The Rotary FJ7813-1 replacement part is the direct replacement for the Rotary lift it came off of. Cross-referenced as ALS-7504-55, it is the genuine Rotary part — same part number, same fit, and same working specification as the one already on your lift. Ordering the Rotary replacement part 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: ALS-7504-55
- Brand: Rotary
- Type: Genuine OEM replacement part
- Fits: SPO15, SPO15 300 Series, SPO18, SPO18 300 Series
- Lift type: 2-post lift
We are not a catalog that happens to list lift parts — our field techs install, inspect, and repair automotive lifts every week, and the parts on this site are the ones that come off our own service trucks. That changes what you get with the order. When you are not sure this is the right part, you can send a photo of your lift’s data tag and the failed part and get an answer from someone who has had that exact assembly apart. And when you hit something mid-job that the manual does not cover, the phone gets answered by people who have been under the same lift with the same wrench.
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.
- Lock Kit - Rotary FJ5125
- Clip - Rotary FC5141-16
- Retainer Angle for FC5269 - Rotary FC5270-22
- Base Structure for FC5277, FC5278, FC5279 - Rotary FC5277-2
- Strip Grommet - Rotary FC5277-32
- Shim Kit - Rotary FA5129
Ordering the right revision
Before this goes in the cart, grab two things off your lift: the model number and the serial number, both on the manufacturer's plate. The serial matters more than most people expect — lift makers revise components between production runs without renaming the lift, and the run your serial falls in determines which revision of this part is correct.
If you are working from a failed part rather than a plate, measure what you have and photograph how it mounts. Send that to us along with the lift brand, and we will check it against the same parts breakdowns our own techs use in the field before you commit to the order.
The habit our techs are trained into applies here: when you finish a repair, run the lift through full cycles — all the way up, onto the locks, all the way down — and watch and listen the whole way. Leaks, rubbing, scraping, and locks that engage late all show themselves in the first three cycles if you are paying attention, which is a much better time to find them than under the next customer vehicle.
If you get into the job and find more wrong than you expected, stop and reassess rather than improvising a way through — call us if you want a second opinion. Half-finished lift repairs are more dangerous than the original failure, because now the lift looks fixed.
Why buy your Rotary replacement part from Auto Lift Services
We install, inspect, and repair Rotary lifts every week — the ALS-7504-55 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 Rotary — 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.
About this fj7813 slider block
The fj7813 slider block is a direct-fit replacement engineered to restore original manufacturer performance on the lift model it services. Every piece we ship carries the exact dimensional and material specifications the OEM published for that application. Fitment on this component is critical: it interfaces with adjacent hardware in ways that any deviation from spec can drive premature wear on nearby parts or trigger the lift's mechanical safety systems into an unexpected condition. Shops that source this from us instead of a generic aftermarket substitute consistently report zero fitment issues on first-time installation.
Technical specification & installation notes
Torque and installation notes for this component follow the manufacturer's service manual. Where a torque value is called out, use a calibrated torque wrench and follow the tightening sequence the manual publishes for that fastener location — many lift assemblies require star-pattern or crosswise tightening to distribute load evenly. Skipping that step is one of the most common reasons a correctly-sourced fj7813 slider block still ends up needing to be re-serviced within a year. Our tech line at 800-674-9302 will walk your installer through the procedure if the shop does not have the current service manual on hand.
Shipping & ordering
Shipping runs 3-5 business days on standard ground to the lower 48 states. Expedited overnight and two-day options are available; call 800-674-9302 before ordering to quote expedited freight. We stock the fj7813 slider block in Iowa and ship same-day for orders confirmed before 2 PM Central. Orders that come in later than that or on a Friday afternoon pick up on the next business day. A tracking number gets emailed to the address on the order the moment the package leaves our dock.
Warranty coverage
Every fj7813 slider block sold through Automotive Lift Services carries a one-year manufacturer-defect warranty. If it fails within that window due to a defect in material or workmanship, we replace it at no charge. Damage from improper installation, use outside the lift's rated capacity, side-loading, or modifications to the parent lift are not covered. The warranty is documented on your original order receipt — retain that record for the coverage period. To submit a warranty claim, contact us with the order number and a photo of the failure at [email protected].
Cross-reference & fitment
Alternate applications for the fj7813 slider block sometimes exist. Where a common part fits multiple lift models across a manufacturer's catalog, cross-reference sheets show the compatible models explicitly. If you are consolidating parts stock and want to know which of your lifts the piece covers, email the request to [email protected] with a list of the lift models in your bay — we return a compatibility grid showing which lifts accept the replacement and which need a different number.
Questions about the fj7813 slider block? Call our parts desk at 800-674-9302 or email [email protected]. We ship nationwide from our Iowa warehouse and answer fitment questions within one business day.
Slider Block - Rotary FJ7813-1
Parts that fit your lift
This Rotary part fits the lift models below. Click your model to see every part that fits it — handy for grabbing the wear items that usually go at the same time (cables, sheaves, pins, locks).
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