Description

Overview

Pacific trailer spring brake valve provides controlled application and release of spring brakes on heavy trailer systems, especially on post-1998 ADR-compliant setups. The Pacific trailer spring brake valve is tuned for fast response and stable hold under varying supply pressures, and it integrates with standard 3/8″ delivery circuits for multi-chamber trailers.

Features

• Fast, repeatable actuation for spring brake control
• Four 3/8″ delivery ports for common trailer plumbing layouts
• 1/4″ service reserve and trailer supply ports
• Drop-in replacement for several legacy SR-series references

Specifications and Materials

Part number: AB8373P.
Delivery ports: 3/8″ (4). Trailer supply port: 1/4″. Service reserve port: 1/4″. Typical body materials: cast valve body with corrosion-resistant internals and elastomeric seals (composition varies by manufacturer series). For performance and installation context, see Australian Design Rule 38/02 for trailer brake systems

Compatibility and Fitment

This cross-reference listing means this valve is a suitable replacement for the part numbers and applications shown. Some changes in air line plumbing may be required.
ABC106834, AB8373, SR-3, C51738, 101113 272914, 5006256, 5005810, 108634, M305520, 106834, 101113, 272914

Compliance and Safety

Install and test according to the trailer manufacturer’s procedures and applicable ADR 38/02 performance requirements. After installation, perform leak checks, verify service and park functions, and confirm hold-off and emergency application behaviour before returning the vehicle to service. The Pacific trailer spring brake valve should be function-tested under loaded and unloaded conditions.

Trailer Applications

Suitable for heavy trailers using spring-actuated parking brakes and air-applied service systems, including tandem and multi-axle configurations where stable release and balanced application are required. Workshops commonly select this Pacific trailer spring brake valve when refreshing mixed-age SR-series fleets to a single serviceable pattern.

Cross-reference and Suitability

This part cross-references to or suits the following equivalent part numbers and compatible alternatives:

Why Choose ICS Trailers

We focus on reliable, ADR-aware air brake components and clear specs so workshops can select, fit, and validate with confidence. Browse Air Brake Parts at ICS Trailers