SKU: 91401067974

Pacemaker 3" Cat-Back Performance Exhaust System for Ford Mustang GT S550 Convertible 5.0L V8 2015–2017 - PP4178-52

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Description

Pacemaker 3" Cat-Back Performance Exhaust System for Ford Mustang GT S550 Convertible 5.0L V8 2015–2017 - PP4178-52Pacemaker Heavy Duty 3" Performance Cat Back Exhaust System for Ford Mustang GT Convertible (5. 0L Coyote V8) PP4178 52 Unleash a deep, aggressive American muscle growl and unlock massive flow capacity from your high revving quad cam engine with the Pacemaker Sport Systems heavy duty large bore 3" performance cat back exhaust solution. Specifically engineered to maximize scavenging efficiency and satisfy the high velocity gas volume demands of the

Pacemaker Heavy-Duty 3" Performance Cat-Back Exhaust System for Ford Mustang GT Convertible (5.0L Coyote V8) - PP4178-52

Unleash a deep, aggressive American muscle growl and unlock massive flow capacity from your high-revving quad-cam engine with the Pacemaker Sport Systems heavy-duty large-bore 3" performance cat-back exhaust solution. Specifically engineered to maximize scavenging efficiency and satisfy the high-velocity gas volume demands of the iconic 5.0L Coyote V8, this premium system is precision-molded to clear the specific underbody bracing lines and structural layouts unique to the S550 soft-top architecture. By replacing your stock, restrictive factory plumbing with a high-volume mandrel-bent performance construction downstream of the catalytic converters, it optimizes gas velocity to clear spent exhaust out rapidly and completely eliminate power-robbing backpressure under acceleration. As Australia’s premium exhaust innovator, Pacemaker pairs this high-flow path with patented V-Tex technology and signature double-skinned mufflers to deliver a raw, thumping muscle car sound outside while actively engineering out harsh, intrusive interior cabin boom or open-air highway drone typical of convertible cabins. Note: Fits Ford Mustang GT S550 Convertible models (2015–2017) equipped with the 5.0L Coyote V8 engine configuration; engineered with optimized global clearance metrics to suit both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) configurations.

Features:

Precision-manufactured in Australia to deliver a premium flow upgrade, exceptional structural durability under high heat, and a refined performance acoustic profile for the global Mustang GT platform.

  • True 3" Cat-Back Section: Complete high-volume performance intermediate plumbing and rear muffler layout engineered to bolt up securely behind your factory or high-flow catalytic converters.
  • Convertible-Specific Clearances: Custom engineered to route flawlessly around the additional under-car chassis strengthening cross-bracing unique to the soft-top convertible floor pan.
  • Dual Drive Layout Compatible: Precision-cleared underbody routing architecture engineered explicitly to accommodate both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) chassis variations.
  • Premium Materials: Constructed completely from durable, heavy-gauge Exhaust Grade 409 Stainless Steel to ensure superior structural longevity under intense thermal stress.
  • Mandrel Bent Tubing: Rigid large-bore 3" (76.2mm) pipe structure guarantees a smooth, uniform internal diameter through all bends to optimize exhaust gas velocity and prevent restriction.
  • V-Tex Technology: Advanced internal anti-drone configuration filters out harsh, low-frequency cabin resonance typical of open convertible cabins without creating any power-robbing flow restrictions.
  • Signature Mufflers: Heavy-duty double-skinned 409 Stainless Steel mufflers offer premium outer case protection, zero internal packing blowout under high thermal stress, and precise tonal control.
  • Direct Bolt-On Layout: Engineered as a comprehensive, vehicle-specific full bolt-up kit that mounts directly onto existing factory rubber hanger positions—no custom fabrication required.
Product Specifications for PP4178-52
Brand Pacemaker Sport Systems Part # / SKU PP4178-52
Product Type Performance Cat-Back Exhaust System Piping Size 3" (76.2mm) Mandrel-Bent System
Material 409 Grade Stainless Steel Steering Drive Compatibility Suits Both LH and RH Drive Models
Engine Compatibility 5.0L Coyote DOHC V8 (Gen 2) Body Configuration Convertible Only

Important Fitment Notes:

