Stainless Works 2003-04 Mercury Marauder Headers 1-5/8in Primaries 2-1/2in High-Flow Cats (part # MAUCAT), built from 304 stainless steel by Stainless Works in Streetsboro, Ohio.
304 Stainless Steel
TIG Welded
2003-04 Marauder
Lifetime Warranty
Made in USA
Overview
Improve the sound and performance of your 2003-04 Mercury Marauder with premium long tube headers from Stainless Works.
Designed with 1-5/8" CNC mandrel-bent primary tubes, these headers improve exhaust flow while increasing horsepower and mid-range torque.
Each system features 3" collectors with integrated merge spikes and high-flow catalytic converters for optimized scavenging and smoother exhaust flow.
Built from corrosion-resistant 304 stainless steel and TIG welded in Streetsboro, Ohio — engineered for long-term durability and performance.
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 2003-04 Mercury Marauder
- Pairs perfectly with Stainless Works catback for a full system upgrade
Key Features
Long Tube Design
Improves exhaust scavenging for more power and torque.
1-5/8" Primary Tubes
Optimized sizing for improved horsepower and mid-range torque.
Integrated Merge Spikes
Enhances exhaust scavenging and improves overall flow efficiency.
High-Flow Cats
EPA compliance with improved flow.
Mandrel Bent Tubing
Smooth airflow with zero restriction bends.
TIG Welded Construction
Precision welds for maximum durability.
Specifications
| Vehicle Fitment |
2003-04 Mercury Marauder |
| Primary Tube Size |
1-5/8" |
| Collector Size |
3" |
| Catalytic Converters |
EPA Compliant High-Flow |
| Material |
304 Stainless Steel |
| Welding |
TIG Welded |
| Connection |
Fits Stainless Works and most Aftermarket Exhausts |
| Warranty |
Lifetime |
| Origin |
Made in USA — Streetsboro, Ohio |
See It In Action
Sound Comparison and Features — 2003-04 Mercury Marauder Long Tube Header Kit
What's In The Box
- Driver Side Header x1
- Passenger Side Header x1
- Cat Converters x1
- Lead Pipes x2
- Clamps x4
- O2 Extensions x2
- Header Bolt Kit x16 Pieces
- RTV Tube x1
- Installation Instructions
Frequently Asked Questions
Will these headers fit my 2003-04 Mercury Marauder?
Yes. These headers are designed specifically for the 2003-04 Mercury Marauder and provide a direct bolt-on installation.
Do these headers include catalytic converters?
Yes. This kit includes EPA compliant high-flow catalytic converters designed to improve exhaust flow and performance.
What material are these headers made from?
These headers are built entirely from corrosion-resistant 304 stainless steel and fully TIG welded for long-term durability.
Can I pair these with a Stainless Works exhaust system?
Absolutely. These headers pair perfectly with Stainless Works catback exhaust systems for a complete performance upgrade.
Where are these headers manufactured?
All Stainless Works headers are proudly manufactured in Streetsboro, Ohio using premium American-made materials and craftsmanship.
Questions? Call us at | Mon–Fri 7:30am–4:30pm EST
Free Shipping on Orders $50+
This Listing
- Brand: Stainless Works
- Part number: MAUCAT
- Product type: Headers
- Fitment: 2003-04 Mercury Marauder
- Configuration: High-Flow Cats
- EPA status: Testing
- Shipping weight: 47.7 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.
