Mastercool
AC O-Ring Kit, HNBR Type, R134a Compatible - Mastercool 91339 - GMT400
AC O-Ring Kit, HNBR Type, R134a Compatible - Mastercool 91339 - GMT400
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AC O-ring kit, HNBR type, R134a compatible, for the Chevrolet/GMC C1500.
Part numbers
Mastercool 91339.
Fits
Universal, all common AC fitting sizes on this platform.
Why it matters
Old rubber O-rings harden and leak with age, HNBR material resists R134a and both PAG and Ester oils properly, unlike the original nitrile seals designed for R12 and mineral oil.
What you get
270 assorted O-rings across the common AC fitting sizes.
Give us your VIN if you're not certain on fitment, we'll check it before anything ships.
Description
AC O-ring kit, HNBR type, R134a compatible, for the Chevrolet/GMC C1500.
Part numbers
Mastercool 91339.
Fits
Universal, all common AC fitting sizes on this platform.
Why it matters
Old rubber O-rings harden and leak with age, HNBR material resists R134a and both PAG and Ester oils properly, unlike the original nitrile seals designed for R12 and mineral oil.
What you get
270 assorted O-rings across the common AC fitting sizes.
Give us your VIN if you're not certain on fitment, we'll check it before anything ships.
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