LB7 Duramax DF-100-4G Fuel Lift Pump 2001-2004 - AirDog

Overview

This is a fuel lift / transfer pump for the Chevrolet, GMC LB7 Duramax diesel (2001-2004). Engineered as a direct-fit replacement for a professional-grade LB7 Duramax repair or service. Every order ships fast and is backed by our support team.

What It Does & How It Helps

The lift pump moves fuel from the tank to the injection pump, and its real job is to keep the high-pressure pump supplied and lubricated. Starve a VP44, a P7100 or a CP3 of inlet fuel and you do not merely lose power — you shorten the life of the most expensive part on the engine, which is why a failing lift pump so often takes the injection pump with it. Falling supply pressure shows up as hard starting, a stumble or surge under load, a miss at highway speed and power that fades as the tank empties. A fresh pump of the correct pressure and flow rating restores steady inlet supply and protects the injection system.

What's Included

• a fuel lift or transfer pump matched to the engine as specified
• the mounting gasket, seals and fittings where the pump includes them

Fitment

Fits Chevrolet, GMC trucks equipped with the LB7 Duramax diesel engine, 2001-2004. Please confirm your engine and year before ordering to ensure correct fitment.

Common Symptoms & When to Use

Consider this LB7 Duramax part when you experience:

• hard starting, long cranking or a no-start
• surging, stumbling or power loss under load
• low fuel supply pressure to the injection pump
• protecting a VP44, P7100 or CP3 injection pump

Specifications

• Engine: LB7 Duramax
• Year Range: 2001-2004

Quality & Service

Fast shipping on in-stock orders. Free shipping on orders over $70. Backed by Core Diesel Parts — your source for LB7 Duramax diesel parts.