The Challenger 3W-02-12 lift arm component 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 lift arm component 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: 3W-02-12
• Brand: Challenger
• Type: Genuine OEM lift arm component
• Fits: SA10

The restraint gear on a 2-post lift is the toothed gear that engages when the lifting arm swings in under load, locking the arm at whatever angle the tech set it to. When teeth wear round, chip, or the pawl gear that engages into the restraint gear loses its point, the arm can swing under load — and a swung arm with a vehicle on it drops the vehicle. Any restraint gear that will not positively catch the arm under light hand pressure needs to come off, whether the teeth look okay or not.

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 3W-02-13 Outer Arm Restraint Gear
• Challenger 3W-02-14 Arm Restraint Gear Shaft
• Challenger 3W-02-15 Arm Restraint Shaft Spring
• Challenger 3W-04-01A Rear Arm Assembly Sa10
• Challenger 3W-04-17 Inner Arm Restraint Gear
• Challenger 3W-04-18 Arm Stop Insert

Confirm this is the right part before you order

Lift manufacturers revise parts mid-production without changing the model name, so the same lift bought two years apart can take two different revisions of the same component. Before you order, find the model plate on the lift — on most 2-post lifts it rides on one of the columns at eye level, on 4-post lifts it is usually on a column or the power-unit side runway — and note the full model number and serial. The serial dates the lift to a production run, and that is what decides which revision fits.

If the plate is painted over or missing, take a photo of the part you are replacing next to a tape measure and send it to us. Between the dimensions, the mounting pattern, and what lift it came off of, we can almost always identify the exact part before you spend money on the wrong one.

Also inspect

• Arm pin — if you had a bad restraint gear you may also have a mushroomed or grooved arm pin
• Foot-pad rubber — intact, securely attached
• Return spring on the pawl
• Arm itself — broken welds, cracks, severe rust

A restraint gear that will not engage is a lift that is unsafe to load. Do not put a vehicle on the lift until you confirm both arms lock positively under hand pressure.

Why buy your Challenger lift arm component from Auto Lift Services

We install, inspect, and repair Challenger lifts every week — the 3W-02-12 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.
• We confirm the right part for your lift's serial and production year before you order.
• Every part ships as genuine Challenger — no aftermarket substitution unless you specifically ask for an aftermarket equivalent.

If you also need companion wear items — cables, sheaves, seals, hardware — for the same repair, use our parts lookup and we will build the whole kit for your lift so you order once and finish the job.