Best Fifth Wheel Air Cylinder for Truck and Trailer Fitment

#1 · Best Overall

1. Velvac 100101 Cylinder

• Weight: 2.96 lb

Best for: Corrosion-Resistant Cylinder.

Why it ranks #1: Lists a 2.5-inch bore, 6.75-inch stroke, 100 psi operating pressure, and 1/4-inch FTP port for a clearly specified fifth wheel cylinder.

A gold-anodized tube gives the Velvac 100101 a concrete corrosion-resistance feature, while its 21⁄2-inch bore and 63⁄4-inch stroke define the cylinder’s operating dimensions. It is a fifth wheel air cylinder with 100 psi operating pressure, suited to buyers matching those specifications to their hitch setup.

The cast aluminum front and rear covers keep the listed construction details clear, and each cover has a 1⁄4-inch FTP port for air connections. A mounting hole sized for a 17/32-inch clevis provides a specific mounting interface to check against the hitch linkage. The 100 psi operating pressure and 63⁄4-inch stroke help buyers compare operating requirements and travel with their existing cylinder before installation; the anodized tube adds the stated corrosion-resistance benefit.

Skip it if you need a cylinder identified for Holland XA-2524-R replacement; Parts Express lists that application.

The Velvac 100101 suits a buyer whose fifth wheel setup calls for its 21⁄2-inch bore, 63⁄4-inch stroke, 100 psi operation, and clevis mounting hole. Check the port and mounting interfaces against the intended installation.

Listed on Amazon as: Velvac 100101 Fifth Wheel Trailer Hitch Air Cylinder 2 1/2" Bore, 6 3/4" Stroke

#2 · Best Holland Fit

2. Parts Express Holland Cylinder

• Weight: 3.12 lb

Best for: Holland Fifth Wheel Replacement.

Why it ranks #2: Specifically replaces Holland 2524P, 401267, and 29-1405; it lists a 2.5-inch bore, 6.75-inch stroke, and end lengths.

An application explicitly limited to Holland fifth wheels makes the Parts Express cylinder a focused XA-2524-R replacement option. Its 21⁄2-inch bore, 63⁄4-inch stroke, and 100 psi operating pressure provide concrete specifications for comparing it with the Holland cylinder being removed.

Parts Express lists several replacement references—2524P, 401267, and 29-1405—alongside XA-2524-R, helping buyers identify the intended Holland fifth wheel application. The 6.750-inch stroke, 2.500-inch bore, 12.625-inch retracted length, and 19.406-inch extended length offer useful geometry for installation planning. Its gold-anodized tube is specified for corrosion resistance, and the stated 100 psi operating pressure helps establish the operating requirement.

Skip it if you need the Automann KP2524R131 for Holland XA2524R131 or Velvac 100102 replacement.

This Parts Express cylinder suits a Holland fifth wheel owner matching one of its listed replacement references and dimensions. Its application is expressly Holland-only, so buyers working on another hitch brand should select a cylinder listed for that system.

Listed on Amazon as: Air Cylinder For Holland 5th Wheels Replaces XA-2524-R

#3 · Measured Stroke Option

3. Automann KP2524R Cylinder

• Weight: 10.14 lb

Best for: Specified-Stroke Replacement.

Why it ranks #3: The listing identifies a 2.5-inch bore and 6.75-inch stroke, with stated 12.75-inch and 19.25-inch lengths for comparison.

A 63⁄4-inch stroke is the clearest defining specification of the Automann KP2524R, paired with a 21⁄2-inch bore. Those dimensions let a buyer compare its basic cylinder geometry with a fifth wheel hitch requirement before choosing this listed trailer hitch air cylinder.

Automann identifies the KP2524R as a fifth wheel trailer hitch air cylinder and lists a 21⁄2-inch bore with a 63⁄4-inch stroke. Its stated lengths are 12.75 and 19.25 inches, giving buyers two additional dimensions to compare with their existing setup when planning a replacement. The supplied product information does not identify a particular hitch series or vehicle application, so the listed measurements are the strongest supported basis for evaluating its fit.

Skip it if you require a named Holland replacement application; Parts Express identifies its cylinder for Holland fifth wheels.

Consider the Automann KP2524R when its listed bore, stroke, and lengths match the cylinder you are replacing. The supplied information names it as a fifth wheel hitch cylinder but does not specify a hitch series.

Listed on Amazon as: AUTOMANN KP2524R Fifth Wheel Trailer Hitch Air Cylinder 12.75" 19.25", 2 1/2" Bore, 6 3/4" Stroke

#4

4. Automann KP2524R131 Cylinder

• Weight: 4.3 lb

Best for: Holland Series Cylinder.

Why it ranks #4: Designed as a Holland replacement for XA2524R131 and Velvac 100102, with a 1/4-inch FTP port and 100 psi operating pressure.

