Road King Truck Parts Economy Dummy Shutoff Gladhand — 18in Galvanized Cable, Metal Universal No-Flight Protection

Road King Economy Dummy SHUTOFF GLADHAND with 18" cable RK-150DGH is a rugged, low-cost gladhand assembly that isolates unused trailer air lines and secures to the coupling with an 18" galvanized lanyard for dependable no-flight protection.

When running tandem or double trailers, unused service or supply ports can expose airlines to dirt, moisture and accidental pressure loss. The RK-150DGH replaces common dummy shutoff gladhands and gives a compact, metal-bodied solution that attaches to the operator handle and stays tethered to the vehicle. Built as a universal gladhand, it fits standard National-type couplers and substitutes for several OEM part numbers for fast cross-referencing and replacement.

How does this gladhand keep unused lines protected?

The dummy shutoff covers the coupling opening to prevent contaminants from entering unused lines while maintaining a secure mechanical seal. Its metal construction resists deformation and the shutoff function blocks airflow so lines remain isolated until returned to service.

• Galvanized 18" cable keeps the gladhand attached to the vehicle to avoid loss.
• Metal shutoff body provides sturdy sealing under typical road conditions.
• Universal design fits standard National-style gladhands for interchangeability.

Will it fit my trailer or replace my existing part?

The RK-150DGH is designed as a universal gladhand and directly replaces several popular OEM codes, making installation straightforward for most tractors and trailers. If your current shutoff is a National-style or one of the listed cross-reference numbers, this unit will be a compatible substitute.

• Replaces: Tectran 1010-F18, Tramec Sloan 441047, Phillips 12-0100.
• Universal coupling fits standard gladhand sockets used industry-wide.
• Simple swap-in replacement—no special tools required for basic installation.

How durable and secure is the 18" galvanized cable?

The included 18" galvanized steel lanyard is corrosion-resistant and sized to keep the gladhand tethered to the vehicle while allowing enough reach for comfortable handling. Its metal construction reduces the risk of fraying or failure compared with non-metal tethers and helps ensure the cap remains available when needed.

• Galvanized coating protects against rust from road spray and weather exposure.
• 18" length balances accessibility with theft/loss prevention.
• Secure attachment to the gladhand handle prevents accidental separation during operation.

How do I use and maintain this dummy shutoff?

Using the RK-150DGH is a one-step process: press the gladhand onto the unused port until the shutoff seats, then loop the galvanized cable to the mounting point or operator handle. Maintenance is minimal—inspect the seal faces and cable regularly and clean debris to keep a tight seal.

• Seat the gladhand firmly until the shutoff engages and blocks airflow.
• Rinse or wipe sealing surfaces to remove grit that could compromise the seal.
• Check the cable and attachment point for corrosion or wear during routine inspections.

Who is this for: The Road King RK-150DGH is ideal for fleet managers, owner-operators and maintenance technicians who run tandem or double trailers and need a reliable, economical way to cap unused air lines. It suits anyone seeking a direct replacement for common OEM dummy shutoffs with a durable metal body and a corrosion-resistant 18" lanyard for secure, long-term service.