The Challenger 16151 lock ladder 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 lock ladder 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: 16151
• Brand: Challenger
• Type: Genuine OEM lock ladder

Rust is what usually kills a lock before wear does. The pivot seizes, the return spring corrodes and weakens, and the pawl stops dropping crisply into the ladder. On a lift that lives in a damp shop or an unheated garage, the locks are often the first safety part to go — not from cycles, but from a stiff, gummed-up mechanism that no longer moves the way it has to.

A safety latch is the positive stop that keeps a raised component — an arm, a carriage, a locking device — from dropping if something upstream lets go. It's designed to do nothing at all until the moment it's needed, which is exactly why it gets ignored. A latch that's rusted, bent, or missing its spring is a latch that won't be there in the one instant it matters.

Replacing your lock ladder

Lock work usually pairs with checking the release and the leveling, since uneven clicks can come from the ladder, the pawl, the release, or stretched cables. Replace the worn parts, then adjust so every lock lands together and releases together. Chasing that timing down correctly is the whole job, and the full walkthrough covers how. Full step-by-step: how to replace a lift lock ladder.

Find the right part for your lift

The surest way to get the right part is to work from your lift's own breakdown. open our Challenger parts lookup, choose your model, and every part is mapped on the drawing with its number and price. If you cannot find the model plate, our guide to finding your model number explains where each lift type hides it, and our phone line is open if you want a hand.

Signs the locking system needs attention

Raise the lift slowly and listen. The pawls at every column should click into the ladder crisply and, on a level lift, at the same time. A pawl that clicks late, skips a tooth, or doesn't click at all is either sticking or worn. Uneven clicks across columns point to a lazy pawl, a stretched cable, or a lift that isn't level — track it down before you trust the locks.

Parts commonly replaced at the same time

Since the lift has to come down to its locks safely on both sides, service the lock hardware as a unit — latch, pawl, spring, cable, both columns. Half a repair leaves uneven engagement. We will build the full lock kit for your lift so it catches and releases together the way it should.

Safety notes

Every lift is designed to rest on its locks, not its hydraulics — which is why worn lock hardware is so dangerous. Replace latches, pawls, and release cables before they hesitate, verify both columns lock and release in step, and take any lift with an unreliable lock out of service on the spot.

Before you order

Before ordering lock parts, confirm your lift's model and serial — latch, pawl, and release-cable designs changed over the years. Replacing the lock hardware as a set on both columns keeps engagement even, so order for both sides unless you know only one is worn. Call if you need to match an older design.

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.

Why buy your Challenger lock ladder from Auto Lift Services

We install, inspect, and repair Challenger lifts every week — the 16151 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.