1983-04 Mustang Prothane Urethane Rear Spring Isolators by Prothane

1983-04 Mustang Prothane Urethane Rear Spring Isolators

Reduce road noise in your 1983-2004 Mustang with this Prothane polyurethane rear spring isolator kit!

Item #PT-61701BL
MPN# 61701BL

Everyday Low Price: $23.99

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Made in the USA


  • Dampens Road Noise & Vibration
  • Will Not Dry & Crack Compared to Rubber
  • Improved Spring Performance


  • Polyurethane Construction
  • Black Finish

 What's in the Box

  • (2) Upper Spring Isolators
  • (2) Lower Spring Isolators

Mustang Prothane Spring Isolators

Replace the stock rubber spring isolators on your 1983-2004 Mustang with this rear kit from Prothane! The spring isolator's main purpose is to reduce noise produced when the suspension goes through its normal range of motion. If the spring isolators are missing, you would have metal to metal contact which would produce unwanted creaking and popping in the rear suspension during load shifting. Prothane's urethane isolators feature a polyurethane construction that's built to last. Polyurethane is more durable than your factory rubber isolators and will not dry out or crack! This kit includes two upper isolators and two lower isolators for the rear of your Mustang.

Ride Height Note

  • Due to the urethane construction, these isolators may affect the final ride height of your vehicle.


  • Fits 1983-2004 Mustang

Prothane Warranty - Click Here

  • Ford Mustang - 1983, 1984, 1985, 1986, 1987, 1988, 1989, 1990, 1991, 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2001, 2002, 2003, 2004
  • Will not fit 1999-2004 Cobra IRS.

California Residents:
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About This Brand

Lifted or lowered suspensions, increases in horsepower, plus-size wheels and tires can subject traditional rubber suspension bushings to forces beyond their limits. Control arms, strut arms, leaf springs, body mounts, motor mounts, transmission mounts, sway bars and shocks all control movement and maintain alignment but the rubber bushings they use are designed for more "middle of the road" use. Rubber also deteriorates over time, further reducing control. This contributes to premature component failure, a "spongy" ride and less than ideal performance handling. Urethane bushings can correct these conditions, and improve drivability in your Mustang or Ford Lightning.
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