Product Description
DIAMOND EYE K5123A is a 5" aluminized-steel cat-back exhaust for 2006–2007 Chevy Silverado / GMC Sierra 2500/3500 6.6L LBZ Duramax (all cab & bed lengths). It delivers lower EGTs, freer flow, and a deep, refined tone while maintaining durability for daily use, towing, and work trucks.
This kit is a single, passenger-side exit with a performance muffler. Diamond Eye includes a Turbo Direct Pipe #321056 in the box to optimize flow from the turbo outlet into the system for a straightforward, bolt-on install.
FAQ: WILL THIS FIT MY TRUCK?
Yes—if you have a 2006–2007 (LBZ) 6.6L Duramax in a Silverado/Sierra 2500 or 3500, this system is designed to fit all cab and bed lengths. Minor trimming may be required depending on wheelbase.
FAQ: WHAT MATERIAL IS IT?
Aluminized steel tubing (5" diameter) with a performance muffler for corrosion resistance and value. For stainless steel, see the K5123S variant.
FAQ: DOES IT INCLUDE THE TURBO PIPE?
Yes. The kit includes a Turbo Direct Pipe (321056) and all required clamps/hardware for installation.
Fitment Details
- Make/Model: Chevrolet Silverado 2500/3500; GMC Sierra 2500/3500
- Engine: 6.6L Duramax LBZ
- Years: 2006–2007
- Configuration: Cat-back, single side exit (passenger side), includes Turbo Direct Pipe #321056
- Cab/Bed: All cab and bed lengths (see instructions for wheelbase notes)
Cross-Reference Items
- K5123S — Stainless steel version (single, passenger-side, with muffler)
- 321056 — Diamond Eye Turbo Direct Pipe (included in this K5123A kit)
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K5123A |
| System Type | Cat-back, single side exit with muffler |
| Tubing Diameter | 5.0" |
| Material | Aluminized steel |
| Included Components | Turbo Direct Pipe (#321056), clamps & hardware |
| UPC | 841963121469 |
| GTIN | 0841963121469 (UPC-A) |
| Shipping Weight | ~76–82 lb (varies by carrier) |
| Package Dimensions | 52" x 21" x 13" |
| Prop 65 | WARNING: Cancer and Reproductive Harm — www.P65Warnings.ca.gov |
