Exhaust› Exhaust Pipes, Systems and Components
MBRP
MBRP 11-15 Chev/GMC 6.6L Duramax 3in Black Turbo Down Pipe
SKU: M006 GMCA427
Moderate — 2–4 hours
Description
Part #: GMCA427
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:
- Bolt-on Installation, Retains All Factory Mounting Points.
Armor Lite Turbocharger Down Pipe | 3 in. Diameter | 4.5 in. Outlet Diameter Tip
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | MBRP |
| Part Number | M006 GMCA427 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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