The Wehrli WCF CP3 Conversion Kit converts 2011–2016 Chevrolet Silverado and GMC Sierra 2500/3500 HD LML 6.6L Duramax trucks from the factory CP4.2 to a CP3 arrangement to avoid frequent CP4.2 failures. The kit includes a billet CP3 pump mounting plate, pre-bent high-pressure lines, CNC fittings, fuel distribution block, harness, feed lines and hardware. Made in USA; pairs with a new Bosch CP3 (sold separately) for a no-tuning-required solution.
Wehrli 11-16 Chevrolet 6.6L LML Duramax CP3 Conversion Kit