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Aluminium compression block-off fitting, 16 mm outside diameter, includes clamp and self-tapping screws

SUR&R Auto Parts

SUR&R Auto Parts Compression Block Off 16mm coupling

SKU CH-5AV5-77ADR

A 16 mm aluminium compression block-off fitting for automotive A/C lines, supplied with clamp and self-tapping screws

  • Blocks A/C lines during service with 16 mm compression seal
  • Aluminium construction resists corrosion in refrigerant environments
  • Self-tapping screws and clamp included for immediate installation
  • Designed for 52HG65 adapters ensuring correct fit
  • Single-piece kit keeps toolbox organised and ready

Automotive A/C 16mm Block-Off

The SUR&R Auto Parts Compression Block Off seals a 16mm outside-diameter A/C line. It is a single-piece aluminum fitting supplied with a clamp and self-tapping screws for immediate installation. Professional technicians and DIY owners use it to cap off unused ports during service or system modification.

Replaces open ports during service

This block-off replaces an open or leaking 16mm connection on automotive A/C lines and adapters. The jump is worth it when a permanent, tool-tight seal is required and the line will not be reconnected. It eliminates refrigerant loss without the need for brazing or specialised tooling.

Fits 5/8-inch aluminum lines

The fitting clamps directly onto 5/8-inch aluminum A/C tubing and secures with the included hardware. It frees up the technician from carrying brazing equipment and removes the need for a matching coupler. No other components are required to complete the seal.

Highlights

  • Blocks A/C lines during service with 16 mm compression seal
  • Aluminium construction resists corrosion in refrigerant environments
  • Self-tapping screws and clamp included for immediate installation
  • Designed for 52HG65 adapters ensuring correct fit
  • Single-piece kit keeps toolbox organised and ready

Specifications

BrandSUR&R

Questions about this item

Will the 5/8 in outside diameter fit my existing A/C line?

The block off is sized for a 5/8 in outside diameter line; verify your tubing measures exactly 16 mm before ordering.

Do I need special tools to install the self-tapping screws and clamp?

Standard hand tools are sufficient; the common mistake is over-tightening the clamp before the screws fully seat.

How often should I replace the aluminum block off or its clamp?

Inspect the aluminum block off and clamp at every A/C service; replace if corrosion, cracking or stripped threads appear.

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