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Merchant Automotive Billet CP3 Pump Rear Bracket | 2001-2010

Merchant Automotive

$69.99
SKU:
10696
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On 2001-2010 Duramax trucks, the CP3 fuel injection pump assembly is made up of a few different components. The rear bracket on the CP3 pump was a weak point on this setup, as it was made from plastic that became brittle over time. This led to cracking of the bracket and failure of the pump.

Merchant Automotive has developed a solution for this problem with this billet CP3 fuel injection pump rear bracket. It is designed as a direct replacement for the original bracket (GM 97328578) with a factory like fit and finish, but is made from billet for a long term solution, so you never have to worry about a cracked bracket again. It fits 2001-2010 Chevy Silverado and GMC Sierra 2500HD and 3500HD trucks with the LB7, LLY, LBZ and LMM 6.6L Duramax diesel. It is engineered and built in house by Merchant Automotive in Holland, Michigan, as part of our focus on the Duramax and Allison platforms.

Features

  • Full billet construction
  • Direct replacement for GM 97328578 with a factory like fit and finish
  • Strengthens the fuel injection pump assembly
  • Fixes the commonly cracked stock bracket
  • Future proofs your CP3 setup
  • Great upgrade when replacing the CP3 pump or doing a CP3 conversion

What's Included

  • (1) Merchant Automotive billet CP3 fuel injection pump rear bracket

When to Replace

  • A cracked or broken factory plastic rear bracket
  • As preventative maintenance while servicing or replacing your CP3
  • When doing a CP3 conversion on a 2011-2016 LML Duramax

Before You Order

Installation Tips

  • Install new seals between the bracket, adapter and block whenever they are disturbed.
  • Keep the fuel system clean and capped while the pump is removed.
  • Prime the fuel system and check for leaks before driving.

Installation Resources

What Year Duramax Had CP4 Problems?

If you have been around the Duramax scene, you have most likely heard complaints about the CP4 fuel injection pump. The CP4 replaced the older CP3, but many owners are converting back to the CP3 with conversion kits. Duramax trucks from 2011-2016 had CP4 fuel injection pump issues. The CP3 pump was used on 2001-2010 Duramax engines, and on some 2003-2018 Cummins diesel engines. Many failing CP4s present problems around 100,000 miles, and a failure can contaminate the entire fuel system, which can mean replacing most of its components.

Duramax LML CP4 Pump Failure

The CP4 fuel injection pump in 2011-2016 Duramax trucks can suffer high pressure fuel pump issues due to lack of lubrication. The CP4 was designed to be more efficient than its predecessor, the CP3, but it proved to be less reliable. An LML CP4 pump failure can present itself as a hard start or no start condition and can set trouble codes such as P0087, P0088, P0191 or P128E. This can be confirmed by removing the CP4 pump and fuel pressure regulator and checking for cracks and metal debris on the fuel pressure regulator screen.

Related Parts

Frequently Asked Questions

Why does the factory bracket crack?
The factory rear bracket is plastic and becomes brittle over time, which can lead to cracking and pump failure.

What part number does this replace?
It is a replacement for GM part number 97328578.

Can I use this on a CP3 conversion?
Yes. This is a great piece to have when doing a CP3 conversion on a 2011-2016 LML Duramax.

Is the CP3 pump included?
No. This is the rear bracket only.

For warranty information, see our Warranty Policy.

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