CTA transmission tool

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Apr 17, 2026 | 12:03 AM

#16

bones519

Rennlist Member

Joined: Apr 2025

Posts: 34

Likes: 14

From: Washington DC

Quote:

Originally Posted by SoCal911t

It's been awhile since I did mine with the AGA tool but I remember it being pretty straightforward. I used some el-cheapo ratcheting box wrenches and I think put a little grease on the Acme threads on the tool. I don't remember if it seemed like the grease helped or not.

Thanks - helpful to know. I watched the AGA video and seems very straight forward but curious to know if there were any gotchas that came up for people. Glad to hear you didnt experience any.

Ha, plan to use those exact wrenches myself!

Apr 17, 2026 | 12:08 AM

#17

bones519

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Joined: Apr 2025

Posts: 34

Likes: 14

From: Washington DC

Quote:

Originally Posted by Bergs996.2

What is the go to bushing to use when replacing?

Not sure if its considered the “go to” but from of what I can tell most use (and what I’ll be using) is a genuine part - 996-375-055-05. The AGA video also says that the OE is a Lemforder part.

Apr 17, 2026 | 07:02 AM

#18

Paul Waterloo

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Joined: Jul 2013

Posts: 3,052

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From: Wilbur by the Sea, FL

If you search here,. there is a detailed post with pictures. I was going to post one, but then I found that one.

https://rennlist.com/forums/996-foru...ount-tool.html

There is a more detailed post somewhere on this forum with pictures. I did mine with the engine/trans out of the car.

Apr 18, 2026 | 10:05 AM

#19

MB TREE

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Joined: Aug 2025

Posts: 50

Likes: 10

Tool rental

Quote:

Originally Posted by bones519

About to do the transmission mount on my 2003 C4S using the AGA tool. Would be happy to rent or sell it when I complete the job (which expect to be the next week or two). Plan to use the tool with car lifted on jack stands.

In meantime welcome any tips from others who’ve done this already.

Hello, what's your rental fee?
MB

Apr 20, 2026 | 11:18 AM

#20

dporto

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Joined: Oct 2014

Posts: 6,947

Likes: 1,298

From: L.I. NY

Quote:

Originally Posted by bones519

The main “gotcha” is to make sure you have the correct trans mount bushing (there are some that are a little too large) and that you start it straight and don’t make too many turns on either nut as the bushing enters the carrier. Once it’s far enough into the carrier it becomes obvious how many turns to make to each one (as the bushing starts to bind in the carrier the nuts become harder to turn).
*** I would recommend getting the bushing from AGA as it’s the correct size and the leading edge is beveled. Good Luck!

Apr 20, 2026 | 11:30 AM

#21

bones519

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Joined: Apr 2025

Posts: 34

Likes: 14

From: Washington DC

Quote:

Originally Posted by dporto

Much appreciated! Bought the mount from Porsche (AGA only had the Boxster mount) so fingers crossed right size. Good to know on the turns. Hope to tackle tonight!

Apr 20, 2026 | 01:54 PM

#22

dporto

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Joined: Oct 2014

Posts: 6,947

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From: L.I. NY

Basic skills will get it done! Use plenty of grease/anti-sieze (on the acme bolts as well)…

Apr 25, 2026 | 12:06 PM

#23

bones519

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Joined: Apr 2025

Posts: 34

Likes: 14

From: Washington DC

Quote:

Originally Posted by dporto

Basic skills will get it done! Use plenty of grease/anti-sieze (on the acme bolts as well)…

Thanks! ! Was able to get it done last night. Everything was pretty straightforward but took some patience and iterating with different tools. AGA must have updated the nuts included with the tool and I wasn’t able to fit a ratcheting wrench around them. Used a combination if a deep socket on stubby flex ratchet and standard box wrench (which barely had clearance to move the top nuts). But with patience it’s installed and everything's back together. Thanks for all the pointers.

With that, have an AGA tool thats now available for sale or rent.