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1999-2003 Ford 7.3L Powerstroke Diamond Eye 4″ Aluminum Turbo Back No Muffler Exhaust System K4318A-RP


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Product Name: Diamond Eye Performance Exhaust Kit
Manufacturer: Diamond Eye Performance
Manufacturer Part #: K4318A-RP
Black Diamond Unlimited Part #: DEMK4318A-RP
Fitment Notes: Diamond Eye Performance Exhaust Kit – ’99-’03 FORD 4″ ALUM – TURBO BACK SINGLE (MUFFLER REPLACEMENT) – K4318A-RP

Thoroughbred Diesel is your source for Diamond Eye diesel exhaust kits. Shop Thoroughbred Diesel for Diamond Eye Exhaust kits, and Muffler Replacement kits for your Powerstroke 99-Early 03 Ford 7.3L F250/F350 Diesel. We are an authorized dealer of Diamond Eye so if you do not see the Diamond Eye product listed for your diesel truck, stop clicking and call us toll-free at 866-737-4966.

  • All Diamond Eye standard kit exhaust systems (stainless or aluminized) come with a T409 stainless steel muffler!!

Fits Powerstroke: 1999-Early 2003 Ford 7.3L F250/F350 Diesel (all cab and bed lengths)
4″ Aluminized Turbo Back Single

Did you know by upgrading your exhaust system you will reduce EGTs and increase horsepower, and even increase fuel mileage by reducing backflow restrictions? Diamond Eye Performance Diesel Exhaust System is just the thing you need to add good looks, increase performance, and lower EGTs.

The goal of Diamond Eye is to create a free-flowing pipe to extract exhaust gases that minimize horsepower reductions. Simply put — Bigger pipes work better! Most diesel pickup’s stock exhaust systems range from 3 to 3.5 inches in diameter, which is much less efficient than Diamond Eye’s 4-inch and 5-inch diameter pipes. Their CNC mandrel-bending machines and support equipment allow them to fabricate non-restrictive, free-flowing systems that your diesel engine will profit from. Diamond Eye affords you the choice of standard and muffler replacement kits (RP) in 3.5 in. up to bigger and better 5.0 in. systems, in either economical 16-gauge aluminized steel or longer-lasting, good-looking 409 stainless steel.

Diamond Eye exhaust systems come in a kit that includes the necessary clamps, hangers, and brackets that are prearranged for easy installation. Diamond Eye exhaust systems can be installed in a little over an hour.


1999, 2000, 2001, 2002, 2003, 2003.5




7.3L PowerStroke


F250, F350

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