MBRP Turbo Downpipe - Chevrolet / GMC 2004-2010 | GBP Performance
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MBRP

MBRP | Turbo Downpipe - Chevrolet / GMC 2004-2010

GM8424
MBRP GM8424 – Direct replacement Turbo Downpipe aluminized steel ceramic-coated for Chevrolet Silverado / GMC Sierra HD 2500/3500 V8 6.6L Duramax. 3-year warranty.
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MBRP – Turbo Downpipe

Description

The MBRP GM8424 is a direct replacement Turbo Downpipe designed for Chevrolet Silverado and GMC Sierra HD 2500/3500 trucks equipped with the V8 6.6L Turbo Diesel Duramax engine (LLY, LBZ, or LMM). This component replaces the restrictive factory OEM downpipe, which is often overlooked during performance upgrades. The MBRP GM8424 mounts between the factory turbo and the existing exhaust system. It features full 16-gauge mandrel bent aluminized steel tubing for maximum exhaust flow, along with an extremely durable high-temperature ceramic coating. The ceramic coating protects the component and deepens the sound of the V8 diesel engine. This downpipe helps lower exhaust gas temperatures (EGTs), improves fuel economy, and provides quicker throttle response. Diameter is 3 inches. Compatible with Silverado 2500 HD, 3500 HD, Sierra 2500 HD, and 3500 HD models (see Application Section). Backed by a limited 3-year warranty.

Specifications

  • Brand: MBRP
  • Part Number: GM8424
  • Compatibility: Chevrolet Silverado / GMC Sierra HD 2500/3500 V8 6.6L Turbo Diesel Duramax (See Application Section)
  • Product Type: Turbo Downpipe (direct replacement)
  • Material: 16-gauge aluminized steel
  • Coating: High-temperature ceramic
  • Diameter: 3 inches
  • Tubing: Mandrel bent
  • Installation: Direct bolt-on installation between turbo and existing exhaust
  • Benefits: Increased flow, lower EGTs, improved fuel economy, quicker throttle response
  • Warranty: Limited 3-year
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  • Sold and shipped by GBP Performance

 

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Compatibility (Application)

MakeModelYearsEngineNotes
ChevroletSilverado 2500 HD2005–2010V8 6.0LNote 1
ChevroletSilverado 2500 HD2005–2010V8 6.6L Turbo DieselNote 1
ChevroletSilverado 2500 HD Base / LS / LT / WT2004V8 6.6L Turbo DieselNote 2
ChevroletSilverado 2500 HD2005–2006V8 8.1LNote 1
ChevroletSilverado 2500 HD Classic2007V8 6.0L / V8 6.6L Turbo Diesel / V8 8.1LNote 1
ChevroletSilverado 3500 HD2007–2009V8 6.0L / V8 6.6L Turbo DieselNote 1
ChevroletSilverado 3500 HD LT / LTZ2010V8 6.6L Turbo DieselNote 1
GMCSierra 2500 HD2005–2010V8 6.0L / V8 6.6L Turbo DieselNote 1
GMCSierra 2500 HD2004V8 6.0L / V8 6.6L Turbo Diesel / V8 8.1LNote 2
GMCSierra 2500 HD2005–2006V8 8.1LNote 1
GMCSierra 2500 HD Classic2007V8 6.0L / V8 6.6L Turbo Diesel / V8 8.1LNote 1
GMCSierra 3500 HD2007–2010V8 6.0L / V8 6.6L Turbo DieselNote 1
Note 1: Not to be sold in California; Fits mid to late 2004 models
Note 2: Not to be sold in California; Fits 2004 models made on or after 7/1/2004
MBRP
GM8424

Data sheet

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