2011 Suburban 2500 - Replacement Exhaust Manifold (Driver's Side)

[6point5diesel]

Hello All,

I plan to replace my driver's side exhaust manifold. The bolt closest to the firewall is missing. Cylindre number 7.

I plan to replace it with a new GM Genuine manifold. New steel bolts (not stainless). And new gaskets (GM Genuine).

What is the difference between these two manifolds?

Is the higher priced part (with a larger part number) an updated/improved part?

I see that the cheaper part is made in China. I have no problem paying more for the better part (possibly made in the USA) but I can't find any information as to what the difference could be between both parts.

This is for my 2011 Chevrolet Suburban 2500 LS.
6.0L L96 engine.
About 52,000km ~ 32,000 miles


Thank you!

 

[Fless]

Title says 2500. Text says 1500. Which one?

 

[6point5diesel]

Sorry. It's a 2500. That was a typo. Will edit and fix that.

 

[Joseph Garcia]

I can't help you on the choice of available manifolds, other than to say that I generally buy GM OEM, if available, because then I know what I've purchased, rather than guessing on an unknown quality and fit. You definitely want the manifold to properly fit to your motor's block.

ALSO, I strongly recommend that you use ARP bolts to attach the manifold to the block. These bolts don't break, which is a common problem with other bolts.

 

[6point5diesel]

Good suggestion Joseph. I will use ARP bolts.
(Your Yukon Denali is gorgeous!)


Also. I posted on another forum. I got my answer.
"12686303 won't fit. Its for box delete pickup trucks ONLY. Option code ZW9. ZW9 trucks have a different exhaust Y pipe setup and the driver's manifold is designed to use a different seal for that Y pipe.

You want 12616285."

 

[Geotrash]

Hello All,

I plan to replace my driver's side exhaust manifold. The bolt closest to the firewall is missing. Cylindre number 7.

I plan to replace it with a new GM Genuine manifold. New steel bolts (not stainless). And new gaskets (GM Genuine).

What is the difference between these two manifolds?
View attachment 483785

Is the higher priced part (with a larger part number) an updated/improved part?

I see that the cheaper part is made in China. I have no problem paying more for the better part (possibly made in the USA) but I can't find any information as to what the difference could be between both parts.

This is for my 2011 Chevrolet Suburban 2500 LS.
6.0L L96 engine.
About 52,000km ~ 32,000 miles


Thank you!

Are you sure the manifold needs replacing? It's super common for them to pop bolts, but the manifold itself will generally last the life of the vehicle.