The Challenger 104712 hydraulic fitting is the direct replacement for the Challenger lift it came off of. This is the genuine Challenger part — same fit and same working specification as the one already on your lift. Ordering the Challenger hydraulic fitting from us gets you the OEM piece that matches the lift, not an aftermarket knock-off that is close but not the same. Specifications Part number: 104712 Brand: Challenger Type: Genuine OEM hydraulic fitting The cylinder is where hydraulic pressure becomes lift. Fluid pushed behind the piston drives the rod out, the rod raises the carriage or pulls the cables, and a check valve holds it up there until the lowering valve lets it back down. It's a simple, rugged part — until the rod seal wears or the barrel scores, at which point it can't hold pressure and the lift won't stay up. A hydraulic lift that won't hold height is telling you something before it fails outright. Drift-down, a spongy feel, milky fluid — these are early warnings, and the cheap fix is now. Ignore them and a weeping seal becomes a scored barrel becomes a whole cylinder; a tired pump becomes a burned-up motor. Worse, a lift that sags under load is a safety problem, not just a maintenance one. Replacing your hydraulic fitting Rebuilding a cylinder with a seal kit is bench work: tear it down, lay the parts out in order, confirm the bore and rod aren't scored, then reassemble with the new seals lubricated and bench-test for leaks before it goes back in. The order of the seals and the condition of the barrel make or break the job. Walk through the complete guide before you crack the end cap. Full step-by-step: how to replace a car lift hydraulic hose. Find the right part for your lift If you are not sure this part matches your setup, the fastest check is the visual breakdown: open our Challenger parts lookup, pick your model, and match your part against the drawing where every item is numbered. Can't read the model plate? our guide to finding your model number shows exactly where it lives on each lift type, and we are a phone call away if you would rather have us confirm it. Signs of a hydraulic problem Fittings and washers are small but leak often. Check every copper washer on a bleeder or banjo for crush and flattening, every o-ring boss for a weep, and every flare for a hairline crack at the cone. A fitting that keeps weeping after you snug it usually needs a fresh washer or o-ring, not more torque — over-tightening cracks the flare and makes it worse. Parts commonly replaced at the same time While the system is open, take care of the companions — the seal kit, the o-rings, the feed hose, and the oil you will need to refill and bleed. It is cheaper and cleaner than reopening the system for the piece you skipped. We keep the right specs for your lift and can kit it for you. Hydraulic fluid When you refill, use the right oil: ISO-32 hydraulic fluid on most lifts, or Dexron ATF on some older designs — never a blend of the two. Your installation manual lists the correct capacity for your specific lift, so fill to that spec and re-check the level after you have cycled and bled the system. Safety notes Treat the hydraulic system as pressurized until you have relieved it. Bleed in the correct order, keep the reservoir topped so the pump never sucks air, and confirm there is zero drift at full height before returning the lift to service. A cylinder or hose that weeps today is a failure waiting for the worst moment. Before you order Hydraulic components are specific to the lift's pressure and plumbing, so order by model and serial, not by eye. For a leaking cylinder, decide between a seal kit and a full replacement first — we can help — and plan on topping off and bleeding the system when the new part goes in. Not sure this fits? Here's how to check Pull the number off your lift's model plate first — model and serial both. Manufacturers run mid-cycle revisions that keep the model name but change hardware, so two lifts with the same name on the column can take different parts. The serial is what removes the guesswork. Second check: compare the old part against this listing before you order. Length, mounting pattern, and thread sizes tell most of the story. If anything doesn't line up, or if the old part is too worn or broken to measure, call us with photos — we work on these lifts every week and can usually confirm fit from a picture and the lift's serial faster than you can dig through a parts diagram. Why buy your Challenger hydraulic fitting from Auto Lift Services We install, inspect, and repair Challenger lifts every week — the 104712 is a part we handle in the shop, not a random SKU we drop-ship. The phone answers if you have a question mid-install — call 800-674-9302 — and every part ships genuine, no aftermarket substitution unless you ask for it.