Coverage for Holland XA2524R131 and Velvac 100102 replacements gives the Automann KP2524R131 a specific fifth wheel application. Its 1⁄4-inch FTP port, 100 psi operating pressure, and 21⁄2-inch outside diameter provide practical connection and size details for a replacement comparison.

The listing names Holland XA35103505, XA351UB, FW1500, and FW3500 series, narrowing the intended hitch families. A blind-eye air inlet and 1⁄4-inch FTP port describe the air connection, while the stated 100 psi operating pressure helps with system comparison. Automann also gives a 7.5-inch measurement from center hole to center hole when compressed, a useful installation dimension to compare with the cylinder being replaced.

Skip it if you need a Holland XA-2524-R replacement with 63⁄4-inch stroke specifications; Parts Express lists that cylinder.

The Automann KP2524R131 suits a buyer servicing one of its listed Holland series or replacing the named Holland or Velvac numbers. Compare its port, operating pressure, and compressed mounting measurement with the existing assembly.

Listed on Amazon as: Holland Fifth Wheel Air Cylinder KP2524R131

#5 · Best Newer Jost Slider

5. Bonbo KP7501503 Cylinder

• Weight: 3 lb

Best for: Jost Slider Replacement.

Why it ranks #5: Replaces Jost KP7501503, SK7501503, and Volvo 85112707, and is specified for compatible slider systems shipped after April 2005.

Direct replacement coverage for Jost KP7501503, SK7501503, and Volvo 85112707 gives this Bonbo cylinder a clear role: replacing a damaged or leaking slider actuator while retaining the listed locking and releasing function. Its stated application includes Volvo VNL 670 Gen 2 and Peterbilt 379 trucks.

Bonbo specifies compatibility with fifth wheel slider systems shipped after April 2005, which helps narrow the relevant installation window before selecting a replacement. The listed Volvo VNL 670 Gen 2 years are 2003–2019, and Peterbilt 379 is also named. Matching one of the listed Jost or Volvo replacement numbers connects the cylinder to the intended slider application; the product description specifically identifies worn, leaking, or damaged cylinders as replacement candidates.

Skip it if you have a slider shipped before April 2005; Outopakkle KP7501501 is listed for earlier sliders.

Choose this Bonbo cylinder when replacing a damaged or leaking post-April-2005 Jost slider actuator on a listed Volvo VNL 670 Gen 2 or Peterbilt 379. Its application is specific, so the truck and slider generation matter.

Listed on Amazon as: KP7501503 Fifth Wheel Slider Air Cylinder for Jost Volvo Peterbilt

#6

6. johntruck KP7501503 Cylinder

• Weight: 2 lb

Best for: Multi-Truck Jost Slider Fit.

Why it ranks #6: A Jost slider replacement with a 12.0-inch center-to-center measurement and listed fitment for several Volvo, Kenworth, and Peterbilt applications.

Compatibility spanning several named truck models sets this johntruck KP7501503 replacement apart: its listing covers post-April-2005 Jost sliders and selected Volvo, Kenworth, and Peterbilt applications. It replaces several listed Jost and Volvo numbers, helping identify the intended slider-cylinder replacement.

The listed 12.0-inch center-to-center specification gives a dimension to compare with the existing actuator, while the replacement numbers KP7501503, 85112707, SK7501503, and JOSSK7501503 help narrow part-number matching. Applications include Volvo/White VNL 670 Gen 2, Kenworth T680, and Peterbilt 379, 387, and 579, with model years stated for several. The after-April-2005 slider note further narrows the fit decision.

Skip it if you service a slider shipped before April 2005; Outopakkle KP7501501 is listed for that earlier style.

Choose this johntruck replacement when servicing a listed post-April-2005 Jost slider and the 12.0-inch center-to-center dimension and replacement number match. Its named model coverage includes selected Volvo, Kenworth, and Peterbilt trucks.

Listed on Amazon as: Fit for Jost 5th Wheel Slider Air Cylinder 12.0in C-to-C

#7 · Best Older Jost Slider

7. Outopakkle KP7501501 Cylinder

• Weight: 5.49 lb

Best for: Pre-April 2005 Slider Fit.

Why it ranks #7: The listing identifies this 15-3/4-inch center-to-center cylinder for Jost sliders shipped before April 2005 and describes an external spring design.

Its 153⁄4-inch center-to-center length and stated use on sliders shipped before April 2005 make this Outopakkle cylinder a targeted older-style Jost slider replacement. The external spring design also distinguishes it from the original internal-spring design described for this application.

Outopakkle identifies KP7501501 and 1770SK7501501 and describes the cylinder as the old-style or original design for sliders shipped before April 2005. That timing helps separate it from later slider applications when planning a replacement. The product notes that the original internal spring design is no longer available and that replacements such as this one use an external spring design, a relevant construction detail for buyers servicing that older setup.

