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1979-04 Mustang Ford Performance Aluminum Driveshaft 31 Spline by Ford Performance

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Ford Performance Mustang Aluminum Driveshaft 31 Spline (79-04) M-4602-JA
  • Ford Performance Mustang Aluminum Driveshaft 31 Spline (79-04) M-4602-JA
  • Ford Performance Mustang Aluminum Driveshaft 31 Spline (79-04) M-4602-JA

This Ford Performance 1979-2004 Mustang aluminum driveshaft reduced weight & adds performance to your Mustang!

Item #M4602J
MPN# M-4602-JA

Everyday Low Price: $373.99

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  • Improves Acceleration
  • Reduces Unsprung Weight
  • Reduces Driveline Vibrations


  • 31 Spline Yoke
  • High Strength
  • 6061-RT62 Aluminum Construction

What's in the Box

  • (1) Aluminum Driveshaft Assembled w/ U-Joints, Slip Yoke & Rear Flange

Made in the USA

Product Description

Improve Acceleration and Reduce Vibration
Improve the Acceleration of your Mustang by replacing the heavy steel driveshaft with a light-weight aluminum driveshaft from Ford Performance Performance Parts. The reduced unsprung and rotational mass takes less power to turn meaning more power makes it to the wheels. The FRPP driveshaft is also high speed balanced and fitted with heavy duty u-joints so many driveline vibrations are reduced or eliminated after installation.

Increased Power Handling
The FRPP Ford Performance Mustang Aluminum Driveshaft is constructed from high strength, 3.5" diameter 0.114" wall thickness 6061-RT62 aluminum seamless drawn tube. Then it is fitted with heavy duty 1330 u-joints and Mustang correct transmission yoke and axle flange. This allows for much greater power handling over the stock steel driveshaft.

Tech Specs
The M-4602-J Driveshaft measures 45.5" long, center of u-joint to center of u-joint. The transmission yoke is a 31 spline and the rear axle flange will bolt right to the factory installed 8.8" rear end in one of the below Mustang's.

Additional Installation Notes
Clearance between the mufflers/exhaust and driveshaft needs to be verified regardless of ride height and it needs to be checked with the suspension compressed (car at ride height). 1993-2004 Mustangs occasionally have interference issues between the driveshaft and the front parking brake cable bracket that is spot welded to the underside of the transmission tunnel. Sometimes the spot-welds break and the bracket will make contact with the driveshaft. Lowered ride height will make this issue worse. The bracket can be trimmed slightly for more clearance. If the spot-welds have broken, they MUST be repaired to rectify the situation.

  • Fits 1979-1995 Mustang 5.0L/5.8L w/ Manual Transmission (Tremec TKO/TKO 500/TKO 600 - Must use driveshaft spacer on 94-95)
  • Fits 1979-1993 Mustang w/ 4R70W Automatic Transmission
  • Fits 1996-1998 Mustang Cobra 4.6L 4V w/ T45 Manual Transmission
  • Fits 1996-2004 Mustang GT/Bullitt 4.6L 2V w/ T45/TR3650 Manual Transmission
  • Fits 2003-2004 Mustang Mach 1 4.6L 4V w/ TR3650 Manual Transmission

Disclaimer - Driveshaft Hardware
The 1979-2004 Mustang factory driveshaft bolts are installed using a threadlocker chemical and are NOT torque to yield. If reusing the factory bolts, clean the old threadlocker material from the threads, and apply new blue threadlocker before reinstalling the bolts or use new driveshaft bolts and apply blue threadlocker to threads and torque to the factory specifications. New bolts can be found here: HDW-4602.

For 2005-2020 Ford Mustangs, it is recommended that you install new driveshaft to pinion flange bolts when removing the driveshaft. The driveshaft to pinion flange bolts are torque to yield and should be torqued to 41ft-lbs.

Ford Performance Racing Parts "Packs" and Component Parts Limited Warranty - Click Here
Ford Performance Racing Parts - NO WARRANTY - Click Here
Ford Performance Racing Parts Crate Engine Limited Warranty - Click Here

Fitment Notes

  • Will NOT fit 1999-2004 Cobra with IRS
  • Will NOT fit OE T56 or T56 Magnum transmissions
  • The u-joints on this drive shaft are a sealed unit and do not have grease zerk fittings.
  • Definitely will NOT fit 03-04 Cobra. Some 99/01 Cobra owners have reported the M-4602-J Driveshaft will fit unmodified while most report that the M-4602-J needs to be shortened 1" to fit the 99/01 Cobra

California Residents:
Prop 65 Warning SignWARNING: Cancer and Reproductive Harm- www.P65Warnings.ca.gov

Product Videos

Mustang Aluminum Driveshaft Review - Ford Racing M-4602-G & M-4602-J

Check out our YouTube channel for even more tech tips, installation videos, how-tos, and more. The best place to go for anything Mustang related!

Customer Photos (8)

  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft
  • Aluminum Driveshaft

Vehicle Applications

Ford Mustang - 1996 (96) - 1997 (97) - 1998 (98) - 1999 (99) - 2000 (00) - 2001 (01) - 2002 (02) - 2003 (03) - 2004 (04)

Ford Mustang - 1979 (79) - 1980 (80) - 1981 (81) - 1982 (82) - 1983 (83) - 1984 (84) - 1985 (85) - 1986 (86) - 1987 (87) - 1988 (88) - 1989 (89) - 1990 (90) - 1991 (91) - 1992 (92) - 1993 (93) - 1994 (94) - 1995 (95)

About This Brand

Ford Performance
Ford Performance - Mustang Ford Racing Parts
Ford Performance Parts is the leader in performance parts and accessories for Mustang and Ford Lightning.

LMR.com is proud to offer Ford Racing Performance Parts for your project. Ford Racing is dedicated to manufacturing the highest quality products offered in the industry. Choose from suspension, exhaust, wheels, and other performance parts at Late Model Restoration. If you want the best for your Mustang or SVT Lightning, look no further than Ford Performance Parts!

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