Duramax LLY / LBZ Main Bearings 2004-2007 DNJ MB3220.20

DNJ main bearing set for the Duramax LLY / LBZ (2004-2007). Listed for one application: Duramax LLY / LBZ engines, 2004-2007, in Chevrolet, GMC applications. Confirm your engine code and year against this listing before ordering.

What it does

Main bearings carry the crankshaft in the block. Low oil pressure, debris or detonation wipe them, and a spun main is an engine-out event. A new set at the correct size (standard or undersize) is part of every rebuild.

Fits

• Chevrolet vehicles with the Duramax LLY / LBZ engine, 2004-2007
• GMC vehicles with the Duramax LLY / LBZ engine, 2004-2007

Fixes

• a deep knock that follows engine load
• low hot oil pressure with a worn pump ruled out
• any crank-out rebuild

What's included

• a full main bearing set with thrust bearing at the stated size

Specifications

• Brand: DNJ
• Part number: MB3220.20
• Shipping weight: 1.5 lb
• Package size: 7.0 x 4.0 x 2.0 in
• Condition: new
• Product type: Main Bearings

Cross-reference

Replaces or interchanges with DNJ MB3220.20 for the Duramax LLY / LBZ. Check the part number stamped on your original before ordering.

Free shipping on orders of $70 or more; everything else ships with calculated shipping at the part's real weight. Questions on fitment? Ask a tech before you buy.