Mishimoto Downpipe | 2015+ Ford Mustang Ecoboost (MMDP-MUS4-15)

Rating: 5.0 out of 5.0 (1)
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Email - sales@maperformance.com

Phone 1-888-627-3736

Fits Your:
FREE Delivery Expected by , when ordered within hrs and mins
$612.95 $679.27Instant Savings of 10% ($66.32)

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The catalytic converter is manufactured using 304 grade automotive stainless steel. This particular grade of stainless has the tendency to form a protective layer of surface rust in wet/humid/snowy climates or when exposed to salted roads. This layer is superficial and will not penetrate the metal itself. It can be removed using soap and water and a steel Brillo or S.O.S pad. In the rare event that 304 stainless steel pipes become rusted through, the Mishimoto Lifetime Warranty will cover replacement.


  • Direct fit for the 2015+ Ford Mustang EcoBoost
  • Fits with both manual and automatic transmissions
  • Extremely aggressive turbo and exhaust tone under acceleration and boost
  • 304 stainless steel 2-piece design allows for uninterrupted exhaust flow and an easy installation
  • Includes stainless steel 2-bolt mounting flange to the turbo
  • 3" exhaust diameter for maximum flow
  • Additional wideband O2 sensor bung for aftermarket wideband sensors
  • Mates with the stock cat-back exhaust or any aftermarket exhaust with a 2.25" mid-pipe
  • High flow catalytic converter


  • 2015-2016 Ford Mustang Ecoboost

What's in the box?

  • 1 3.0" V-Band Clamp
  • 1 3.0" Slip Joint Clamp
  • 1 High-Flow Catalytic Converter
  • 1 Stainless Steel, 2-piece downpipe with floating 2-bolt flange, slip joint connector, and V-band flange
  • 1 3.0" to 2.25" exhaust adapter (for use with stock exhaust or most aftermarket cat-back exhaust with a 2.25" mid-pipe)


  • Mishimoto Lifetime Warranty

Customer Reviews

Based on 1 review
Darrell Shull

Looks good, welds and bends look great. Great quality. Really opened up my car and also more aggressive sound. My only complaint is this doesn’t bolt up to the MA catback exhaust. It’s about 4 inches to short. So because of that it goes from 3” to 2 1/4 then back to 3”.