Can I use this hose for R134a refrigerant?

Yes, all our hoses are compatible with R134a and other common automotive refrigerants.

Do you sell ac accessories and tools?

Yes! Check out our AC accessories and tools for more solutions.

Bulk Automotive AC Hose | Cut-to-Length Barrier Hose | Fast Shipping

Q: What is the difference between standard and reduced barrier AC hose?

Standard barrier hose is thicker and more rigid, while reduced barrier hose offers flexibility for tight spaces without sacrificing performance.

Factory AC hose crimped to a bad section, rubbing through on a frame rail, or simply discontinued for your year and model? Our bulk automotive AC barrier hose lets you cut exactly what you need — no more paying for a full line assembly when only 6 inches of hose failed. Available by the foot or full roll in every standard AC hose size, with same-day shipping on most orders.

The AC Hose That Shops and DIYers Actually Spec By the Foot

Whether you're building a custom AC line from scratch, splicing a repair with our EZ Flex AC Line Repair Kits, or re-routing a line away from a heat source, this is the same high-pressure barrier hose we use in our own manufactured line sets — built to SAE J2064 standards and compatible with both R134a and R1234yf refrigerant systems.

Standard vs reduced barrier automotive AC hose size comparison

Standard Barrier vs. Reduced Barrier: Which Do You Need?

This is the question we get most often, so here it is straight:

Standard Barrier Hose has a thicker wall construction with a full-thickness HNBR barrier layer. It's stiffer, which makes it easier to work with when routing through open engine bays, and it's the correct spec for high-side (discharge) lines where system pressures are highest. If you're not sure which type you need, start here.

Reduced Barrier Hose has a thinner barrier layer, which makes the overall hose diameter smaller and significantly more flexible. This is the right choice when you're routing through tight chassis tunnels, around suspension components, or anywhere the stiffer standard hose won't bend cleanly without kinking. Same pressure rating — just a more compact profile.

Hose Size Guide — Match Your Existing Line

AC hose sizes follow the SAE # system based on the hose's inside diameter. Measure the outside diameter of your existing hose or fitting to confirm, then match it here:

SAE Size	Inside Diameter	Typical Application
#6	5/16"	High-side liquid line (small cars, compressor outlet)
#8	13/32"	High-side liquid line (most trucks and SUVs)
#10	1/2"	Low-side suction line (most passenger vehicles)
#12	5/8"	Low-side suction line (trucks, vans, heavy duty)
#14	3/4"	Suction line (large displacement, commercial vehicles)

What You'll Need Besides the Hose

Raw bulk hose requires fittings and a crimping method to complete a line. If you're repairing a damaged section rather than building from scratch, our EZ Flex AC Line Repair Kits include compression-style aluminum fittings that work without a crimping tool — cut out the bad section, slide the fittings on, tighten, and you're done. If you're building a full custom line, you'll need hose ends crimped by a shop with AC hose crimping equipment, or barbed fittings designed for your application.

Frequently Asked Questions

What is the difference between standard and reduced barrier AC hose?

Standard barrier hose has a thicker wall with a full HNBR barrier layer — stiffer and easier to route in open spaces, correct for high-side discharge lines. Reduced barrier hose has a thinner barrier layer making it smaller in diameter and more flexible, ideal for tight chassis routing or anywhere standard hose would kink. Both carry the same pressure rating and both meet SAE J2064 standards.

Is this hose compatible with R1234yf refrigerant?

Yes. All our bulk AC hose meets SAE J2064 standards and is compatible with both R134a and R1234yf refrigerant systems. If your vehicle uses R1234yf (most 2015 and newer models), this hose is the correct specification.

Do I need special tools to work with bulk AC hose?

To cut raw hose you need a sharp blade or hose cutter — a clean straight cut matters for a good seal. To attach fittings, it depends on the fitting type: crimped hose ends require a hydraulic or pneumatic crimping machine (typically done at a shop). If you want a no-crimp repair option, our EZ Flex Repair Kits use compression aluminum fittings that tighten with a standard wrench — no crimper needed.

How do I know what size hose I need?

Measure the inside diameter of your existing hose or the outside diameter of the fitting it connects to. AC hose sizing follows the SAE # system: #6 = 5/16", #8 = 13/32", #10 = 1/2", #12 = 5/8", #14 = 3/4". When in doubt, the high-side (smaller, liquid line) is typically #6 or #8, and the low-side (larger, suction line) is typically #10 or #12 on most trucks and SUVs.

Can I use this hose for the rear AC system on my SUV or van?

Yes, though for rear AC line replacement on specific vehicles we recommend our direct-fit Rear AC Line Sets — they come pre-assembled with the correct fittings, o-rings, and hardware for your exact vehicle. Bulk hose is best when you need a custom length or are splicing a repair into an existing line using our EZ Flex kits.

Still have questions? View our full Technical FAQ page or call 1-810-606-8088, Mon–Fri 8AM–5PM EST.