Skip it if you have a slider shipped after April 2005; Bonbo KP7501503 is listed for later slider systems.

This Outopakkle cylinder fits the decision point for a buyer servicing the specified older Jost slider application. Its before-April-2005 listing and 153⁄4-inch center-to-center measurement are key boundaries to compare with the existing assembly.

Listed on Amazon as: For Jost Fifth Wheel Air Cylinder KP7501501 / 1770SK7501501

#8

8. JEENDA KP7501503 Cylinder

• Weight: 2.9 lb

Best for: Jost Slider Number Match.

Why it ranks #8: Compatible with the Jost slider and lists replacement numbers KP7501503 and 85112707, though it provides fewer fitment and dimension details.

Replacement-number coverage for Jost KP7501503 and Volvo 85112707 gives the JEENDA cylinder a clear identification path for a Jost fifth wheel slider repair. The listing also describes its construction as tough and lightweight, framing it as an aftermarket cylinder for that application.

JEENDA names compatibility with a Jost fifth wheel slider and supplies KP7501503 and 85112707 as replacement references, which helps buyers compare the part to the cylinder being removed. Its listed dimensions are 16 × 4 × 4 inches and weight is 2.9 pounds, details useful for handling and space checks during a planned replacement. The supplied application description does not add truck model or slider shipping-date coverage.

Skip it if you need an explicitly stated post-April-2005 truck application; johntruck KP7501503 lists that timing and several truck models.

This JEENDA cylinder is a candidate for a buyer matching a Jost slider and one of its two replacement numbers. Its supplied listing gives no truck model or slider-date range, so those details may matter for application-specific selection.

Listed on Amazon as: JEENDA Air Cylinder Compatible with Jost 5th Wheel Slider KP7501503 SK7501503 for Volvo 85112707

#9

9. ProFleet 6000 Release Kit

Best for: Freightliner 6000 Series Kit.

Why it ranks #9: This is a complete air-actuated release kit for 6000 Series hitches, rather than a broadly specified replacement cylinder; its listed length is 12 inches.

The ProFleet FON KIT AA 6000L is identified as an air-actuated release kit for 6000 Series hitches, giving it a defined commercial-truck application rather than a general cylinder listing. Its 12-inch overall length and alloy-steel and aluminum materials add useful selection details.

This product is a release kit, not just a cylinder: the listing identifies an air-actuated fifth wheel release assembly and names 6000 Series hitches. Its 12.00 × 4.00 × 4.00-inch overall dimensions help buyers consider space within the assembly, while alloy steel and aluminum are the stated materials. The listing also describes heavy-duty pneumatic components and use on Freightliner Cascadia, Western Star, and other heavy-duty trucks, supporting a focused commercial application.

Skip it if you service a Kamar Otawa T2 or Yardhrse terminal tractor; ProFleet J043186 lists those applications.

This ProFleet kit is for a commercial-truck buyer whose release assembly calls for a 6000 Series hitch kit. Its overall dimensions and named hitch-series application are relevant boundaries when checking the space and assembly being serviced.

Listed on Amazon as: Profleet Air Actuated Fifth Wheel Release Kit, Premium Pneumatic Cylinder Assembly for 6000 Series Hitches of Freightlner Cascdia Westrn Str Heavy Duty Trucks, Replaces FON KIT AA 6000L

#10

10. ProFleet J043186 Assembly

• Weight: 8.5 lb

Best for: Terminal Tractor Actuator.

Why it ranks #10: The application is limited to Kamar Otawa T2 and Yardhrse terminal tractors, making it less suitable for general fifth wheel cylinder searches.

Specific compatibility with Kamar Otawa T2 and Yardhrse terminal tractors makes this ProFleet J043186 air release cylinder a focused yard-truck actuator choice. Its standard NPT pneumatic fittings are listed for the air-line connection, and the J043186 number provides a direct replacement reference.

The product is identified as a fifth wheel air release cylinder assembly for terminal tractors and spotter tractors, giving yard-truck operators a clear application context. Standard NPT pneumatic fittings are specified for the air-line connection, while the listed 12 × 6 × 5-inch package dimensions provide a size reference for handling and planning. The J043186 model and replacement reference help distinguish this assembly from other ProFleet fifth wheel release products.

Skip it if you need a 6000 Series hitch release kit for a commercial truck; ProFleet FON KIT AA 6000L lists that application.

Choose this ProFleet assembly when servicing a Kamar Otawa T2 or Yardhrse terminal tractor with a J043186 application. Its NPT fittings and stated vehicle coverage make the air connection and tractor type central fit considerations.

Listed on Amazon as: Profleet Fifth Wheel Air Release Cylinder Assembly, Pneumatic Lock Actuator for Kamar Otawa T2, Yardhrse Heavy Duty Trucks, Replaces J043186