Imperial 21H 21L Automotive Couplers

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Imperial Automotive Couplers for R134A


The set of couplers offer you the best convenience to attach the manifold hoses onto the Auto/Car AC R134a system during the diagnosis, charging or evacuation working. Design is the advantage of this coupler connector, easy to install and use and will last a long time. It can be connected with hoses quickly and easily. This pair is needed between the car AC service ports and the Manifold set or any service tools.

Imperial® is a world-renowned brand of specialty tools for HVAC/R service, tube working, electrical, automotive and industrial applications.


  • 14 mm female thread connection.
  • Quick connect/disconnect valve actuation eliminates venting.
  • Colour-coded knobs for high/low connections.
  • Integral safety sleeve prevents accidental refrigerant venting under all operating conditions.
  • Provides maximum flow without damaging service port.
  • Meets current SAE-J639 specifications.


1 x 21L Low Side Service Coupler
1 x 21H High Side Service Coupler


  • Brand: Imperial
  • MPN:  21H / 21L
  • Country of origin: USA
  • Fitting: R134A
  • Weight: 0.500 KG.


Additional information

Available Options

21-L Low side, 21-H High side