30% off
New arrival

JOST Fifth Wheel Air Release Cylinder Kit SK75015-05


Sale price $339.92 Regular price $485.60
Shipping calculated at checkout.

Pickup available at Wall

Usually ready in 24 hours

Description

The JOST SK75015-05 is a genuine, heavy-duty factory OEM replacement fifth wheel air release cylinder kit engineered to deliver reliable pneumatic actuation for commercial truck couplings. This stainless steel cylinder seamlessly converts compressed air from the tractor's air brake system into a mechanical pulling force, effortlessly retracting the release handle. By replacing manual pulling, it minimizes operator strain and allows drivers to safely actuate the hitch locking mechanism right from the cab. Fabricated with durable, lightweight premium metallurgy, this assembly avoids trailer drop or accidental uncoupling under immense hauling stress, making it an essential security standard for long-haul semi fleets. [1, 2]
⭐ Key Features & Benefits
  • Cab-Actuated Air Operation: Allows seamless, pneumatic uncoupling from the comfort of the driver's seat, eliminating manual physical strain. [1]
  • Integrated Pressure Relief Valve: Built with a factory-calibrated safety valve to provide absolute pneumatic control and stop dangerous over-pressurization. [1]
  • Built-In Upshock Cushioning: Features an internal mechanical cushion that deadens impact forces, reducing structural fatigue and providing torsional relief across the linkage. [1]
  • Premium Stainless Steel Barrel: Crafted from high-durability, corrosion-proof stainless steel designed to survive constant road salt, grime, and environmental moisture. [1]
  • Complete Installation Package: Comes bundled with the vital replacement hardware—including clevis pins, washers, and cotter pins—for a comprehensive overhaul. [1]
🔧 Uses / Applications
  • JOST Fifth Wheel Assemblies: Serves as the standard direct-replacement air cylinder for top-plate standard release linkages and slider frameworks.
  • Commercial Semi-Tractors: Fits major regional haulers, line-haul fleets, and heavy-duty trucks integrated with pneumatic automated fifth-wheel disconnect setups.
  • Drop-and-Hook Operations: Ideal for high-frequency fleet environments that demand fast, safe, and continuous trailer swapping.
  • Corrosive Air Environments: Optimized to perform consistently inside under-chassis areas exposed to severe winter weather and highway chemical washdowns. [1, 2, 3]
📊 Technical Specifications
Specification Detail
Part Type Fifth-Wheel Release Air Cylinder Kit
Position Fifth-Wheel Top Plate / Release Linkage
Part Number SK75015-05 (Also matches SK7501505)
Material Stainless Steel Housing / Heavy-Duty Reinforced Seals
Compressed Length 14.937 inches (379.4 mm)
Extended Length 25.25 inches (641.4 mm)
Air Port Size 1/8 inch NPT
Condition Brand New
Installation Direct-Fit Replacement
🔄 Cross‑Reference / Interchange Table
Manufacturer Equivalent Part Number
JOST (OEM / Primary) JOST SK75015-05, SK7501505
Automotive Interchanges JOSSK75015-05, JOSSK7501505, JSTSK75015-05
Fleet Distributors KP7501505, 1770SK7501505
Sampa 502757
Additional Notes Confirm air line fitting orientation and clean the slider track layout thoroughly before bolting down the replacement clevis pins.

Disclosure Policy

This product was acquired by Freeman Liquidators from a sale of merchandise subject to a commercial insurance loss. Freeman Liquidators is a secondary seller of products, is not affiliated with or sponsored by the manufacturer of the products and is not a manufacturer authorized seller of the products. Sale of this product by Freeman Liquidators is not subject to the policies of the manufacturer. Any warranty offered by the manufacturer is not available to you as the purchaser.

All products are NEVER USED but external packaging will have damage. Some items may be placed into other packaging to ensure safe shipping. All items are opened for inspection prior to shipment to ensure the best quality of products. Freeman Liquidators guarantees your satisfaction. If you are not completely satisfied with a purchased product, within 30 days from the date of purchase, return the product in its packaging and Freeman Liquidators will fully refund your money.

Delivery and Shipping

Shipping is automatically calculated at checkout.

In store pickup is sometimes the only option. These products are noted as such in our listings.

Some items have been set up so that they require a shipping quote.  Please fill out the appropriate form on the product's page and we will respond within 24-48 hours with a freight quote.  

What we ship is by best carrier, some products prepaid and others not, due to our large variances in product lines, physical sizes and weight.

At checkout you will be prompted for shipping alternatives dependent on these parameters. Products which fit standardized packaging may also have calculated shipping costs by weight and volume on our website.

In all cases our staff audits for the best shipping cost and if necessary will contact our customer with recommendations.

Freight/Palleted items that are not accepted by the recipient or are sent back to us due to undeliverable address may be refunded, but the return shipping fees will be deducted from the overall amount of refund.

All returned items are subject to a 10% handling fee.

JOST Fifth Wheel Air Release Cylinder Kit SK75015-05

Payment & Security

Payment methods

  • American Express
  • Apple Pay
  • Bancontact
  • Discover
  • Google Pay
  • iDEAL Wero
  • Mastercard
  • PayPal
  • Shop Pay
  • Visa

Your payment information is processed securely. We do not store credit card details nor have access to your credit card information.