At LowPricedAutoParts we proudly offer genuine Enginetech BC409J001 .001 Oversize main bearings (5-piece set) designed specifically for the 1999-2016 GM 4.8L 5.3L 6L 6.2L engines in Silverado 1500, Sierra 1500, Tahoe, Yukon and equivalent models after crankshaft grinding.
Manufactured to tight tolerances: shaft diameter 2.5588-2.5593", housing bore 2.7509-2.7515", wall thickness 0.0952-0.0957", width 0.805", oil clearance 0.0002-0.0018". These bearings perform reliably in daily driving, towing, and heavy service conditions typical of these popular vehicles.
Key benefits include:
Oversize design restores proper clearances on machined journals
Wide oil clearance range accommodates 4.8L 5.3L 6L 6.2L operation
Helps reduce friction and maintain engine efficiency
Whether addressing bearing wear, main knock, or performing preventative maintenance during timing chain, head gasket, or full engine service, these bearings help deliver quiet, dependable performance you can count on.
Always confirm crankshaft journal measurements (machined to match oversize) and VIN for exact match. Professional installation recommended to verify clearances and follow torque procedures correctly.
Shop confidently with LowPricedAutoPartsfast shipping, expert support, and our commitment to your satisfaction on every Enginetech part. Get your GM vehicle back to peak reliability today.
