4 post lift parts are the wear items on drive-on four-column vehicle lifts – lifting cables, sheaves and pulleys, safety lock ladders, drive-off ramp hardware, wheel chock components, and (on commercial lifts) rolling jack parts. Whether the lift is a home garage storage 4-post or a commercial 40,000-pound heavy-duty, this page walks through what fails, what to order, and how to identify the exact 4 post lift parts number for your specific lift.
Rotary, Challenger, Forward, BendPak, home and commercial. In stock ships same day.
What is different about 4 post lift parts
4 post lift parts wear differently from 2-post parts because of how the load path works. On a 4-post, the vehicle sits on runways and the load distributes across four columns. Instead of the arms and cable-driven-carriage failures you see on 2-posts, 4-post wear shows up in the cables that drive the platform, the sheaves and pulleys those cables ride over, and the safety lock ladders that catch the platform at each stop position. If you know the symptom, matching to the right 4 post lift parts SKU is straightforward.
The three most-replaced 4 post lift parts
1. Lifting cable sets
By volume, the number-one wear item is the lifting cable. Every 4-post uses either a cable-driven platform (home storage lifts, most commercial 4-posts up to 14,000 lb) or a hydraulic-cylinder-driven platform with cable-equalized sync (heavier commercial 4-posts). Both use cables that stretch and fatigue over years of use. Replace as a matched set, not individually. Any broken strand is an immediate take-out-of-service condition per ALI.
2. Drive-off ramps and wheel chocks
The ramps that let a car drive up onto the runway (and drop down to become wheel chocks once the car is at height) take a beating. They get kicked, scraped, and eventually bent. Replacement ramp hardware is one of the more common 4 post lift parts orders.
3. Runway-end stops and safety catches
The physical stops at the end of the runway prevent a driver from driving off the front. Plus the safety lock ladders that catch the platform at each height. Both are safety-critical.
Between those three families, roughly 70 percent of the 4 post lift parts orders we ship are covered.
Rolling jack accessories – a separate parts topic
If your commercial 4-post has a rolling jack accessory (the piece that rolls between the runways to lift wheels off for tire, brake, or suspension work), its cylinders, pump, wheels, jaws, and pad adapters all have their own service pattern and parts numbers. Mention on the call that you have a rolling jack and we will make sure we pull rolling jack 4 post lift parts too, not just base lift parts.
Common 4 post lift parts by brand
Rotary 4 post lift parts
SM122, SM140, SM220, SM301, R544, R550, and the home CL4P7/CL4P9 lineup. Rotary is our deepest-stocked 4-post parts brand. Top items: cable kits, sheave assemblies, lock ladder sets, drive-off ramps.
Challenger 4 post lift parts
LE10, LE12, CL4P family, and the 44000-series heavy-duty. Different numbering than Rotary. Common orders: cable sets, safety lock ladders, ramp hardware.
Forward 4 post lift parts
Forward CL4P series. Sister brand to Rotary, many parts cross. Bring the model and serial and we will look up either brand’s number.
BendPak 4 post lift parts
HD-series 4-posts. Separate parts family. Cable sets, ramp hardware, lock components. Lead times sometimes longer than Rotary/Challenger – we tell you honestly on the call.
How to identify your 4 post lift
Data plate is riveted to one of the front outer columns, usually front-face, waist-high. Shows manufacturer, model number, serial, capacity, and often year. Snap a phone picture before you call for 4 post lift parts – having those numbers cuts the parts conversation in half.
OEM versus aftermarket 4 post lift parts
Safety-critical items – lifting cables, lock ladders, cylinder components – stick with OEM or true OEM-equivalent. The engineering tolerances are exact. A cable that is off spec will not equalize the platform correctly. A lock ladder with wrong tooth pitch will not engage cleanly. Save aftermarket for consumables (bumper pads, decals, cosmetic covers, mounting hardware).
Shipping and lead time
In-stock 4 post lift parts ship same-day when ordered by early afternoon Central time. Non-stock items come in from distributors or the factory in three to seven business days. Anything backordered we flag before you check out. Emergency shop-down situations, mention on the call.
Install and service help
Some 4 post lift parts are simple swaps (drive-off ramps, wheel chocks, cosmetic covers). Others are jobs where a mistake creates a real problem – complete cable replacement on a hydraulic-plus-cable-sync 4-post, lock ladder replacement, rolling jack cylinder swap. Our install crews handle these regularly and can quote a service visit with your parts order. Central Iowa local; outside we handle remote diagnosis-plus-shipped-parts.
What to do if you are not sure
Call 800-674-9302 with your 4-post lift model, serial number, and symptom. Send a photo of the failed part or symptom if you can. We do not push 4 post lift parts you do not need – if the fix is a $40 wheel chock instead of a full ramp assembly, we will tell you.
Wear expectations on 4 post lift parts
How long do 4 post lift parts actually last? Rough field guidance: lifting cable sets last 10 to 15 years on a home storage lift going up and down a few times a week, 5 to 10 years on a busy shop lift running many cycles per day. Sheave assemblies typically outlast the cables that ride on them, but always inspect the sheave face when you have a cable off – a worn sheave will eat a fresh cable prematurely. Lock ladders and safety catches usually last the life of the lift with basic maintenance. Drive-off ramps and wheel chocks are the highest-turn 4 post lift parts on home storage lifts because they get physically kicked and scraped.
Retrofitting older 4-posts
If your 4-post is 15 or 20 years old and the manufacturer no longer produces the exact part number, we can often source a functional equivalent. Cable specs (length, end fitting type, cable diameter) are usually documented enough that we can spec a matching set from a current production line. Ramp hardware is often universal enough to cross-reference. Send the plate photo and let us look it up.
Ready to order 4 post lift parts? Give us the plate data and we confirm fitment before you pay.
Frequently asked questions
What wears out first on a 4 post lift?
Lifting cable sets by volume. Every 4 post lift uses cables that stretch and fatigue over years of use. Replace as a matched set, not individually. Any broken strand is a take-out-of-service condition.
How long do 4 post lift cables last?
10 to 15 years on a home storage lift used a few times a week. 5 to 10 years on a busy commercial lift running many cycles per day.
Do 4 post lift parts cross between brands?
Rotary and Forward often cross (sister brands). Challenger has its own parts family. BendPak is a separate family. Bring the plate data and we will confirm which catalog applies.
Can I replace 4 post lift parts on a 20-year-old lift?
Yes in almost every case. Older cable specs are documented well enough that we can pull a matching current-production cable set. Send the plate photo.
What is the rolling jack part number for my 4 post lift?
Depends on which lift and which factory jack. Mention on the call that you have a rolling jack and we will look up its own parts numbers, which are separate from the base lift parts.
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