2024-2025
2015-2023
2010-2014
2005-2009
1999-2004
1994-1998
1979-1993
Installation Time
(approx) a Day
Difficulty Level:
Mechanical expertise or professional installation required.
Installation Guides
No guide available for this part yet.
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Find Headers for your Mustang
Kooks 1-3/4 x 1-7/8-Inch Signature Series Stepped Long Tube Headers with Catted X-Pipe (15-20 Mustang GT350)Find parts that fit my vehicle
Item 463015
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$5,126.50 each
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Product Information
Features, Description, Q&A, Specs & Installation
Features & Specs
- Kooks 1-3/4 x 1-7/8-Inch Signature Series Stepped Long Tube Headers with Catted X-Pipe
- Stepped Long Tube Header System for Maximum Exhaust Flow and Power Gains
- Primary Tubes Stepping From 1-3/4 Inch to 1-7/8 Inch for Optimized Airflow
- Mandrel-Bent Stainless Steel Construction for High Strength and Corrosion Resistance
- High-Flow Catted X-Pipe Improves Scavenging and Exhaust Tone
- Designed for Race and Street Applications Needing Top-End Power
- Includes Gaskets and Hardware for Complete Installation
- Fits 2015–2020 Mustang GT350 Models
| Brand | Kooks |
| Header Type | Headers & Mid-Pipe Kit |
| Header Primary Size | 1.50-1.75 Inch |
| Header Collector Size | 3.00 Inch |
| Header Finish | Raw |
Description
Unleash Maximum Horsepower and Torque With Race-Ready Exhaust Flow. The Kooks Stepped Long Tube Headers With Catted X-Pipe deliver unrivaled exhaust efficiency, helping your Mustang GT350 achieve significant performance gains. Ideal for track enthusiasts and serious street builds, they improve throttle response and add an aggressive exhaust note.
Engineered for Peak Performance and Lasting Durability. Built from premium mandrel-bent stainless steel and featuring a stepped design, these headers maximize scavenging and high-RPM performance while resisting corrosion and exhaust heat stress.
Installation. This product installs by replacing the factory exhaust manifolds and mid-pipe. Professional installation is recommended due to the complexity of header installation.
Application. This Kooks 1-3/4 x 1-7/8-Inch Signature Series Stepped Long Tube Headers with Catted X-Pipe fits 2015–2020 Mustang GT350 models.
Kooks 1154H320
CA Residents: 
WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Installation & What's in the Box
Installation Info
What's in the Box
- (1) Header Assembly
- (1) X-Pipe Assembly
- (4) Gaskets
- (4) Mounting Bolts
- (1) Instruction Sheet
4.8
Reviews of Kooks Exhaust Products (500+)
Reviews of Kooks Exhaust products have an average rating of 4.8 out of 5
Questions & Answers
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Will It Fit My Mustang
- GT350 - 15, 16, 17, 18, 19, 20
- GT350R - 15, 16, 17, 18, 19, 20
