We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Small silver aluminium compression fitting with 8mm outside diameter

SUR&R Auto Parts

SUR&R Auto Parts AC8M Compression Fitting 8mm

SKU CH-637D-HZ87C

An 8 mm aluminium compression union for automotive A/C lines, supplied as a single piece

  • Aluminium construction resists corrosion in A/C systems
  • Compression union design seals 5/16 in lines without flare tools
  • Single-piece pack supplies the exact fitting needed for a repair
  • Automotive A/C application focus ensures compatibility with 52HG53 components
  • New condition guarantees clean threads and uncontaminated sealing surfaces

Automotive A/C Compression Union

This SUR&R compression fitting is designed for automotive air-conditioning service. It connects A/C lines and adapters using a compression union configuration. The aluminium construction provides corrosion resistance for refrigerant systems. Supplied as a single piece for targeted repairs.

Replaces worn or leaking OEM fittings

Use this union when an original fitting shows signs of leakage or damage during A/C system maintenance. The jump is worth it when the existing connection cannot be resealed reliably. Compatible with 52HG53 components for direct substitution.

Suits technicians servicing 5/16 in aluminium lines

This fitting suits workshops repairing automotive A/C circuits with 5/16 in outside-diameter aluminium tubing. Buyers who need a different tube diameter, a different material or a multi-piece kit should look at something else.

How it compares

Measured against everything we stock in Hose Fittings, Adapters & Clamps, at today’s prices. Recalculated every night.

Price $20.99
Pricier than about 55% of the 2,955 comparable items (median $17.99).

Specifications

Product
Brand nameSUR&R

Questions about this item

What outside-diameter line does the 5/16 in compression fitting seal?

The fitting is sized for a 5/16 in outside-diameter line, matching the 8 mm tubing used in automotive A/C systems.

How do you install the union without damaging the aluminum body?

Slide the nut and ferrule onto the clean tube, push the tube fully into the union, then tighten the nut by hand plus one wrench turn; over-torquing cracks the aluminum.

When should the aluminum compression union be replaced?

Replace it if the sealing face shows corrosion, the ferrule is deformed, or refrigerant leaks appear at the joint during a pressure check.

More in Hose Fittings, Adapters & Clamps

Similar items