Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert
Transmission Mount Insert

Transmission Mount Insert

$135.00
Select Application:964/993 (RWD)
Select Hardness:SOFT (60A) / Orange
FITMENT
  • 964 / 993 / 996 / 997 / 991 (1989 - 2019)

The OEM transmission mount was designed for ride comfort and is prone to sagging and tearing – above all, it is a detriment to performance.  Its empty voids allow for too much transmission movement, resulting in sloppy handling, numbed responsiveness, and imprecise shifting.  Racecars utilize a solid metal mount to mediate this, which is impractical for street use as it transfers extreme noise and vibration into the cabin.

So how do you achieve the benefits of a solid mount while retaining daily drivability?  FUNCTION-FIRST Performance offers the most effective and easy to install solution.  Our durable urethane rubber insert simply slides in to fill and fortify the empty voids of the OEM mount, preventing premature bushing wear and undesirable transmission movement, all while transmitting minimal added noise and vibration.

The result? Handling is taut and predictable; power delivery is immediate and smooth; gear changes are crisp and confident.

Installation can be completed in about 1-hour.  Pressing out the stock transmission mount bushing is NOT necessary, since the insert halves slide in from either side and are then held in place by the transmission support brackets upon reassembly.

Choose between three hardness levels:

  1. SOFT (60A) | Orange - for added performance and to restore and preserve your OEM mount with minimal NVH
  2. SPORT (70A) | Yellow - for tuned and sport-oriented performance street cars, with less NVH than TRACK version
  3. TRACK (80A) | Black - for optimized performance on track and racecars where NVH is not a consideration

OEM Bushing

Please be aware: Although the inserts will help prevent the OEM bushing from tearing, if the bushing is already torn, it will need to be replaced. The inserts serve as a supplement to the bushing, not a replacement. In some cases of extreme bushing sagging, a vise or C-clamp with adequate silicone based lubrication will aid in installation of the inserts. (The 996 series bushings, especially, have a tendency to distort and sag over time.) For 996 GT and Turbo applications, please make sure that you are ordering the correct Insert for your transmission mount. Several customers have found that previous owners with failed OEM trans mounts had them replaced with the 997 unit, and that Transmission Mount Insert design is different compared to the 996 unit.

PLEASE NOTE:  The OEM bushing is shown for illustrative purposes only and is not included with the Transmission Mount Insert

Price is per pair: only 1 pair needed per car.

Installation Guide

Customer Reviews

Based on 3 reviews
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33%
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M
Max

Performed as promised in the "tightens everything up" department - totally eliminates the small amount of driveline slack in a 991. But, sadly, the engine vibration / harshness increase is just way too much for a daily driver. And I got the softest of the 3 inserts. I pulled them back out after only 200 miles. Really just an unacceptable amount of noise, especially when decelerating in gear around 2500rpm (which happens ALL THE TIME when driving around town). Too bad. Would be fine for a track car but honestly I wouldn't even do this for a "weekend toy". The idea is great but I'd advise further engineering on these to strike a better balance of stiffness and NVH.

D
Donald

Love the change in the car’s character. The car seems tighter and more responsive. I can’t really tell an increase in road noise, it’s a cabriolet anyway. Installation was very straightforward. I’m 66 and did it lying on my back. Very happy with the purchase.

L
Lee RamblinGirl66

I love how the inserts really take up any slop in the transmission mounting! Shifts are Very smooth, and the version I bought (orange/street) were relatively easy to install as well! Thank you!