CTA Tools 7122 Radiator Pressure Adapter, 52 mm x 2.5 mm, For GM GMC L5P Diesel Right-Hand Threaded Tank Cap

CTA Tools 7122 Radiator Pressure Adapter, 52 mm x 2.5 mm, For GM GMC L5P Diesel Right-Hand Threaded Tank Cap

• CTA Tools 7122 Radiator Pressure Adapter is a 52 mm x 2.5 mm cooling system test adapter designed for GM and GMC L5P diesel applications. Verified manufacturer details confirm it fits the right-hand threaded vented side tank cap and uses center core O-rings to seal the vent port for proper pressure testing.
• Features:
  • 52 mm x 2.5 mm adapter size matches the published CTA specification for the intended cooling system test connection.
  • Right-hand thread design is made for the vented side tank cap on L5P diesel applications, helping avoid mismatch with the separate left-hand cap location.
  • Center core O-rings seal off the tank vent port to support proper radiator pressure testing.
  • Designed for GM and GMC L5P diesel cooling system service where the right-hand threaded tank cap adapter is required.
  • This adapter is intended for specific GM and GMC L5P diesel cooling system applications, not as a general universal pressure test adapter.
• Specifications:
  • Manufacturer: CTA Tools
  • Part Number: 7122
  • MPN: 7122
  • UPC: 053001071227
  • Product Name: Radiator Pressure Adapter - 52 mm x 2.5 mm - GM GMC
  • Product Type: Radiator Pressure Adapter
  • Size: 52 mm x 2.5 mm
  • Thread Direction: Right-Hand
  • Seal Type: Center Core O-Rings
  • Compatible Systems / Fitment: GM and GMC L5P diesel engine cooling systems with the vented side tank cap.
  • System Compatibility / Application: Designed for the right-hand threaded vented side tank cap on GM and GMC L5P diesel engines for radiator pressure testing.
• The Radiator Pressure Adapter can also be referred to as radiator pressure tester adapter, cooling system pressure adapter, 52 mm x 2.5 mm pressure adapter, GM GMC radiator test adapter, and L5P diesel pressure test adapter.

CTA Tools manufactures specialty automotive service tools for professional technicians and repair facilities. The brand focuses on diagnostic, maintenance, and vehicle-specific service tools across automotive and heavy-duty applications.

Q: What vehicles or engines is CTA7122 designed for?
A: Verified CTA information states this adapter is designed for GM and GMC L5P diesel engine cooling systems that use the right-hand threaded vented side tank cap.

Q: Does this adapter fit both tank caps on the L5P system?
A: No. CTA states this adapter is for the right-hand threaded vented side tank cap. The top non-vented cap uses a different left-hand threaded adapter.

Q: What is the purpose of the O-rings on the center core?
A: CTA states the O-rings seal off the tank vent port so the cooling system can be tested properly during pressure testing.

Q: Is this a universal radiator pressure adapter?
A: No. Verified manufacturer information shows it is designed for a specific GM and GMC L5P diesel cooling system application with a 52 mm x 2.5 mm right-hand threaded cap connection.