Chevrolet Duramax Fuel Pump - Industrial Injection - High Pressure CP4 - 11-16. A new stock replacement CP4 built for the 2011-2016 6.6L Duramax LML, this pump restores precise, high-pressure fuel delivery for dependable common-rail operation.

Manufactured by Industrial Injection, this pump is a direct-fit solution when refreshing a worn or failed factory unit. It helps maintain consistent rail pressure, smooth idle, and reliable starts on stock applications. Each unit is new (not remanufactured) and intended as a like-for-like replacement for the original LML high-pressure pump. Professional installation is recommended; confirm compatibility for your vehicle and follow proper cleanliness and priming procedures during install.

Features

• Application: 2011-2016 Chevrolet/GMC 6.6L Duramax LML
• Type: New stock high-pressure CP4 pump
• Direct-fit replacement for the factory unit
• Supports proper rail pressure and injector function
• Built by Industrial Injection for quality and reliability

Questions or need guidance on your build? Call our Austin shop at 512-982-9393 or our Los Angeles area location at 562-981-6800. We offer installation and customization services at both locations: Austin, Texas and the Los Angeles, California area.

If you are considering multiple items, please contact us for potential shipping discounts. We install on premises at both locations.

CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov