Fuel Lines & Transmission Cooler Lines

Fuel line and transmission cooler line failures shut a machine down fast, and a replacement that does not match the fluid just fails again. At Greenshields Industrial Supply, we build and repair both to spec at our Everett shop, sized to the fuel or the transmission fluid your equipment runs. We serve Snohomish and King County crews, from a weeping fuel line hose to a full cooler line rebuild. Bring the failed line, or just the measurements off it. We read the fluid, the pressure, and the ends before anything gets crimped. This counter has matched hose to fluid since 1953, so the wrong-liner leak never leaves with you.

Fuel Lines Built and Repaired to Spec

The fluid comes first. Gasoline, diesel, and today’s ethanol blends each attack rubber differently. A hose that shrugs off straight gas can harden and crack on E85. Fuel line hose built to SAE J30 comes in grades matched to that duty, from low-pressure carbureted work up to fuel-injection service. Tell us what you run. We point you to the right grade.

Pressure is the other half of the call. A carbureted supply line sees only a few psi, while a fuel-injection feed can push 40 to 60 psi or more. A low-pressure hose on an injection circuit invites a weep or a blow-off down the road. We size the fuel line to the system it feeds.

Already lost a line? Our fuel line repair and fuel line replacement work starts with the failed part on the counter. We read the inside diameter, the length, and the end style, then build fuel lines that match your ports and your fluid. With your specs in hand, most swaps come together fast at the bench.

Braided and Stainless Steel Fuel Line

For engine bays that see heat, abrasion, or a cleaner look, a braided fuel line is the step up. Steel braid over the core holds pressure that soft rubber gives up on, and it shrugs off the rub and crush that wears a plain cover through in a season. A stainless steel fuel line adds corrosion resistance for salt air and washdown bays.

We stock stainless steel braided fuel line and the hose ends built to seat on it. Braid is not a cure-all. The core still has to suit the fuel, so a stainless braid over the wrong liner buys you nothing on an ethanol blend. The construction details, layer by layer, sit on our stainless steel braided hose page if you want the full picture. Grade choice matters too, and our rundown on picking hose for military and marine service explains when 316 is worth the extra money over 304 in corrosive air. A few hydraulic hose protectors anywhere the line drags on metal keep the cover intact a lot longer.

Building your own? A braided fuel line kit bundles the hose and the ends together, ready to bolt on. For in-house work, the counter carries hose assembly tools for cutting, skiving, and crimping your runs. New to it? Our guides on making a hydraulic hose and swapping a hydraulic hose walk through each step.

Transmission Cooler Lines and Cooler Hose

Every automatic runs transmission cooler lines that move hot fluid out to the cooler and back. That fluid runs hot. It also pulses with every shift, so heat and vibration wear these lines out faster than most owners expect. A generic hose is a gamble on this circuit.

Built to SAE J1532, transmission cooler hose is made for this exact duty. The standard rates it for automatic transmission fluid, a 300 psi working class, and types that hold up to 302 degrees F. We match your transmission cooler line by inside diameter, length, and end type. That holds whether the run uses hard line, hose, or a combination. Some searches for a transmission coolant line land here too, and the answer is the same. We size the transmission cooler hose to your ports and your fluid so the joint seals and stays sealed.

Transmission Cooler Line Repair

Same counter routine covers transmission cooler line repair. Bring in the leaking line. We match a replacement to what you were running. A failed cooler line often shows up as a slow drip under the truck or a fluid level that keeps dropping. Catching it early protects the transmission from running hot. Take the pressure off the circuit before you disconnect the old line. We build the new transmission cooler line to length with the correct ends, then pressure-check the crimp so your transmission cooler line repair holds the first time.

Why Order Fuel and Cooler Lines from Greenshields

Online sellers hand over a length of hose and call it done. You sort the ends, the fluid rating, and the fit yourself. We settle all of that at the bench, sized to your system before the crimper touches it. Seven decades on this counter means we understand your setup quick and get you the right part without a second trip.

Under one roof you get fuel line, transmission cooler hose, braided fuel line, and the gear to build your own. Not sure whether you even need braid? We will tell you straight when plain rubber does the job for less. Take a look through our hose lineup, or come see the crew at the hydraulic hose shop for a custom build. Phone 425-259-0111 or use our contact page with your dimensions and working pressure. We will spec it and crimp it.