My Account
My Garage
Shopping Cart

Shopping Cart

0 items in your Cart
View Cart
Subtotal
Track
My Order
MY GARAGE Select Vehicle
MY GARAGE

Diamond Eye Manufacturing 361051 Performance Exhaust System 4in Aluminized Steel for 2001-2007.5 GM 6.6L Duramax

(2001-2007 Chevrolet Silverado 2500 HD; 2001-2007 Chevrolet Silverado 3500; 2002-2007 GMC Sierra 2500 HD; 2007 GMC Sierra 3500 HD SLE; 2002-2007 GMC Sierra 3500)

Manufacturer

Picture for manufacturer Diamond Eye Manufacturing

Part Number

361051
8 reviews
Sale Price

$146.20

Estimated ship date Tuesday, December 22

Check out with

ApplePay
Authorize Seller Badge
No Hassle Returns

No Hassle Returns

Live-in-stock inventory

Live-in-stock inventory

Fitment guaranteed

Fitment guaranteed

Product Details

The Diamond Eye Manufacturing 361051 is a performance exhaust system designed for 2001–2007.5 Chevrolet and GMC 2500/3500 pickup trucks equipped with the 6.6L Duramax diesel engine. Engineered to reduce exhaust backpressure and unlock the engine's full potential, this system delivers improved throttle response, increased horsepower and torque, and a deep, aggressive diesel exhaust tone.

Constructed from aluminized steel, this exhaust system is built to withstand the harsh underbody environment and high exhaust temperatures produced by turbocharged diesel engines. Diamond Eye uses CNC mandrel bending throughout the system, ensuring smooth, continuous bends that maintain full interior diameter and maximize flow — eliminating the crimped restrictions found in OEM-style crush-bent pipes.

Key Features:

  • Compatible with all cab and bed length configurations for 2001–2007.5 Chevy/GMC 2500/3500 Duramax
  • Mandrel-bent aluminized steel construction for durability and superior flow
  • Reduces exhaust backpressure to improve engine efficiency and power output
  • Bolt-on installation using existing mounting points — no cutting or welding required
  • Enhanced exhaust flow contributes to improved EGT (exhaust gas temperature) management
  • Includes all necessary hardware and clamps for installation
  • Designed and manufactured in the USA

Diamond Eye Manufacturing 361051 is an ideal upgrade for Duramax owners seeking a straightforward performance exhaust solution that balances power gains with long-term reliability. Whether towing heavy loads or daily driving, this system is engineered to perform under demanding conditions.

Products specifications

Fits

2001-2007 Chevrolet Silverado 2500 HD; 2001-2007 Chevrolet Silverado 3500; 2002-2007 GMC Sierra 2500 HD; 2007 GMC Sierra 3500 HD SLE; 2002-2007 GMC Sierra 3500

Notes

First section only. Designed for use with DEP exhaust systems only.

Outside Diameter (in)

4.000 in.

Quantity

Sold individually.

Tubing Finish

Natural

Tubing Gauge

16-gauge

Tubing Length (ft)

3.80 ft.

Tubing Material

Stainless steel

Material

409 Stainless Steel

Title

Diamond Eye Performance 2001-2007.5 CHEVY/GMC 6.6L DURAMAX 2500/3500 (ALL CAB AND BED LENGTHS)-PERFORMAN

Great prices. Fast shipping. Huge inventory.

Great product. Fast shipping. Great and easy to use website! The air filter I purchased <br>From them cost $20 less than it was priced for at other competitors! I am very happy with the price.

great chair for pool table area or any man cave

I needed two fairly expensive parts for a project. Naturally, I shopped everywhere before deciding on where to purchase them. Autoplicity had the best price on the carburetor. I continued shopping around for the alternator, and ended up right back at the Autoplicity website, because they beat everyone else on that price also! And I don't mean by a few dollars! HUGE savings! Thanks Autoplicity! In the words of Arnold, "I'll be back!"

Sitting at home, having a beer, ordering parts and saving money, can't beat that!!

Fast shipping and saved $60 on a $399 item. However you have to verify your part #'s with the vendor. The part discription on autoplicity sometimes is not what you get. I ordered an item that said it was an O2 plug and bung but when it showed up it was just the bung plug sold separate and customer service basically said it was my bad for not checking for a more accurate discription on the Allstar web site.

ordered a K&N air filter, pretty simple. good price, timely shipping.

In a rush to get my car up and running, Autoplicity had the best price on the items I needed, and in stock as well as shipped quickly. Just what I was looking for, thanks!

Share icon
Return Policy
Returns are easy at THMotorsports

Not happy with a purchase? No problem. We've made returning items as easy as possible. And most purchases can be returned for free for 30 days. Learn more about our Returns Policy