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Back order – expected to dispatch by Fri 4 Dec (usually 6–18 working days)
Mastercool 91337 is a valve-core repair kit for R12, R134a and R1234yf automotive A/C service.
- 0377-001: Standard access valve core, 20 pcs
- 0378-001: GM large-bore valve core, 10 pcs
- 0531-001: R134a/R1234yf JRA high/low import valve core M6, 10 pcs
- 0769-001: R134a/R1234yf Eaton SSV high-flow valve core M10, 5 pcs
- 0768-001: R134a/R1234yf Eaton SSV high-flow valve core M8, 5 pcs
- 81290: R12/R134a/R1234yf valve-core remover/installer, 1 pc
Designed as a replacement-core assortment for compatible valve-core removers and installers.