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Home / Exhaust / Catback / Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back System
Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back SystemRepresentative image
Appearance and included parts may differ. Image availability does not confirm fitment or availability.
Flowmaster

Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back System

PART 817574CATEGORY Catback
$584.95
MSRP $658.95You save $74.00
$584.95
1
LISTED BY THE MANUFACTURER FOR

“Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back System”

“1986-2004 Ford Mustang GT, LX, & Cobra with 4.6L and 5.0L engines...”

Confirm fitment with the part number before ordering.

Product information

Manufacturer information. Check the part number and installation requirements for your vehicle.

Supplier details checked 2026-09-23 · Test catalog

Product description

1986-2004 Ford Mustang GT, LX, & Cobra with 4.6L and 5.0L engines. Fits coupes and convertibles - Aggressive sound

Flowmaster American Thunder Cat-back Exhaust System

Features

Fits with most modified suspensions

Stainless Steel Construction

Lifetime limited warranty

Delta Flow Technology

Manufacturer notes

Fits 1986-2004 Ford Mustang GT, LX, & Cobra models with 4.6L and 5.0L engines. Fits coupes and convertibles

Supplier category
Exhaust, Mufflers & Tips
Supplier subcategory
Catback
UPC / barcode
700042026531
Units per product
1
Supplier Proposition 65 status
Y
Supplier EPA status
N/A
Air freight prohibited
No
Not CARB approved
No
CARB acknowledgement required
Yes
Freight delivery required
No
Powersports product
No
More manufacturer information

Other product descriptions

Flowmaster 86-04 Mustang 4.6L/5.0L American Thunder Exhaust Cat-Back System

8604 MUSTANG 46L50L DUMPS AMT

SYS 86-04 MUSTANG 4.

About the manufacturer

Flowmaster's race-inspired American Thunder® Extreme Cat-back system is designed to mount behind the factory catalytic converters, or most original style aftermarket H-pipes. The turn-down tailpipes drop at the rear of the transmission and eliminates full length tailpipes to maximize the sound level and allow for extra clearance for wide tires and modified suspensions. These systems are mandrel bent for maximum performance and include Super 44 series mufflers. This American Thunder Extreme system delivers a super aggressive interior and exterior tone and is suited to the enthusiast who wants the most aggressive components they can purchase. Like all Flowmaster systems, the benefits include improved throttle response and power. Designed for an easy fit, these systems include all necessary parts and hardware for easy installation. Notes: Fits coupes and convertibles

Additional manufacturer information

SYS 86-04 MU

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