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Exergy Fuel System Saver - Duramax LML

Thoroughbred Sku #: XRGE0510505
Manufacturer Sku #: E0510505

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(859) 737-4966

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(859) 737-4966
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Product Details

Product Name: Exergy Fuel System Saver - 2011-2016 Duramax LML
Manufacturer: Exergy
Manufacturer Part #: E0510505
Thoroughbred Diesel Part #: XRGE0510505
Fitment Notes: 2011-2016 GM Duramax LML

Are you concerned about the possibility your CP4.2 could fail and damage your injectors as well as contaminate the rest of your high pressure system? Our System Saver LML Inlet Metering valve (also called FCA and MPROP) offers an affordable option to help protect your high dollar fuel system components.

Starting with a new inlet metering valve from Bosch we replace the factory single layer 85 micron inlet screen that is molded in a plastic frame with one of our own design. The Exergy screen is mounted on a stainless steel frame that will not fail when the screen fills with debris and becomes a restriction. It also has two layers of 10 micron screen.  Not only is the screen over eight times finer than the factory screen, but the addition of another layer further increases protection from debris.

Based on a number of injector sets we have tested from systems with a failed CP4.2 pump with a System Saver installed it appears that injector survivability is increased more than 85% when compared to CP4.2 failures with the factory screen.

Should the pump actually fail we recommend replacing the pump, and not replacing the injectors unless there are injector related symptoms present after the install.

The System Saver Inlet Metering Valve is also a wise upgrade should the valve need to be replaced to address traditional metering valve failure modes such as idle surge and excessive rail pressure fluctuations.

This part can be used as a direct replacement for Bosch part number 0 928 400 779 and 0 928 400 757, GM part number 12641035, and ACDelco Part number 12641035.

Note: that a valve cannot be returned after it has been installed.

Exergy Fuel System Saver Features:

  • 2 layer, double-wrapped, the stainless screen
  • Improved design to capture debris up to 25 microns
  • Design will not tear or delaminate
  • Quality materials
  • For more information on Exergy call us at 1-859-737-4966

Reviews

4.3
Out of 5.0
A graph showing this site's review totals.
Overall Rating
85%
of customers that
buy this product give
it a 4 or 5-Star rating.
Verified Buyer
“Great buy”
March 23, 2025 by Nancy G. (Arkansas , United States)
“We needed this part to prevent catastrophic damage to our engine. Part was as described and was sent to us quickly.”
Verified Buyer
“Great buy”
helped my state of mind
November 29, 2024 by John O. (United States)
“i bought my 2013 duramax with 220000 mi. Possibly the injection pump had been replaced, but the EFSS was an ease on my mind.”
Verified Buyer
“Great buy”
November 15, 2024 by Chris C. (NC, United States)
“Love the ease of install and was very relieved to know that my fuel system if it should fail will save me around 10k a must have to save fuel system.”

Submit a question

  • Where is this located on the duramax engine, I bought one from your company but can’t find where it’s located to mount it?Pictures of location would be a big help, Thanks for your help.

    Billy McBride | 7/20/2023

    It is located on the Cp4 injection pump. Which is located in the valley of the engine.

  • Where does this install exactly?Thanks

    Billy | 7/6/2023

    It will replace the fuel control actuator on your CP4.

  • will this work with the airdog 2 4g 165??thanks

    Brad Dietrich | 8/3/2021

    Yes

  • Does this replace the CP4 or does it go along with it? My 2016 Duramax LML is at the dealer this very minute having the CP4 system replaced....Thank goodness GM is going to cover the cost $4,200....but they may not the next time....Thanks!!

    Juanita Fuller | 3/2/2021

    Works along with it.