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...

Are you loosing rail pressure from a worn out CP4.2 pump? Are you in need of a factory replacement pump? From stock up to 550+HP our Improved Stock LML CP4.2 pumps are the best and most affordable solution for an upgraded pump that won't...

2011-2016 Sierra/Silverado 2500HD/3500HD Allison Firepunk F1 Transmission Package Features: Great For Mildly Modified Trucks Up To 750HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings...

Problem: The factory turbo oil feed used on 2001-2016 Duramax's is supplied off of the #4 cam journal bearing, which can be restrictive, or even result in an oil blockage if the bearing slips. Solution: Fleece Performance's remote oil feed line allows you to...

ACDelco GM Original Equipment Automatic Transmission Oil Pan Gasket. This original equipment gasket provides the performance, durability, and service life you expect from General Motors.Features: Automatic Transmission Pan Gasket AC-Delco/GM Original Equipment Sold Individually Applications: 2001-Present GM 6.6L Duramax Allison 1000/2000 Transmissions (128044000) Vehicle...

Simply stated, more is always better when it comes to transmission fluid. Higher volumes of fluid take longer to heat up allowing for more stable transmission temperatures which help to extend transmission life. >PPEs Heavy-Duty Deep Allison Transmission Pans hold an extra 4 quarts...

If you're running an aftermarket positive displacement lift pump like our PowerFlo on your Duramax our fuel primer bulb sealing kit will allow you to eliminate the leak prone primer bulb from your fuel system. The sealing cap includes a 1/8 inch NPT port...

Dress up your engine bay with our billet aluminum oil cap for the Chevy Duramax! Includes o-ring and cam-lock and is a direct replacement for your OEM cover. 2001-2016 Duramax Oil Cap Red? Vehicle Fitments Chevrolet Silverado 3500 2001 to 2006 Chevrolet Silverado 2500...

Control your torque converter from the palm of your hand with the AlliLocker from Fleece Performance Engineering. The AlliLockeris 100 percent code free and allows you to bypass the TCM to lock/unlock the torque converter on demand. Turn the bypass switch off, and the...

Transmission Filter for using our Deep Heavy Duty transmission oil pan.Features: Transmission Filter (12805700) GM Allison Transmission When Using PPE Deep Transmission Pan Sold Individually Applications: GM Allison 1000/2000/2400 series fit with PPE Heavy-Duty Deep Aluminum Transmission Pan Vehicle Fitments Chevrolet Silverado 2500 HD...

Upgraded 7/16 inch diameter pushrods for GM's Duramax 6.6L diesel engines. Produced from 4130 chrome molybdenum steel and heat treated to Rockwell Rc60 for outstanding strength and rigidity. These pushrods are designed to stand up to higher valve spring pressure, RPM, and cylinder pressure...

Replace your leaking transmission lines with our heavy duty, high flow, flexible transmission lines. Our kit is the most complete replacement transmission line kit available for your LML truck! With an increased diameter over stock and heavy duty hose wrap, these lines will increase...

FASS Fuel Systems Diesel System 2011-2014 GM Duramax LML 6.6L Titanium Signature Series 100GPH (TSC11100G) Part No: TSC11100G A FASS Fuel Systems can be a beneficial upgrade for your GM Duramax LML diesel engine, this is because your Duramax doesn't come with a factory...

Convert your LML's fuel system from a CP4 to a CP3. Improve your LML Duramax's reliability and fueling capability with a CP3 conversion. Since its introduction, the CP4 has proven to be less reliable and less capable than the CP3 used in previous Duramax...

Whether you're putting on an aftermarket turbo or deleting the EGR system on your LML, this coolant return plug will help you put the finishing touches on the job. The plug is made from high quality 6061 aluminum, anodized black, and laser etched with...

2011-2016 Sierra/Silverado 2500HD/3500HD Allison Firepunk F3 Transmission Package Features: Great For Highly Modified Trucks Up To 1000HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings...

2011-2016 Sierra/Silverado 2500HD/3500HD Allison Firepunk F2 Transmission Package Features: Great For Mildly Modified Trucks Up To 900HP 2-Year Unlimited Mileage, 100% Workmanship Warranty Build List: All New Gaskets & Seals Allison Internal Filter Firepunk Filter Lock Allison External Filter with Magnet New Allison Bearings...