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Coffin arm original part numbers Assistance

jayessdoubleu

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Joined
24 Oct 2023
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13
Hi again, so got the rear springs sorted for my 997.1 gt3, thanks to all who helped. I'm now onto rear coffin arms and engine mounts. The coffin arm original part numbers are 99733104192 and 04292, left and right. Porsche are quoting 98133105302 saying the part has gone through 4 part number changes but I'm not convinced. I'm guessing there is no longer a left and right but can anyone confirm the newest part number? Anyone order a pair recently?

As for engine mounts, I'm sticking with stock due to reading about possible knock sensor issues but boy are they pricey for what they are! Part number l have is 98037535103, can anyone confirm?

Cheers,

John.
 
Last edited by a moderator:
it's very normal for part numbers to update over the years

stick with OEM engine mounts, they will be fine, 98037535103 looks like the part but ask the parts desk to confirm
 
99733104192 and 99733104292 are for an RS version, and are handed left & right. Standard GT3 is the 98133105302 and both are the same. Is yours an RS M004? Where did you get the number from?
 
99733104192 and 99733104292 are for an RS version, and are handed left & right. Standard GT3 is the 98133105302 and both are the same. Is yours an RS M004? Where did you get the number from?
Thanks for the clarity! l got the numbers from the parts list linked to the site but the control arm does have a few part numbers associated without much explanation! Document GT3_2_KATALOG on pages 76/77.
 
The semi solid mounts (not solid)
I did look at alternatives from Function First, Renline and RSS but came across some alarming videos that categorically stressed OEM. I was still tempted by RSS 624 tarmac but think I'll stick with OEM, despite the cost! Like every other year, it's going to be another expensive one! 🤣🤣🤣
 
Alarming videos on what, semi solid or solid engine mounts? I’m not aware of any issues with the RSS semi solids
Sorry, maybe alarming was the wrong word. It was on Rennlist, they were testing various engine mounts while on a dyno. It clearly showed a reduction in torque and bhp until they fitted OEM engine mounts. It was enough to convince me, true or otherwise to stick with OEM. Hope that helps clear it up.
 

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