Duramax Catalytic Converter Shield

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

SCMomentum

TYF Newbie
Joined
May 2, 2022
Posts
20
Reaction score
3
Has anyone installed or found one worthy of installation? Thanks in advance.
 

UsualSuspect

Full Access Member
Joined
Feb 21, 2022
Posts
234
Reaction score
150
Location
SoCal
We have had a few taken off our trucks, but oddly only the RAM's and the F150's. So far the Sierra/Silverado haven't had any taken from them. We started out using the FSPE cat guards. The issue we had with those is they don't allow much air flow around them, basically you are putting the kitty in a box with a couple of vents. We had some overheat and trip the sensor when they were driven in the desert and the temps were 110 and higher. We have since gone to CatStrap, and while we have had some exhaust pipes cut, they were not able to get it out and take it. We still had to have the exhaust repaired. There are few others out there, but I haven't used any of them.
 

Jay P Wy

Member
Joined
Oct 15, 2023
Posts
53
Reaction score
41
Location
Natrona County WY
The 3.0l Duramax (LM2) has the DPF and SCR in the engine compartment which makes it harder to cut out. The Ram and Ford 3.0l diesels are under the truck like the 250/2500 and 350/3500 trucks. The LZ0 (only in the Silverado/Sierra) is slightly different than the LM2.
 

StephenPT

Full Access Member
Joined
Jan 16, 2022
Posts
1,097
Reaction score
1,070
Location
St. Helens, OR
The 3.0l Duramax (LM2) has the DPF and SCR in the engine compartment which makes it harder to cut out. The Ram and Ford 3.0l diesels are under the truck like the 250/2500 and 350/3500 trucks. The LZ0 (only in the Silverado/Sierra) is slightly different than the LM2.
Correct - the SCRF (GM's term for the combined SCR and DPF assembly) is located in the engine compartment. However there is still a catalytic converter on these rigs and it's down by the frame rail. Item 6 in the diagram below.

1701453105095.png
 

Forum statistics

Threads
131,990
Posts
1,860,497
Members
96,385
Latest member
BigBee44
Top