OE Behr R4 A/C Compressor Clutch Pulley Mounting Hardware Kit 1977-85 Mercedes
OE Behr R4 A/C Compressor Clutch Pulley Mounting Hardware Kit 1977-85 Mercedes
OE Behr R4 A/C Compressor Clutch Pulley Mounting Hardware Kit 1977-85 Mercedes
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OE Behr R4 A/C Compressor Clutch Pulley Mounting Hardware Kit 1977-85 Mercedes

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Original Behr R4 A/C Compressor Clutch Mounting Hardware Kit 1977-85 Mercedes, 923 990 00 01


  • This is an original Behr R4 radial A/C compressor clutch pulley mounting hardware kit.

  • This is the original design where the screws hold down the outer portion of the pulley to the inner clutch assembly, and then the washer is bent over to lock the screw.

  • This is a General Motors design and was used on 1970's - 1980's GM A/C compressors also.

  • There are 2 different designs, this being the earlier the screw and cup shaped washers are separate, and I have the other design available also with one piece screw and washer, please see 923 990 00 01-1 in the eBay search.

  • The Mercedes part number on this is 923 990 00 01 and the Behr part number is 70 128 06 021

  • The Delco Air Conditioning part numbers on these are 6556658 screws, and 6556660 cup washers, 6 of each.
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