Dorman 904-121 EGR cooler for the 2006-2011 Workhorse LF72 V8 6.6L and other vehicles cools hot exhaust gas before it is routed back to the intake. This Dorman EGR cooler is sold as a kit.
- Spiral tubes in place of a fin design that is prone to clogging
- Tubes optimized to cool exhaust gas efficiently
- Welded stainless steel construction
- Heat transfer testing, burst testing and vehicle try-on testing
Quick facts
- Part: Dorman 904-121 EGR cooler
- Fits: 2006-2011 Workhorse LF72 V8 6.6L and other vehicles
- Material: Stainless steel
- Condition: New
A clogged or leaking EGR cooler can show up as coolant loss, white exhaust smoke or an EGR-related warning light. Before you replace this cooler, rule out a stuck EGR valve and leaks at the coolant hoses, since problems there can look similar.
Fits
The 2006-2011 Workhorse LF72 V8 6.6L takes one cooler. This listing is for a wide range of Chevrolet, GMC and Workhorse models, such as the 2006-2007 Chevrolet C4500 Kodiak V8 6.6L and the 2006-2007 Chevrolet C5500 Kodiak V8 6.6L.
Specifications
Fit and size
- Quantity per vehicle: 1
- Overall length: 13.5 in
- Overall width: 3.16 in
- Overall height: 4.19 in
- Inlet inside diameter: 0.52 in
- Outlet inside diameter: 0.52 in
Build and materials
- Material: Stainless steel
- Design: Spiral tubes
- Condition: New
- CARB certified, Executive Order D740
- Country of origin: China
In the box
One EGR cooler, two hoses, four hose clamps and four gaskets, plus the O-rings and application-specific hardware needed for installation.
Interchange: 820.922507 · 4E-1001 · 800-97004
DEK4 · EGR507 · 6700011 · EGC103 · 97358507 · SK904121 · EG1201 · ECK4
This part cross-references / interchanges with the following part numbers:
820.922507, DEK4, EGR507, 6700011, 4E-1001, EGC103, 97358507, SK904121, 800-97004, EG1201, ECK4, 904121
Frequently Asked Questions
Is the Dorman 904-121 EGR cooler right for the 2006-2007 Chevrolet C4500 Kodiak V8 6.6L?
Yes, Dorman 904-121 is listed for the 2006-2007 Chevrolet C4500 Kodiak V8 6.6L, and that truck takes one. If your truck is not named here, look up your own year and model in the "Vehicles it fits" section.
Does the 904-121 EGR cooler kit come with hoses and gaskets?
Yes. The Dorman 904-121 kit includes two hoses, four hose clamps and four gaskets with the cooler, along with O-rings and application-specific hardware.
What are the inlet and outlet sizes on this EGR cooler?
Both the inlet and the outlet have a 0.52 in inside diameter. The stainless steel cooler measures 13.5 in long, 3.16 in wide and 4.19 in tall.
Why does this EGR cooler use spiral tubes?
The original cooler on certain vehicles has a fin design that is prone to clogging. The spiral tubes are optimized to cool exhaust gas efficiently and reduce clogging.
Is this EGR cooler CARB certified?
Yes. This EGR cooler is CARB certified under Executive Order D740.
