Description
An air conditioning hose is judged by what it does not let through. Refrigerant molecules are small, and a hose with the wrong liner leaks them slowly enough that the system looks fine for a season and then loses cooling capacity for no obvious reason. This is a barrier hose: a fabric-reinforced synthetic rubber construction with an inner liner rated to SAE J2064, the specification that governs refrigerant permeability in mobile A/C lines.
The reinforcement layer is what separates a serviceable hose from a disposable one. Two plies of braided fabric sit between the liner and the cover, which stops the hose from ballooning when the system reaches high-side pressure and stops it from kinking at tight radii. The cover is ozone and abrasion resistant, so a line routed near an exhaust manifold or through a bulkhead grommet does not crack at the contact point after two summers.
Six bore sizes are stocked, from 8mm to 18.5mm inner diameter, which covers everything from a small evaporator return line to the main suction run on a commercial unit. Wall thickness is held at 3.5mm with a 0.4mm tolerance, so the hose crimps predictably with standard fittings and does not need a special collar. The interchange reference is 04568 and the manufacturer part number is R134a for a reason: this is formulated for R134a systems, not for legacy R12 or for CO2.
The hose is sold by the metre, priced per metre, and cut to the length you order. That matters because most failures happen at the fitting, and a pre-made assembly with the wrong end is worse than a length of correct hose and a crimper. Order the bore you need, order the length you need, and leave enough slack for engine movement without a loop that traps oil.
A refrigerant system does not fail loudly. It fails a gram at a time.
What Makes It Different
- ✦Barrier liner rated to SAE J2064 for low refrigerant permeability
- ✦Two-ply braided fabric reinforcement resists ballooning and kinking
- ✦Ozone and abrasion resistant outer cover for engine bay routing
- ✦3.5mm wall with 0.4mm tolerance for predictable crimping
- ✦Six bore sizes from 8mm to 18.5mm inner diameter
- ✦Formulated for R134a systems, sold and priced by the metre
Technical Specifications
- ApplicationMobile and stationary R134a air conditioning lines
- ConstructionFabric reinforced synthetic rubber, barrier liner
- SpecificationSAE J2064
- Inner diameters8, 10, 11.5, 13, 15.5 and 18.5mm
- Wall thickness3.5mm, tolerance 0.4mm
- Outer diameter ref15.0mm on the mid-bore sizes
- Interchange number04568
- Manufacturer partR134a
- Unit of salePer metre, cut to ordered length
- ColourBlack
- TemperatureContinuous service across automotive engine bay range
Where It Earns Its Place
Auto shops use it to rebuild lines that a dealer only sells as a complete assembly at four times the price. Refrigeration technicians use the small bores for instrument and display cooler repairs. Farmers and fleet mechanics keep two or three metres of each bore on the shelf, because a burst suction hose in harvest week costs more in downtime than the entire stock of hose. Boat owners use it for cabin cooling retrofits where the run is long and a single leak means pulling the whole line again. Hobbyists restoring a 1990s car use it because the original part numbers are gone and the bore and the specification are what actually matter.
The EastSupplier Promise
Sourced directly from vetted manufacturing partners, inspected before dispatch, and priced without distributor layers. If the item arrives outside specification, we replace it or refund it. Every listing on this store is curated by a human buyer, not bulk-imported and abandoned.
Questions Buyers Actually Ask
Q: Is this hose compatible with R12 or R1234yf?
It is formulated for R134a. R12 systems use a different lubricant chemistry, and R1234yf runs at different pressures and often requires a different liner. Use the hose matched to your refrigerant.
Q: Can I crimp this with standard fittings?
Yes. The 3.5mm wall with a 0.4mm tolerance is sized for standard barbed and beadlock fittings and standard crimp collars. Use a proper A/C crimper, not a hose clamp, because a clamp will not hold system pressure.
Q: How much should I order?
Measure the run and add 10 to 15 percent for routing and engine movement. Do not add a large loop, because a low point traps oil and starves the compressor.
Q: Is the price for one metre or for the whole roll?
The price is per metre. Increase the quantity to order the length you need and it is cut to that length.
Q: Does the hose come with fittings?
No. It is supplied as hose only, so you can fit the ends your system requires. This is deliberate, since a pre-made assembly with the wrong end cannot be reused.
Q: What pressure does it hold?
It is rated for R134a system pressures with a substantial safety margin, which is what the SAE J2064 burst and permeability tests verify. Do not use it on CO2 systems, which run far higher.
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