Product Description
DIAMOND EYE K5123S-RP is a 5.0" 409 stainless cat-back exhaust system for the 2006–2007 Chevy Silverado / GMC Sierra 2500/3500 6.6L LBZ Duramax. It routes to the passenger side, deletes the muffler for maximum flow, and includes a turbo direct pipe (TDP) to improve turbo spool and reduce backpressure.
FAQ: WILL THIS FIT MY TRUCK?
Yes—if you have a 2006 or 2007 6.6L LBZ Duramax (2500HD/3500HD, any cab/bed). This kit is engineered for that chassis and engine package. Always verify model year and engine (LBZ) before ordering.
FAQ: DOES THIS INCLUDE A MUFFLER?
No. The -RP in the part number denotes the replacement pipe (muffler delete). If you prefer a muffled version, see the K5123A (aluminized with muffler) or K4127S (4" stainless with muffler).
FAQ: WHAT MATERIAL IS USED?
This system is built from 409 stainless steel for corrosion resistance and durability under heat cycles.
Fitment Details
- Vehicle: 2006–2007 Chevrolet Silverado / GMC Sierra 2500HD & 3500HD
- Engine: 6.6L LBZ Duramax diesel
- Configuration: Single, passenger-side exit; all cab & bed lengths
- System Type: 5.0" cat-back with turbo direct pipe (TDP) included
Cross-Reference / Related Items
- K5123S-RP — this product (5" 409 SS, no muffler)
- K5123A — 5" aluminized with muffler
- K4122S-RP — 4" stainless, no muffler (’06–’07.5)
- K4127S — 4" stainless with muffler
Specifications
| Brand | Diamond Eye Performance |
|---|---|
| MPN | K5123S-RP |
| System Type | Cat-back; includes Turbo Direct Pipe (TDP) |
| Material | 409 Stainless Steel |
| Tubing Diameter | 5.0" |
| Exit | Single, passenger side |
| UPC | 841963121490 |
| GTIN | 0841963121490 (UPC-A) |
| Shipping Weight | ~66.3 lb |
| Shipping Method | Ground (oversize box) |
| Prop 65 | No listed warning for this item |
