L20), 5.3L (LM7/LY5/LMG/LC9/L96/L83/L84), 5.7L (LS1/LS6), 6.0L (LQ4/LQ9/L96/L76/L77), 6.2L (LS3/L9H/L94/LSA), and 7.0L (LS7) - confirm engine code before ordering
Standard (STD) size - for use on crankshafts at factory main journal diameter; always measure journals before ordering
SI Series = bi-metal aluminum silicon construction with 2.5-3% silicon; ideal OE-replacement grade for stock and mild performance street rebuilds
Does not fit the Gen V LT-series engines (LT1, LT4, L82, L84, L86, L87) - those require a separate main bearing set
Cadillac CTS-V LSA (supercharged) - confirmed fitment; verify crank diameter before ordering
Available in .001", .010", .020", .030", .040" undersizes under separate part numbers for ground crankshafts

Features

SI Series bi-metal aluminum silicon construction with 2.5-3% silicon for enhanced strength and wear resistance on nodular cast iron crankshafts
Improved crankshaft finish characteristics reduce microscopic ferrite peaks on reconditioned journal surfaces for better oil film stability
Enhanced oil clearance over OE specification reduces wear and extends crankshaft service life
Lead-free construction meets current environmental compliance standards
Full 5-pair set covers all main crankshaft journals in the V8 engine
Tight wall thickness tolerances ensure consistent oil clearance across all 5 main journals
Suitable for OE replacement, street rebuilds, and mild performance applications across all LS Gen III/IV variants
Manufactured under IATF 16949 and SAE AS 9100 certified quality control

Specifications

Part Number: MB5293SI
Size: Standard (STD)
Series: SI (Bi-Metal Aluminum Silicon - OE Replacement)
Engine: GM LS / Vortec Gen III & Gen IV V8 (4.8L / 5.3L / 5.7L / 6.0L / 6.2L / 7.0L)
Position: Crankshaft Main (Upper and Lower shells)
Quantity: 5 pairs (10 shells total - full V8 main bearing set)
Available Sizes: STD / .001" / .010" / .020" / .030" / .040"

Included Components

5x Upper Main Bearing Shells
5x Lower Main Bearing Shells

Product Description

The King MB5293SI is a standard-size crankshaft main bearing set engineered for GM's LS and Vortec Gen III and Gen IV V8 engine family - one of the most prolific engine platforms in automotive history, covering displacements from 4.8L through 7.0L across Corvette, Camaro, Silverado, Sierra, Tahoe, Suburban, Yukon, Avalanche, Escalade, CTS-V, Express, Savana, Trailblazer, and more from 1997 onward. The SI Series uses King's proven bi-metal aluminum silicon structure with 2.5-3% silicon content, delivering reliable OE-replacement durability for stock and mild performance street rebuilds on nodular cast iron crankshafts.

As a standard-size set, the MB5293SI fits LS Gen III/IV crankshafts at factory main journal diameter and installs without grinding or modification. It is the go-to OE-replacement choice for high-mileage rebuilds where the crankshaft is within factory specification. Always confirm your specific LS engine code and measure crankshaft journals before ordering - this set does not fit the Gen V LT-series engines. A wide range of undersizes are available under separate part numbers for reconditioned crankshafts.