Replace that restrictive factory downpipe with a MBRP direct replacement downpipe for more flow, fuel economy, and better performance. Removal of OEM catalytic converters may be a violation of emissions laws in your jurisdiction. Ensure that the intended use of this product is permitted. Not for sale or use in the state of California.
Features & Benefits
- Direct Replacement, Bolt-on Installation. Mandrel Bent Tubing for Improved Flow. Lower Exhaust Gas Temperatures.
- Jig Manufactured To Ensure Accuracy
- Lower Exhaust Gas Temperatures
- Gain Extra Power
Installation & Documents
Not legal for sale or use on pollution-controlled vehicles in California.
| Part Number | MBRPGM8425 |
|---|---|
| Manufacturer Part # | GM8425 |
| Brand | MBRP |
| Part Type | Downpipes |
| Boxes | 1 |
| Box Size | 24.5 x 8.3 x 6.2 in |
| Shipping Weight | 7.5 lb |
| California (CARB) | Not legal for sale in California |
| Prop 65 Warning | Yes |
| Ships By | Ground parcel |
| UPC | 882663111664 |
| Availability | In stock - ships in 1-2 business days |
| Years | Make | Model | Trim | Engine |
|---|---|---|---|---|
| 2001-2004 | Chevrolet | Silverado 2500 HD | Base | 6.6L |
| 2001-2004 | Chevrolet | Silverado 2500 HD | LS | 6.6L |
| 2001-2004 | Chevrolet | Silverado 2500 HD | LT | 6.6L |
| 2004 | Chevrolet | Silverado 2500 HD | WT | 6.6L |
| 2001-2004 | Chevrolet | Silverado 3500 | Base | 6.6L |
| 2001-2004 | Chevrolet | Silverado 3500 | LS | 6.6L |
| 2001-2004 | Chevrolet | Silverado 3500 | LT | 6.6L |
| 2004 | Chevrolet | Silverado 3500 | WT | 6.6L |
| 2002-2004 | GMC | Sierra 2500 HD | Base | 6.6L |
| 2001-2002 | GMC | Sierra 2500 HD | SL | 6.6L |
| 2001-2004 | GMC | Sierra 2500 HD | SLE | 6.6L |
| 2001-2004 | GMC | Sierra 2500 HD | SLT | 6.6L |
| 2003-2004 | GMC | Sierra 2500 HD | WT | 6.6L |
| 2002-2004 | GMC | Sierra 3500 | Base | 6.6L |
| 2001-2002 | GMC | Sierra 3500 | SL | 6.6L |
| 2001-2004 | GMC | Sierra 3500 | SLE | 6.6L |
| 2001-2004 | GMC | Sierra 3500 | SLT | 6.6L |
| 2004 | GMC | Sierra 3500 | WT | 6.6L |
Shipping
- Free shipping on orders of $100 or more in the lower 48 states.
- $14.99 flat on orders under $100.
- Parts that ship by truck freight: $175 flat, lower 48 states only.
- Outside the lower 48, shipping is charged by box size and destination. International buyers pay any import duties on delivery. We can't ship to APO/FPO addresses.
- In stock - ships in 1-2 business days
California
This part is not legal for sale or use on pollution-controlled vehicles in California, so it can't be shipped to a California address.
Returns
New, uninstalled parts in the original packaging can be returned within 30 days of delivery (30% restocking fee; you pay return shipping). Shipping & returns, explained.