Heavy-Duty Trailer Brake Control Valve Replacement 26503-1 GTD-26503-1 Compatible with Freightliner GT Development, 3-Way Configuration, 2 of 3/8" Push-In Ports, 1 of 1/4" Push-In

Upgrade your heavy-duty truck's braking system with this air brake valve replacement. Direct replacement for GT Development 26503-1, GTD-26503-1, and compatible with Freightliner trailer brake systems with 3-way configuration. This replacement valve is engineered to meet the demanding requirements of commercial trucking applications, providing consistent brake control and reliable operation. Whether you're a fleet manager or independent operator, this brake control valve delivers the functionality needed for safe and efficient trailer brake operation. Features: 100% Brand New Compatible with: GT Development 26503-1, GTD-26503-1, and Freightliner trailer brake systems with 3-way configuration. Part Number: 265031, 26503-1, GTD-26503-1, 170.265031, GTD265031, JK4Z13A409E Cross References: GT Development 26503-1, CV3 Configuration: 3-Way Configuration Inlet Port Size: 3/8" Push-In (2 Ports) Delivery Port Size: 1/4" Push-In (1 Port) Exhaust Port Size: 1/4" NPT Material: High-strength Metal (Corrosion-resistant treated) Application: Compatible with Freightliner GT Development Systems Installation Type: Push-In Fittings Function: Controls air flow between tractor and trailer braking systems Operating Pressure Range: Standard for heavy-duty truck/trailer air brake systems (typically up to 120 PSI system pressure) Package included: 1 x Trailer Brake Control Valve ( As shown in the picture) Note: Please read all description & size before ordering the product.

• COMPATIBILITY: Direct replacement for GT Development 26503-1, GTD-26503-1, and compatible with Freightliner trailer brake systems with 3-way configuration.
• PORT SPECIFICATIONS: The 26503-1 trailer brake valve features two 3/8-inch push-in ports and one 1/4-inch push-in port which ensures seamless air connection for smooth and efficient braking control.
• CONSTRUCTION: Heavy-duty trailer brake control valve engineered for reliable performance in demanding commercial applications. Synchronizes trailer and tractor braking for safer stops, minimizing jackknife risks and optimizing braking efficiency on heavy-duty applications.
• INSTALLATION: Direct-fit replacement valve maintains proper brake system function when installed according to vehicle specifications. Accurate sizing allows easy drop-in installation.
• APPLICATION: Manufactured to meet or exceed OEM standards; fully inspected for precise fitment, leak-free operation, and long-term durability under rigorous conditions.