ATRACYPART Spring Brake Valve 110500 Replacement — 2‑Pack Zinc Alloy OE‑Fit for Haldex Trailers, Leak‑Resistant

The ATRACYPART 110500 Spring Brake Valve Sealco is a direct-fit replacement air release valve for Haldex-style trailer parking brake systems, supplied as a 2-piece set to restore reliable brake release and parking function.

This metallic spring brake valve is built to match OE numbers 110500, 110500X, 170.110500, 170110500, 065438 and 51131 and is intended for single-reservoir trailer setups or tandem axles with appropriately sized reservoirs. Manufactured from a patented zinc alloy and tested for pneumatic integrity, the valve aims to deliver leak-free operation and consistent port flow through its 3/8" and 1/2" fittings. The package includes two valves, detailed porting, and coverage by ATRACYPART’s customer-support warranty.

How does this valve restore trailer parking and release performance?

When the original spring brake valve has worn seals or internal corrosion, air can leak or fail to route properly, causing unreliable parking brakes or delayed release. Replacing the failed valve with a direct-fit unit restores correct air routing, reliable spring brake application, and consistent release timing.

• Direct-replacement for OE numbers listed for precise compatibility
• Pneumatic- and submersion-tested to minimize risk of leakage
• Port sizes: four 3/8" delivery ports, one 3/8" supply, one 3/8" control, one 1/2" reservoir
• Sold as a pair for axle or trailer dual-valve service needs

What are the key durability and materials features?

The valve body uses a patented zinc-alloy construction designed for corrosion resistance and extended service life compared with untreated components. Internal seals and assembly are tested to maintain a tight pneumatic seal under typical trailer environmental exposures.

• Patented zinc alloy housing for corrosion resistance
• Tested for pneumatic integrity and submersion leakage prevention
• Designed to withstand road and weather stresses common to trailer use

Will this fit my trailer’s air system and reservoirs?

This Sealco valve is meant for a standard single-reservoir trailer configuration or for tandem axles using two nominal 1,400 cubic inch reservoirs. Confirm compatibility by matching the listed OE numbers and verifying port types and sizes on your existing valve.

• Compatible with single reservoir setups and certain tandem arrangements
• Match OE numbers: 110500, 110500X, 170.110500, 170110500, 065438, 51131
• Check port sizes: 3/8" FP supply/control/delivery, 1/2" FP reservoir

How easy is installation and what support is available?

Installation follows standard air brake valve replacement procedures; the unit is shaped and ported to mirror original equipment for straightforward swapping. ATRACYPART provides customer support and warranty coverage to address fitment questions or defects.

• Direct-fit design reduces modification during installation
• Clear port labels help match airline routing quickly
• Backed by ATRACYPART customer support and warranty assistance

Who is this for: professional mechanics, fleet maintenance teams, and owner-operators who need a reliable, OE-compatible spring brake valve for Haldex-style trailer systems. Choose this 2-piece ATRACYPART 110500 replacement when you require leak-tested materials, correct porting for standard reservoir sizes, and a vetted aftermarket option that restores parking brake function without major system changes.