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Exhaust System Kit
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Exhaust System Kit (Flowmaster) for 1964-1966 Ford Mustang NEW

Out of Stock
$ 1,118 .32

Product Notes

⚠️ Most jobs typically require 2 of this item.
Dual; Dual Rear Exit; Incl. 2.5 in. Tubing From Trans X - Member Back/H-Pipe/40 Series(TM) Delta Flow Mufflers/Stainless Steel Tips;50 State Legal / California Emissions Compliant
American Thunder Downpipe Back Exhaust System
This American Thunder(R) crossmember-back exhaust system is custom designed for the 1964-1966 Ford Mustang and is perfect for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone, and a moderate interior sound. With easy fit in mind, these 16-gauge aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures and a pair of specially selected 40 Series Delta Flow performance mufflers for a deep powerful sound. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and the last few feet is all polished stainless steel for a show car look. Like all Flowmaster(R) systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation. The system is covered by our 3-year Limited Warranty. Connects to existing header collector reducer cones or manifold downpipes(not included.) If you prefer a full stainless steel system with a Lifetime Limited Warranty, check out exhaust system #817273. Notes: For non GT and hardtop models.
Brand: Flowmaster
Condition: New
See All Other Exhaust System Kits
LIFE
TIME
Lifetime Warranty Included
This part is backed by our industry-leading lifetime warranty. Shop with total confidence.
100%money-back 120-dayreturns OE-gradequality
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Specifications & Info


Attribute Value
Exhaust Series American Thunder
Exhaust Type Dual
Exit Position Dual Rear
Exit Style Straight
Heat Shield Attached No
Inlet Diameter 2.500 In.
Inlet Inside Diameter N/a
Muffler Count 2
Muffler Part Number 942541
Muffler Series 40 Series Delta Flow
Outlet Outside Diameter 2.500 In.
System Type Header Back
Tail Pipe Diameter 2.500 In.
Tip Diameter 2.500 In.
Tip Quantity 2
Tubing Diameter 2.500 In.
WARNING CA Proposition 65 Yes

Vehicle Fitment Guide

This part fits the following vehicles:

Ford 1 model (tapclick to expand)(tapclick to hide)
Mustang 1964-1966 (tapclick to expand)(tapclick to hide)
Swipe left/right to see more info
SubmodelSUB-
MODEL		 Body Style Years Engine Attributes
Base Convertible 1964 - 1965 L6 2.8L RWD Automatic & Manual & U/K
Base Convertible 1964 - 1966 L6 3.3L RWD Automatic & Manual & U/K
Base Convertible 1964 - 1965 V8 4.3L RWD Automatic & Manual & U/K
Base Convertible 1964 - 1966 V8 4.7L RWD Automatic & Manual & U/K
Base Fastback 1965 L6 2.8L RWD Automatic & Manual & U/K
Base Fastback 1965 - 1966 L6 3.3L RWD Automatic & Manual & U/K
Base Fastback 1965 V8 4.3L RWD Automatic & Manual & U/K
Base Fastback 1965 - 1966 V8 4.7L RWD Automatic & Manual & U/K
Base Hardtop 1964 - 1965 L6 2.8L RWD Automatic & Manual & U/K
Base Hardtop 1964 - 1966 L6 3.3L RWD Automatic & Manual & U/K
Base Hardtop 1964 - 1965 V8 4.3L RWD Automatic & Manual & U/K
Base Hardtop 1964 - 1966 V8 4.7L RWD Automatic & Manual & U/K
Shelby GT-350 Fastback 1965 - 1966 V8 4.7L RWD U/K
Shelby GT-350H Fastback 1966 V8 4.7L RWD U/K
Verify before ordering — please confirm your vehicle's year, make, model and sub-model specifications before placing your order. If anything is unclear, our customer service team is available to help.

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Shipping Information

We offer fast, reliable shipping on all orders:

  • Ships to all countries via US Postal Service Priority Mail.
  • Most orders ship within 1 business day.
  • Delivery time: 1-4 business days after shipment.
  • International shipping available, including APO/FPO addresses.
  • Tracking information provided for all shipments.
  • Additional handling fees may apply for oversized/overweight packages.

Return Policy

We want you to be 100% satisfied with your purchase. That's why we offer:

  • 120-Day Returns - Return any part within 120 days from date of receipt.
  • Must obtain RMA (Return Merchandise Authorization) number before returning.
  • Parts must be in original condition, uninstalled, unaltered, and in original packaging.
  • Important: Electrical parts are not returnable if unsealed.
  • Please inspect parts upon arrival and notify us within 5 days of receiving incorrect or damaged parts.
  • Refunds processed after warehouse receives return and credited to original payment method.

Warranty

This part comes with a limited lifetime warranty. Warranty begins on the original purchase date.

Warranty does NOT cover:

  • Shipping costs or labor expenses.
  • Installation errors.
  • Parts used for racing.
  • Commercial vehicle parts.
This American Thunder(R) crossmember-back exhaust system is custom designed for the 1964-1966 Ford Mustang and is perfect for the person looking for a complete 2.50-inch dual exhaust system with a moderately aggressive exterior tone, and a moderate interior sound. With easy fit in mind, these 16-gauge aluminized steel systems feature all mandrel-bent tubing, an H-pipe to equalize the exhaust pressures and a pair of specially selected 40 Series Delta Flow performance mufflers for a deep powerful sound. The mandrel-bent 2.50-inch tailpipes tuck up out of the way for maximum clearance and the last few feet is all polished stainless steel for a show car look. Like all Flowmaster(R) systems, benefits include improved throttle response, power, and mileage. Designed for an easy fit, these systems include all necessary parts, hardware and instructions for an easy installation. The system is covered by our 3-year Limited Warranty. Connects to existing header collector reducer cones or manifold downpipes(not included.) If you prefer a full stainless steel system with a Lifetime Limited Warranty, check out exhaust system #817273. Notes: For non GT and hardtop models.

Fits Years: 1964 1965 1966

Fits Models: Mustang

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