The Challenger AA8040001-SKITI seal kit 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 seal kit 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: AA8040001-SKITI
• Brand: Challenger
• Type: Genuine OEM seal kit

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.

Seals and hoses age on two clocks at once: cycles and years. A cylinder seal wears from the miles the rod travels; a hose gets brittle just sitting in shop heat and cold. Run dirty fluid and you speed both up, because grit scores the barrel and the rod and shreds seals from the inside. Most lifts that pump every day start weeping a seal somewhere in the eight-to-fifteen year range.

Related parts for this lift

The parts below are commonly ordered alongside this one — cables, sheaves, seals, and hardware wear on similar schedules, and most repairs go faster when the whole set is done in one visit.

• Challenger AA8040001 Cylinder Model 44060 8" Bore

Replacing your seal kit

Most hydraulic repairs share the same discipline: relieve pressure, keep the system clean, replace the part, then bleed the air and verify the lift holds under load. Contaminated fluid or trapped air will undo an otherwise good job. Because these parts keep a vehicle safely in the air, the full procedure is worth following start to finish. Full step-by-step: how to reseal a lift cylinder.

Find the right part for your lift

Landed here but not 100% sure it is your part? Grab the model and serial from the data plate and open our Challenger parts lookup for the visual breakdown — the manufacturer-style drawing with every item numbered so you can match yours exactly. Plate missing? our guide to finding your model number helps, and we identify lifts from photos every week if you would rather ask.

Signs of a hydraulic problem

Look under and around the whole loop for evidence, not just the obvious drip. Trace a puddle back uphill — fluid runs, so the leak is above where it pools. Check fittings, the reservoir seam, the pump-to-reservoir gasket, and the base of the cylinder. A weep that only shows under full pressure won't appear until you take the lift to max height and hold it.

Parts commonly replaced at the same time

A hydraulic repair is the right moment to handle the parts that fail alongside this one — seals, o-rings, the hose that feeds it, and fresh oil for the refill. Opening the system twice for parts you could have done together is wasted labor. We will build the seal-and-hose kit for your lift so the repair is complete in one go.

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

Hydraulic parts hold a vehicle in the air on pressure and a column of oil — respect both. Relieve system pressure before you crack any fitting, cap every open port so grit stays out, and bleed the system fully before the lift carries a load. Air in the lines is what causes a lift to drift or drop unexpectedly.

Before you order

Have the data plate in front of you when you order — model, serial, and voltage if it is a power unit. Match hose length and fitting type against the old part, and remember the job includes fresh oil and a full bleed. Not sure whether you need the part or just seals? Call and we will sort it.

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 seal kit from Auto Lift Services

We install, inspect, and repair Challenger lifts every week — the AA8040001-SKITI 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.