Wagler Competition

The Wagler STREETFIGHTER Duramax balanced short block delivers exceptional performance at an affordable price and is externally balanced for the OE...

Wagler Competition Products’ LB7-LLY Billet Duramax Water Pumps offer modern, all-billet technology while pushing the limits of standard high-perfo...

Fully balanced and ready-to-assemble rotating assemblies from Callies not only save you time and money but also provide the peace of mind that your...

Fully balanced and ready-to-assemble rotating assemblies from Callies not only save you time and money but also provide the peace of mind that your...

Built to handle more horsepower & improve the valvetrain in your Duramax, these Certified Forged Billet Steel Rocker Arms are of the highest qu...

Duramax Upgraded Rocker Shaft (Requires 2 per Engine)

The Wagler Competition C6679 CP3 Block Off Plate is for use on the 2001-2016 GM's with a 6.6L Duramax.

Machined in-house at Wagler Competition Products, these Billet Main Caps increase bottom-end strength, rigidity & can be used with or without t...

Wagler Competition Products proudly presents their updated standard-length HD Cummins connecting rods. These competitively priced connecting rods a...

Wagler Competition Products proudly presents their updated Longer HD Cummins connecting rods. These competitively priced connecting rods are forged...

Wagler Competition Products proudly presents their updated+1 HD Cummins connecting rods. These competitively priced connecting rods are forged in T...

Wagler Competition Products proudly presents their updated standard length 6.7L Powerstroke connecting rods. These competitively priced connecting ...

100% Made in the USA. Forged by Trenton Forging in Trenton, MI 48183. Forging made from 4340ACQ certified material. All drafting, design, programm...

Machined in-house at Wagler Competition Products, these Billet Main Caps increase bottom-end strength, rigidity & can be used with or without t...

WCP Duramax Street is a 1/2" thick one-piece Girdle designed to provide additional support to the bottom end of the Duramax Block by tying the main...

The Wagler C6658.1 Street Girdle is the perfect way to beef up your LML Duramax 2011-2016 truck. It comes with ARP Main Studs, Washers & Nuts, ...

Aftermarket Duramax Intake manifold that replaces the factory y-bridge all together Casted one piece intake with improved airflow and horsepower I...

Aftermarket Duramax Intake manifold that replaces the factory y-bridge all together Casted one piece intake with improved airflow and horsepower I...

Aftermarket Duramax Intake manifold that replaces the factory y-bridge all together Casted one-piece intake with improved airflow and horsepower I...

Aftermarket WCP Duramax T-4 Twisted Turbo Pedestal is designed to work with the WCP Duramax Street Intake. 

Aftermarket WCP Duramax T-4 Twisted Turbo Pedestal is designed to work with the WCP Duramax Street Intake. 

This Wagler mechanical belt tensioner replaces the stock spring-loaded tensioner and is engineered for higher RPM's.

Wagler Competition Products proudly presents their updated standard length 6.6 Duramax connecting rods. These competitively priced connecting rods ...

WCP Duramax connecting rods are the perfect solution for a hot street truck making over 2,000 HP. These competitively priced connecting rods are fo...