  • Specifically engineered to fit Ford Mustang S550 GT Convertible models powered by the 5.0L Coyote V8 engine configuration (2015–2017 models).
  • Convertible Specific Layout Constraints: Mustang Convertibles feature extensive cross-bracing under the vehicle center floor pan to maintain structural rigidity. This kit features specific piping bends and modified intermediate paths to completely clear these factory braces without rubbing or vibrating. It will not align properly with standard Fastback Coupe variants.
  • Global Steering Compatibility: Underbody routing clearance metrics are optimized to seamlessly accommodate both Left-Hand Drive (LHD) and Right-Hand Drive (RHD) export market models.
  • Full kit scope: Comprehensive high-flow large-bore 3" cat-back line including performance intermediate plumbing sections and a signature double-skinned rear muffler assembly with polished tips.
  • Direct bolt-on design reuses your vehicle's factory rubber hanger positions and standard catalytic converter paths. No custom fabrication or cutting layout mapping is required.
  • Professional automotive performance technician installation is highly recommended to guarantee ideal ground clearance around soft-top under braces, strict alignment, and gas-tight seals under the floor pan.

Vehicle Applications:

Make Model From To Body Series Engine Variant Drivetrain
FORD MOTOR COMPANY
Ford Mustang GT 2015 2017 Convertible Only S550 (Pre-Facelift Generation) 5.0L Coyote V8 GT Premium (LHD & RHD Markets) RWD
Warranty Information
Product Warranty Period
Pacemaker Sports Exhaust Systems Five (5) years.

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Exchange/Return Notes
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SKU: 91401067974

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Product Reviews
J
Verified Purchase
Jose Perez
Alexandria, US
★★★★★ 5
they give what they offer
Size: 5 Quart, Style: Full Synthetic, Configuration: 0W-40
great service from seller it was exactly how much oil quantity i ordered and its great quality
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 29, 2026
D
Verified Purchase
Dustin
Omaha, US
★★★★★ 5
Works if you need help. Not a miracle in a bottle.
Size: 1 Count (Pack of 1)
It has worked every time I've used this product. Won't fix a damage catalytic converter but will help you pass the test if your car almost passed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 28, 2026
L
Verified Purchase
Leslie Price
Port Orchard, US
★★★★★ 5
Worked like a charm.
Size: 1 Count (Pack of 1)
Used it as directed. Down to an eighth of a tank. Poured it in and added enough gas to get back to one half a tank. Wanted to get it mixed in really well. Immediately jumped on the interstate and ran 75 MPH for 40 miles. Stopped and filled the tank and when I restarted the engine, the light was off. Coincidence? Not a chance. Light had been on continuously for weeks. AutoZone said I needed a catalytic converter. Nope. One thing I found out the hard way. If your gas filler has a flap at the top, make sure it is easy to push aside. Mine had a little release button near the top that the filler hose would depress before the flap would release. Dumped the first bottle right on the ground. Twelve bucks wasted. No one to blame but me, I guess. Still a bargain, even at twice the price.
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Reviewed in the United States on February 17, 2026
B
Verified Purchase
Brenda A DeRouen
New York, US
★★★★★ 1
Before use on March 15 two days later March 17 engine light still on
Size: 1 Count (Pack of 1), Size: 1 Count (Pack of 1)
I read the specs on this product and it was guaranteed to cleanse as well as turn engine light off in vehicle. I received it March 14.2026 and used it on March 15.2026 I took a picture on Sunday before I entered it into the gas tank engine light was on at that time. Today is March 17.2026 and engine light is still on. The truck was driven for one hour on the 15th 45 minutes on the 16th and 50 minutes on 17 March. Still the engine light is on. Got home parked the vehicle took a picture again to show engine light is still on product guaranteed it was shut it off, but unfortunately product does not work.
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Reviewed in the United States on March 17, 2026
A
Verified Purchase
Amazon Customer
Belleville, US
★★★★★ 4
Good stuff
Size: 1 Count (Pack of 1)
I've used and it's worked for emissions for me and that's with having check engine light on..use stuff,drive around a bit,clear code drive to emissions and should b good unless got serious problems. It's good to use 1 or 2 times a yr if high mileage vehicle.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2025

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