Stainless Works 15-24 Mustang GT Headers Aftermarket Connect 1-7/8in Exhaust (part # M24H3CATLG), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2015–2026 Mustang GT
Long Tube Headers
3" Collector
Made in USA
Overview
Rev up your 2015+ Mustang GT with a precision-crafted header system from Stainless Works.
Meticulously engineered to unleash maximum horsepower from your 5.0L Coyote engine, this system is built for Mustang owners who do not compromise on performance.
Available with 1-7/8" or 2" primary tubes, each header flows into a 3" collector with integrated merge spike for improved exhaust scavenging, horsepower, and torque.
Multiple connection options let you match your build, whether you are connecting to the stock exhaust, a Stainless Works catback, or most aftermarket catbacks.
Built from corrosion-resistant 304 stainless steel and fully TIG welded for strength and beauty, this bolt-on upgrade is designed to last a lifetime.
Why Stainless Works
- American-made from raw material to finished product
- TIG welded by skilled craftsmen for strength and beauty
- Lifetime warranty on material and craftsmanship
- Direct bolt-on fit for 2015+ Mustang GT 5.0L
- Multiple connection options to match your build
Key Features
1-7/8" or 2" Primary Tubes
Choose the primary size that best matches your Mustang GT build.
3" Collector
Integrated merge spike supports improved exhaust flow and performance.
Factory Connection
Fits to stock exhaust with a 2-1/4" connection.
Performance Connection
Fits Stainless Works catback systems with a 3" connection.
Aftermarket Connection
Fits most aftermarket catbacks with a 3" connection. May require cutting.
Bolt-On Power
Adds horsepower and torque with a true performance header upgrade.
Mandrel Bent Tubing
Smooth airflow with zero restriction bends.
TIG Welded Construction
Precision welds for maximum durability.
Specifications
| Vehicle Fitment |
2015+ Mustang GT 5.0L |
| System Type |
Long Tube Header Kit |
| Primary Tube Size |
1-7/8" or 2" |
| Collector Size |
3" Collector with Integrated Merge Spike |
| Factory Connection |
Fits To Stock Exhaust - 2-1/4" |
| Performance Connection |
Fits Stainless Works Catback - 3" |
| Aftermarket Connection |
Fits Most Aftermarket Catbacks - 3" - May Require Cutting |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Warranty |
Lifetime |
| Origin |
Made in USA |
⇩ Download 2015–2023 Instructions (PDF) ⇩ Download 2024+ Instructions (PDF)
See It In Action
Sound Comparison and Features — 2015–2026 Mustang GT Header System
What's In The Box
- Driver Side Header x1
- Passenger Side Header x1
- Catalytic Converter x2
- Lead Pipes x2
- Clamps x4
- O2 Extension x4
- Bolt Kit - 16 Pieces
- RTV x1
- Installation Instructions 2015–2017
- Installation Instructions 2018–2023
- Installation Instructions 2024+
Frequently Asked Questions
Will these headers fit my 2015–2026 Mustang GT?
Yes. This header system is designed for 2015+ Mustang GT models with the 5.0L engine.
What primary tube sizes are available?
These headers are available with 1-7/8" or 2" primary tubes depending on your build.
What connection options are available?
Factory Connection fits the stock exhaust at 2-1/4", Performance Connection fits Stainless Works catbacks at 3", and Aftermarket Connection fits most aftermarket catbacks at 3" and may require cutting.
What warranty is included?
Stainless Works provides a lifetime warranty on material and craftsmanship.
Customer Reviews
★★★★★
Wow!
Verified Buyer — Dustin Walker | August 23, 2025
What a world of difference! Fit and finish is fantastic and the car sounds absolutely amazing. 1000% recommend.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Built To Order in 4 Weeks — Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: M24H3CATLG
- Product type: Headers
- Fitment: 2015-2024 Mustang GT
- Configuration: 1-7/8, Aftermarket Connect
- EPA status: Testing
- Shipping weight: 61.6 lb
California Prop 65 warning applies to this product.
Emissions note: headers, downpipes and catless/high-flow pipes may not be legal for street use in all states. Check your local emissions laws before installing.
Fitment note: Stainless Works systems are application-specific (year, cab/bed, transmission and factory exhaust). Send us your VIN before ordering and we will confirm fitment: 954-507-6261 or sales@americanmuscleperformance.net.
