At a Glance
- SKU: SJ001B5DEM4VQ

Professional-grade self-contained hydraulic trailer jack for heavy tongue loads, horse trailers, livestock trailers, gooseneck trailers, dump trailers, and demanding work trailer applications.
| Specification | Detail |
|---|---|
| Part Number / SKU | SJ001B5DEM4VQ |
| Brand | Stillwell Hydraulic Products |
| Product Type | Self-contained hydraulic trailer jack |
| Lift Capacity | 10,000 lb |
| Total Travel | 26 inches |
| Operating Pressure | 3,000 PSI |
| Mounting Style | Bolt-on |
| Footplate Size | 10" x 10" |
| Mounting Bracket | 7" wide x 20" tall |
| Quantity Included | 1 hydraulic trailer jack assembly |
| Category | Details |
|---|---|
| Primary Use | Heavy-duty trailer tongue lifting and leveling |
| Typical Trailers | Horse trailers, livestock trailers, gooseneck trailers, dump trailers, equipment trailers, and work trailers |
| Fitment Method | Verify mounting bracket space, tongue clearance, jack location, electrical requirements, and trailer tongue load before ordering |
| Important Note | Fitment varies by trailer design. Confirm bracket dimensions and installation clearance before installation. |
| Feature | Buyer Benefit |
|---|---|
| Self-Contained Hydraulic System | Integrated hydraulic operation without needing an external pump or plumbing system. |
| 10K Lift Capacity | Built for heavy tongue loads and demanding trailer applications. |
| 26" Total Travel | Provides useful vertical range for varied hitch and trailer heights. |
| Manual Override Capable | Allows backup operation if electrical power is unavailable. |
| Vaquero Package Design | Purpose-built self-contained configuration commonly used for horse and livestock trailer applications. |
The Stillwell Atlas IV Vaquero is a self-contained hydraulic trailer jack engineered for heavy tongue loads, live cargo, and demanding work environments. This bolt-on 10,000 lb hydraulic jack provides 26 inches of total travel and uses an integrated 3,000 PSI power unit for controlled hydraulic lifting without requiring an external trailer pump or separate hydraulic plumbing.
Hydraulic trailer jacks are a major upgrade over hand-crank jacks when the trailer has heavy tongue weight or sees frequent hitching and unhitching. Before installing, confirm that the trailer tongue has the correct bracket space, battery capacity, wiring setup, and jack clearance.
Compatibility: Designed for trailer applications where a 10,000 lb self-contained hydraulic jack, 26" lift range, bolt-on mounting style, and Vaquero package configuration match the trailer requirements.
Vehicle / System Fit: Commonly used on horse trailers, livestock trailers, gooseneck trailers, dump trailers, equipment trailers, and other heavy-duty trailer applications.
Installation Notes: Verify tongue layout, bracket position, jack travel, footplate clearance, wiring route, battery condition, and available mounting area before installation.
Performance Insight: Hydraulic lift helps reduce manual effort compared to crank-style jacks and provides smoother controlled movement under heavy tongue loads.
Selling Brand: Stillwell Hydraulic Products
Application Reference: Horse trailer, livestock trailer, gooseneck trailer, dump trailer, and equipment trailer references describe common application types only. Fitment still depends on trailer measurements and installation requirements.
What This Means: This listing is for a Stillwell Atlas IV Vaquero self-contained hydraulic trailer jack assembly with a 10,000 lb lift capacity and 26" total travel.
Before Ordering: Verify mounting style, bracket dimensions, available clearance, wiring requirements, trailer battery capacity, tongue load, and installation location before purchase.
When replacing or upgrading a trailer jack, the biggest fitment issues are usually bracket placement, tongue clearance, battery condition, and total lift range. Measure before ordering and compare the trailer’s tongue height range to the jack’s travel.
Integrated hydraulic power unit allows the jack to operate without tying into an external pump or separate hydraulic trailer circuit.
Built for heavy tongue loads found on livestock, gooseneck, dump, and equipment trailer applications.
Provides a broad lift range for hitching, unhitching, leveling, and working across different trailer heights.
Designed for bolt-on installation when the trailer has the correct mounting area, clearance, and structural support.
Allows backup operation when electrical power is unavailable, helping prevent downtime in the field.
Self-contained package design is commonly selected for horse and livestock trailer applications where clean packaging and controlled hydraulic motion matter.
| Quantity | Item |
|---|---|
| 1 | Stillwell Atlas IV Vaquero self-contained hydraulic trailer jack assembly |
| 1 | Integrated 3,000 PSI hydraulic power unit |
| 1 | 10" x 10" footplate |
| 1 | Bolt-on mounting bracket, 7" wide x 20" tall |
| Not Included | Mounting hardware, wiring, battery cables, and installation accessories are not listed as included unless shown or stated separately. |
Selected products are added together. Review the cart and verify kit contents to prevent duplicates. Prices and discounts are determined at checkout.
Have your SKU or manufacturer part number, photos of the original part and mounting, and any critical measurements ready. Capacity, voltage, or bolt pattern can help too.
815-357-3292 · 270 E Jackson St · Seneca, IL 61360
Customer feedback summarized from Google and Yellow Pages. Dates are shown where available.
Ordered trailer repair parts repeatedly; praised fast service, careful packing, and accurate orders.
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Got the axle he needed right away, set up with a custom spring perch.
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Replacement struts brought a long-used door back to working order.
Had a trailer built to his needs at a fair price, then found parts for two other trailers in stock.
Praised the customer service after working with R&P over several years.
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Received swivel D-rings with backing plates and praised the price, correct order, and service.
The right parts arrived the first time, with fast delivery and helpful staff.
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Was pleased with a replacement trailer cord.
Noted dependable service and products across repeat visits.
Said the axle installation fit perfectly and thanked Josh and the crew.
Praised the crew’s professionalism during a difficult hitch replacement.
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Said the product description explained what would work for the trailer.
Received the item as described with very fast shipping and plans to return.
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Called it a pleasure doing business with R&P.
Was pleased with product quality, quick delivery, and an easy installation.
Was enthusiastic about the products.
Was ready to install the product on every trailer they own.
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Reported that the newly installed parts were working perfectly.
Said things went well, as they had on previous visits.
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Noted good value, careful packing, and fast shipping.
Found the team professional and easy to work with.
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Shared appreciation for the owners and their company.
Reported prompt shipping and said they would buy again.
Found R&P easy to deal with.
Praised the people and the service.
Reported a good fit, fair price, accurate listing, and quick shipping.
Received the order a day early and recommended the seller.
Described a no-hassle, professional custom-trailer purchase.
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Found the right hub covers quickly and got helpful maintenance advice.
Said R&P helped their company get back on the road after an axle problem.
Was happy with a dump-trailer purchase after comparing options.
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Found a good deal on a 16-foot dump trailer and planned to return.
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