Remove this item?

Remove from your cart?
1 / 3
Machined Tappets
Overview

Precision-machined replacement tappets for CP3 clearance issues. Each three-piece set is reduced approximately 0.5 mm to eliminate shaft interference and fits 2007.5-2025 6.7 Cummins and 2006-2010 Duramax LBZ/LMM pumps.

Product information

If you’ve encountered the rare CP3 clearance issue where the new shaft won’t rotate a full 360° due to manufacturing variances these pre-machined tappets are your quick and clean fix.

Each set has been precision-machined to reduce height by ~0.5mm, eliminating interference with the shaft. Just swap them in using our CP3 Tappet Tool (required for removal), and you’re back in business. No guesswork, no grinding.

What’s in the Box?

  • 3x Machined Tappets

Key Features:

  • Direct replacement for OEM tappets

  • Pre-machined to spec (–0.5mm height)

Fits:

  • 2007.5-2025 6.7 Cummins (not retro-fitted from CP4 pumps)

  • 2006-2010 Duramax LBZ/LMM

Exchange your stock tappets, install these, and you’re good to go. Fast, simple, and way easier than machining your own.

Verified customer reviews

0.0 / 5

0 verified reviews
Sign in to review

Customer reviews load as you reach this section.

Shop now, pay later

With Affirm, pay in 4 interest-free installments every 2 weeks or you can pay over time with monthly payments over 3, 6 or 12 months. Payment options are offered by Affirm, are subject to an eligibility check, and may not be available in all states. CA residents: Loans by Affirm Loan Services, LLC are made or arranged pursuant to a California Finance Lender license. Payment options through Affirm are provided by these lending partners: affirm.com/lenders.

https://affirm.com/lenders

With Klarna, you can spread the cost of your purchase into 4 interest-free payments or pay up to 30 days later with no interest or fees or choose from a range of financing options (6, 12, or 36 months). You must be over 18, a resident of the U.S., and have a valid payment card. Late fees may apply.

Click here to learn more about Klarna’s terms & condition for complete terms.

Monthly financing through Klarna issued by WebBank, member FDIC. Other CA residents loans made or arranged pursuant to a California Financing Law license.

With PayPal Pay in 4, you can spread the cost of your qualifying purchase into 4 interest-free payments. Available for purchases between $30 and $1,500. Interest-free and no late fees.