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SLP Ceramic Long Tube Headers (03-04 Cobra, Mach 1)

AmericanMuscle no longer carries the SLP Ceramic Long Tube Headers (03-04 Cobra, Mach 1). Please check out 1999-2004 Mustang Long Tube Headers for an updated selection.
8 Reviews
Our Price

$899.99

  • Item #23011
  • Market Price $999.99
  • You Save 10% ($100.00)
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AmericanMuscle no longer carries the SLP Ceramic Long Tube Headers (03-04 Cobra, Mach 1). Please check out 1999-2004 Mustang Long Tube Headers for an updated selection.

Customer Photos
Features
  • Increase of up to 30 RWHP
  • Long Tube header design
  • Free flowing Mandrel-bent tubing
  • Aluminum ceramic coating
  • Made in the USA
  • Fits 2003-2004 SVT Cobra and Mach 1 Mustangs
Description
Dyno-proven RWHP Gains. Get the most power out of your DOHC 4.6L with a set of SLP Long Tube Headers. These SLP ceramic coated headers will replace your restrictive stock factory manifolds to improve your mustangs exhaust flow and increase your Pony's horsepower and torque. Increases of up to 30 RWHP have been seen when installed with a matching SLP shorty X-pipe.

Aluminum Ceramic Coating. SLP uses a durable Aluminum Ceramic Coating on its long tube headers to reduce under hood temperatures, increase horsepower, lengthen the headers life, and for it's outstanding good looks. Ceramic Coated headers will long out last both polished and chrome plated headers.

Made In The USA. Hand-crafted right here in the U.S.A from 1-3/4" mandrel bent 409 stainless steel tubing, these SLP Long Tube Mustang Exhaust headers feature venturi-style velocity collectors to optimize exhaust flow, resulting in a monster increase of horsepower.

Recommended Upgrade. To realize the full power potential that these Long Tube Headers have to offer, AmericanMuscle recommends a custom tune with either a SCT SF3 or SCT LiveWire Custom Tuner.

Application. These SLP Ceramic Long Tube Headers are designed to fit the 2003 to 2004 SVT Cobra and 2003 to 2004 Mach 1 Mustangs. SLP recommends using their SLP shorty X-Pipe for a perfect fit and the best performance gains possible. Fits both automatic and manual transmissions.

Technical notes. Not legal for use on pollution controlled motor vehicles; intended for off road use only. Convertible models may require modifications to factory K-member cross brace.

Mustang Fitment: 1999 2001 2003 2004 Details

What's in the Box
Hardware included:
  • (2) Header gaskets
  • (16) M8-1.25 x 25mm Bolts
  • (2) 12" O2 Sensor Extension
Installation Info
Tech Specs
Header Specifications
Header Type: Long Tube Finish : Ceramic Coating
Type Mid Pipe Required: SLP Shorty Fitment: 2003-2004 Cobra and Mach 1 Mustangs
Fitment
  • Cobra - 99, 01, 03, 04
  • Mach 1 - 03, 04

Most Helpful Reviews View All

Overall Rating 4.8/5 Write a Review
5/5
SHOCKINGLY LOUD

These are so loud, when I start up my Stang, I scare my family inside the house.

Helpful (11) (1)

5/5
Amazing

The quality of these headers is amazing, i have a buddy that went the cheap route and got bbk heads, yeah they were nice... But NOTHING compared to these... amazing quality, you get what you pay for..

Read More
Helpful (8) (0)

Customer Photos (3) View All

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Reviews (8) Write a Review

  • 5 Stars .88 88%
  • 4 Stars 0 0%
  • 3 Stars .12 12%
  • 2 Stars 0 0%
  • 1 Stars 0 0%
4.8

out of 5 stars

7 Customers Recommend this Product

Installation Time:Weekend

Installation Cost:$250-$500

  • Performance Gain: 5 5/5
  • Fit: 4.666667 4.7/5
  • Bang For Your Buck: 5 5/5
Filter By Sort By
  • 5/5 Yes, I recommend this product

    March 03, 2008

    SHOCKINGLY LOUD

    These are so loud, when I start up my Stang, I scare my family inside the house.

    John Willis

    Helpful (11) (1)

  • 5/5 Yes, I recommend this product

    September 04, 2009

    Amazing

    The quality of these headers is amazing, i have a buddy that went the cheap route and got bbk heads, yeah they were nice... But NOTHING compared to these... amazing quality, you get what you pay for...

    Damien

    Helpful (8) (0)

  • 5/5 Yes, I recommend this product

    November 13, 2008

    Wow

    Wow these are loud. Get the SLP catted X-Pipe with the loudmouth and make those trans am and camaro guys put up their windows when you go by.

    Greg

    Helpful (7) (0)

  • 5/5 Yes, I recommend this product

    October 18, 2010

    Great Power adder

    Installed full slp exhaust Long tube headers with shortie X pipes and could not be more happy with the power I gained. The sound is Extreem. I am heard A mile or more away from my hose when I leave. Buy this product you will not be dissapointed. Only thing bad is the installation better if u take out the engine.

    Victor

    Driving Style: Street / Strip

    Helpful (5) (2)

  • 5/5 Yes, I recommend this product

    January 18, 2012

    SLP Long tubes

    Tough install, I had a tough time tightening one bolt on each side, but besides that what a difference! I love these tubes. I have the SLP all the way through, long tube headers, high flow cats, SLP X-pipe and Cat backs. I get nothing but compliments.

    OIFOEFMACH

    Year: 2003 Model: Mach 1 Driving Style: Street / Strip 'Stangs I have owned: 2 Arcadia, CA

    Helpful (1) (0)

  • 5/5 Yes, I recommend this product

    December 07, 2011

    SLP 1 3/4 Ceramic Long Tube Headers

    These headers are just like they are advertised. They look great in the box, and the performance gains where significant too. You cannot really see them on my car like they are made out to see. To much stuff under the hood. I also ordered the high flow cats and the x pipe to go along with it. I am running that straight out the back. My car sounds awsome and performs fantastic.

    Stacey13

    Year: 2004 Model: Mach 1 Driving Style: Daily Driver 'Stangs I have owned: 2 York, SC

    Helpful (1) (0)

  • 3/5 No, I do not recommend this product

    August 05, 2010

    not what i expected

    reading all the other reviews it makes it seem like these headers are loud. I bought these headers along with the catted x-pipe and my exhaust actually sounds QUIETER than it did before. Good power gains though.

    austin

    Helpful (5) (18)

  • 5/5 Yes, I recommend this product

    August 16, 2012

    Great Sound

    Sounds great. Bought them with the catted x-pipe and Magnaflow cat back. Nice mellow sound until you hit the go pedal and the it roars.

    Rexamus

    Year: 2003 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 3

    Helpful (0) (0)

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