AC Clutch Replacement 1991 - ZR-1 Net Registry Forums

Bruce Hazell · 07-30-2024

Hi All,
Replaced my AC compressor last yr with a new one from Jerrys Gaskets. At a car show this weekend and ac went kaput ...it would appear that the clutch is destroyed..hopefully not the compressor too.
Anyway...Jerrys does not sell the replacement compressor WITH clutch...so I am first looking for a clutch kit to fit the 91 ZR1. There is a parts dealer in Niagara Falls who has one for a 1990 ZR1...and this is the only one I have found so far on my searches.

Anyone know if the 1990 kit will fit the 1991 compressor.
Any other suggestions??

1991 Corvette ZR-1 · 07-30-2024

I have a clutch kit in the parts bin for a future replacement. It is GPD brand part number 4321248. I believe the description for this one was that is fits the 1990 ZR-1, but as far as I know, there is no difference in pulley diameter from 90 to 95 for the AC compressor. The kit has a new magnetic coil as well, but it also will require some reworking of the electrical connections to plug in to the factory harness. So technically, this does not fit the 1990 model either as a direct drop in, without some work.

AndrewL · 07-30-2024

I went through this last year and posted this thread asking about the clutch like you have: https://zr1.net/forum/showthread.php?t=35084

I just updated that thread with how part number 4321248 worked on my 91.

07-30-2024	#1
Bruce Hazell Join Date: Sep 2021 Location: BURLINGTON,Ontario,Canada Posts: 12	AC Clutch Replacement 1991 Hi All, Replaced my AC compressor last yr with a new one from Jerrys Gaskets. At a car show this weekend and ac went kaput ...it would appear that the clutch is destroyed..hopefully not the compressor too. Anyway...Jerrys does not sell the replacement compressor WITH clutch...so I am first looking for a clutch kit to fit the 91 ZR1. There is a parts dealer in Niagara Falls who has one for a 1990 ZR1...and this is the only one I have found so far on my searches. Anyone know if the 1990 kit will fit the 1991 compressor. Any other suggestions??

07-30-2024	#2
1991 Corvette ZR-1 Join Date: Sep 2018 Location: Florida Posts: 304	Re: AC Clutch Replacement 1991 I have a clutch kit in the parts bin for a future replacement. It is GPD brand part number 4321248. I believe the description for this one was that is fits the 1990 ZR-1, but as far as I know, there is no difference in pulley diameter from 90 to 95 for the AC compressor. The kit has a new magnetic coil as well, but it also will require some reworking of the electrical connections to plug in to the factory harness. So technically, this does not fit the 1990 model either as a direct drop in, without some work.

07-30-2024	#3
AndrewL Join Date: Dec 2020 Location: Sydney, Australia Posts: 85	Re: AC Clutch Replacement 1991 I went through this last year and posted this thread asking about the clutch like you have: https://zr1.net/forum/showthread.php?t=35084 I just updated that thread with how part number 4321248 worked on my 91.