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The Exergy improved-stock CP4.2 pump for 2011–2016 Chevrolet Duramax 6.6L LML applications is an upgraded CP4.2 unit based on the stock design. It’s offered as an improved replacement option for LML Duramax engines where a refreshed CP4.2 unit matching stock form and function is desired. Use this pump when servicing or updating the fuel delivery on compatible 6.6L LML Duramax trucks.
Exergy 11-16 Chevrolet Duramax 6.6L LML Improved Stock CP4.2 Pump
