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Professional Products Powerforce Harmonic Damper (96-04 4.6L)

3 Reviews
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  • Item #20059
  • MPN# 80011

  • Market Price $104.99
  • You Save 10% ($10.00)
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  • Street Use
  • Black anodized finish
  • 6.8" Diameter
  • Fits 1996 to 2004 4.6L Mustangs
Practically Indestructible. The Powerforce Harmonic Damper features a unique bonding process which adheres the elastomer to the inner diameter of the inertia ring and the outer diameter of the hub with a stronger adhesive making the damper practically indestructible. And this damper features a notch in the back of the rim indicating Top Dead Center (TDC).

Application. This Professional Products PowerForce Harmonic Damper is designed for use on the 1996 to 2004 2 valve and 4 valve 4.6L Mustangs.

Technical Note. When used on 4 valve applications the accessories (alternator, A/C, etc) will spin 3% slower than stock. This harmonic damper is not SFI-approved for track use.

Mustang Fitment: 1996 1997 1998 1999 2000 2001 2002 2003 2004 Details

What's in the Box
  • (1) Harmonic Damper
Installation Info
Will it fit my Mustang?
  • Bullitt - 01
  • Mach 1 - 03, 04
  • Cobra - 96, 97, 98, 99, 01, 03, 04
  • GT - 96, 97, 98, 99, 00, 01, 02, 03, 04

Fits 4.6L V8's Only

Most Helpful Reviews Read All Reviews

Overall Rating 4.7/5 Write a Review

Great product! Works awesome and at an amazing price

Helpful (1) (1)

Powerforce Performance Damper

fit perfectly. Timing marks are easy to see. The annoying thing is that you will need a longer serpentine belt . The stock one is too short.

Helpful (0) (2)

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Q & A (3 Questions, 1 Answers) Ask a Question

does this damper can be used with the sr underdrive pulley 96 - mid 01 gt I have just bought the sr underdrive pulley 96-mid 01 gt and my mechanic says that i need a new damper i dont want to buy the oem this one seems to look that can do the work, but i want to know if this damper fit with my new underdrive pulleys thanks

LuisVt Year: 2000 Model: GT

Good Question (0) (0)
  • Your mechanic is full of it; you don't need to replace your crank pulley to use underdrive pulleys. I've seen over a dozen different types of engines with underdrive pulleys on the stock crank pulley and it worked fine. Now; if your stock crank pulley is in bad shape (as they can get to be after 10+ years), and the rubber is getting brittle or the two halves are beginning to lose their adhesion, which can cause a serious problem down the road, THEN you would want to get a new crank pulley. There's nothing wrong with not wanting another OEM unit, though it would work perfectly well. **This damper will work just fine with your other pulleys.** It's worth noting that if you have a 4 valve engine (you didn't specify what you have, so I don't know), this damper will further underdrive your accessories by another 3%. I didn't see how much the SR pulleys underdrive the accessories, but I'd guess around 10%; that's a pretty standard number. With the additional underdriving going on, you might notice some charging issues at idle - lights dimming, electronics acting funky; the alternator just isn't spinning fast enough to be able to charge the battery. In addition, the water pump may have a harder time keeping the engine cool at idle. Therefore, you may want to raise the idle up about 200rpm to compensate for it if you have the ability to do so - i.e. tuner, etc.

    Helpful (2) (0)

    hawkeye18 Year: 2012 Model: GT

    Top 250 Contributor

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size is this the same size as stock?

Mustangmike351 Year: 1998 Model: Cobra

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Good Question (0) (0)

Can anyone offer advice on how this one compares to the 2001 mustang bullitt damper? I don't want to mix up something since I know the bullitt came under driven and possibly spin something too slow like my water pump. My damper is just at 160k miles and i want to replace it before it starts to go.

Dashix Year: 2001 Model: Bullitt

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Reviews (3) Write a Review

  • 5 Stars .67 67%
  • 4 Stars .33 33%
  • 3 Stars 0 0%
  • 2 Stars 0 0%
  • 1 Stars 0 0%

out of 5 stars

3 Customers Recommend this Product

Installation Time:Afternoon

  • Performance Gain: 3 3/5
  • Fit: 4 4/5
  • Bang For Your Buck: 5 5/5
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  • 5/5 Yes, I recommend this product

    February 10, 2010


    Great product! Works awesome and at an amazing price

    Jesus Pena

    Helpful (1) (1)

  • 4/5 Yes, I recommend this product

    March 20, 2012

    Powerforce Performance Damper

    fit perfectly. Timing marks are easy to see. The annoying thing is that you will need a longer serpentine belt . The stock one is too short.


    Year: 1998 Model: Cobra Driving Style: Daily Driver 'Stangs I have owned: 2 Mountain View, CA

    Helpful (0) (2)

  • 5/5 Yes, I recommend this product

    August 22, 2014

    powerforce damper

    I bought this damper to replace my old aluminum piggyback style underdrive crank pulley after the key slot wore through it give you peace of mind knowing that this pulley is solid and built to last im not afraid to say that this product is better constructed and looks way better than stock can't go wrong with adding it to the list of mods


    Year: 2002 Model: GT Driving Style: Daily Driver 'Stangs I have owned: 1 carlisle pa

    Helpful (0) (0)

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