2003 Ford Mustang Parts & Performance (V6, GT & Specialty)

2003 Ford Mustang ('03)
Ford made plenty of changes to the Mustang lineup in 2003. New colors called Dark Shadow Grey and Redfire were added to the options list to replace Mineral Grey and Laser Tint Red. The base model got the 1999 and 2001 Cobra hood. A new model called the Pony Edition was added to the lineup. It included the GT hood scoop, "Stampeding Pony" graphics, polished 16 inch wheels, and black inserts in the bumpers.

The 3.8-liter V6 carries over from 2002 generating 190-hp with the split-port induction to improve gas mileage. The 4.6-liter V8 in the GT carries over 260-horses from last year with large valves, equal-length manifold runners, and high-lift cams.

Ford also resurrected the venerable Mach 1 moniker for 2003. This limited-edition model had a number of unique enhancements. The Mach 1 got a new 4.6L DOHC V8 which produced 305 horsepower. This motor got air from a functional "Shaker" hood scoop. It also sported a flat black stripe that ran down the hood, black "Mach 1" side stripes, a black spoiler, and rolled exhaust tips. The seats were made from Comfort Weave like the originals. New Magnum 500 wheels were the only wheel offered on the Mach 1. A Mach could be had in Dark Shadow Grey, Torch Red, Black, Zinc Yellow, Oxford White, and Azure Blue, the latter of which was exclusive to the Mach 1.

The 2003 Cobra, or “Terminator”, makes a triumphant return, this time packing a brand new standard Eaton supercharger along with some other power upgrades as a support system. This new engine is an M112 roots style supercharged engine and puts down an impressive 390-RWHP. Upgraded engine components consist of Manley H beam connecting rods, specially designed Zolner pistons, heavy duty cast iron block, and aluminum flywheel. The 2003 Cobra also features a Tremec T-56 six-speed transmission, the first one offered in a Mustang, but is also available in a beefed up automatic. Some more improvements from 2001 consist of spring rates, Bilstein dampers on the front and rear, more durable brake pads. However, the 2003 Cobra’s rear axle carries over an independent (IRS) setup from 2001. All 2003 (and 2004) Cobras ride on 17 x 9 aluminum chrome wheels wrapped in Goodyear Eagle F1 Z rated tires and are available in coupe and convertible and the only year the Cobra is available in Sonic Blue. American Muscle is your source for aftermarket '03 Mustang parts. We have what you are looking for to get that edge over the competition. Check out our sections below. We have a great selection of 4.6 performance parts, accessories, gears, and more. Make sure you check out all the bargains we have available for your GT or V6 Mustang. You can make sure that your 4.6 has a great set of wheels or performance upgrades that will keep you ahead of the rest of the Mustang stampede.

2003 Mustang Parts

Ford Mustang Gifts & Apparel
99-04 Mustang Brakes
99-04 Mustang Drivetrain
99-04 Mustang Engine Parts
99-04 Mustang Exhaust
99-04 Mustang Exterior Styling
99-04 Mustang Intake Parts
99-04 Mustang Interior Styling
99-04 Mustang Lights
99-04 Mustang Restoration Parts
99-04 Mustang Suspension
99-04 Mustang Tires
99-04 Mustang Tuners
99-04 Mustang Wheels

2003 Ford Mustang Specs

Engine HP TQ 0-60 1/4 Mile
3.8L V6 193 225 9.9 sec N/A
4.6L SOHC V-8 260 302 5.5 sec 14.1 sec
4.6L DOHC V-8 305 320 5.2 sec 14.0 sec
4.6L DOHC Supercharged V-8 390 390 4.5 sec 12.9 sec
Retail Prices
Model Price
Standard Coupe $18,240
Standard Convertible $23,940
GT Coupe $24,110
GT Convertible $28,415
Mach 1 $28,995
SVT Cobra Coupe $34,750
SVT Cobra Convertible $38,995
Production Numbers
Model Quantity
Standard Coupe 59,943
Standard Convertible 26,500
GT Coupe 26,238
GT Convertible 15,518
Mach 1 9,652
SVT Cobra Coupe 8,395
SVT Cobra Convertible 5,082
VIN Decoder
Code Engine/Body/Options
4 3.8L OHV V6 193hp
X 4.6L SOHC V8 260hp
R 4.6L DOHC V8 305hp (Mach 1)
Y 4.6L DOHC Supercharged V8 390hp (Cobra)
40 Coupe
42 2dr Coupe GT and Mach 1
44 2dr Convertible
45 2dr Convertible GT
48 2dr Coupe Cobra
49 2dr Convertible Cobra
6 Check Digit (varies)
3 Year (3 - 2003)
F Plant (F - Dearborn)/td>
0000001 Consecutive Unit Number
1FA Ford Motor Co.
F Restraint System (F-air bags & active belts)
P Passenger Car
Production Numbers by Color
Model Quantity
Black 24,937
True Blue 10,245
Sonic Blue 7,566
Azure Blue (Mach 1) 2,223
Dark Shadow Gray 21,934
Silver Metallic 21,216
Redfire 20,908
Torch Red 14,992
Zinc Yellow 10,141
Tropic Green 3,445
Oxford White 16,449
Mineral Gray (Discontinued replaced by Dark Shadow Gray) 452 (All Cobra)
Satin Silver (Discontinued replaced by Silver Metallic Satin Silver (Discontinued replaced by Silver Metallic) 323 (All Cobra)
Mustang Exterior Colors
Color Code
Black UA
True Blue L2
Sonic Blue SN
Azure Blue (Mach 1) L5
Dark Shadow Gray CX
Silver Metallic YN
Redfire G2
Torch Red D3
Zinc Yellow B7
Tropic Green SU
Oxford White Z1
Mineral Gray (Discontinued replaced by Dark Shadow Gray) TK
Satin Silver (Discontinued replaced by Silver Metallic TL
Mustang Interior Trim Colors
Color Code
Dark Charcoal N/A
Medium Graphite N/A
Medium Parchment N/A
Oxford White N/A
Mustang Convertible Top Colors
Color Code
Black A
Parchment M
White W