Straight Retrofit Adapter Assortment Kit. Popular A/C Retrofit Adapter Kit is an economical assortment: It includes 10 low side adapters and 20 high side adapters. A larger quantity of high side retrofit adapters are included for the many different R12 high side service port configurations.

All MASTERCOOL retrofit adapters includes built-in valves and caps. Popular A/C Retrofit Adapter Kit Includes: Straight Adapters with Valve Cores & Service Port Caps: (10) Low Side 1/4" (7/16"-20) x 13mm, (5) High Side 1/4" (7/16"-20) x 16mm, (5) G.M. High Flow Replacement, (10) High Side 3/16" (3/8"-24) x 16mm. Termination (Block Off) Caps: (5) 1/4"(7/16"-20), (5) 3/16"(3/8"-24), (10) R-134A retrofit information label, retrofit guidelines booklet.