Duramax LB7 Oil Pump 2001-2004 Melling M561

Melling engine oil pump for the Duramax LB7 (2001-2004). Listed for one application: Duramax LB7 engines, 2001-2004, in Chevrolet, GMC applications. Confirm your engine code and year against this listing before ordering.

What it does

The oil pump is the heart of the lubrication system: it pulls oil from the pan and forces it through the galleries to the crank and cam bearings, lifters and timing set. A worn pump loses pressure hot, which is how bearings and lifters die. A fresh pump restores full oil pressure at idle and under load.

Fits

• Chevrolet vehicles with the Duramax LB7 engine, 2001-2004
• GMC vehicles with the Duramax LB7 engine, 2001-2004

Fixes

• low or dropping hot oil pressure
• lifter tick or bearing noise
• an oil-pressure warning at idle
• a rebuild or timing-chain job where the pump is off anyway

What's included

• the oil pump assembly
• pickup tube O-ring / gasket where supplied by the manufacturer

Specifications

• Brand: Melling
• Part number: M561
• Shipping weight: 4.2 lb
• Condition: new
• Product type: Oil Pump

Cross-reference

Replaces or interchanges with Melling M561 for the Duramax LB7. 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.