Wabco spring brake chamber part number 9253800020 or 925-380-002-0 is a Type 20/24 combination chamber built to OE specification for disc brake (ADB) applications. The chamber runs a 2.52 in. stroke with a maximum operating pressure of 145.0 psi and releases at 73.97 psi. The push rod is 0.59 in. long with a Ball R8 thread, and the unit ships without a boot. Bolts are M16 x 1.5 with a 4.75 in. center-to-center distance and 1.69 in. bolt length. Both NPTF ports are 3/8 in. - 18. Rated for -40°C to +80°C. An internal breather valve is included. Sold by Pro Gear and Transmission. Call us to confirm fit for your application.
Features
Type 20/24 combination spring brake chamber for disc brake (ADB) axles
Stroke: 2.52 in. | Max. operating pressure: 145.0 psi | Release pressure: 73.97 psi
Bolt thread M16 x 1.5 | Bolt center-to-center: 4.75 in. | Bolt length: 1.69 in.
Push-rod length: 0.59 in. | Push-rod thread: Ball R8 | Supplied without boot
Dual 3/8 in. - 18 NPTF ports | Internal breather valve | Caged unit
Temperature range: -40°C to +80°C | Total length: 12.95 in. | Built to OE specification
Tech Specs
- Brand: Wabco
- Type: 20/24 Spring Brake Chamber
- Type of operation: Disc brake (ADB)
- Stroke: 2.52 in.
- Total length: 12.95 in.
- Push-rod length: 0.59 in.
- Push-rod thread: Ball R8
- Max. operating pressure: 145.0 psi
- Release pressure: 73.97 psi
- Return-spring force: 44.96 lbf
- Bolt thread: M16 x 1.5
- Bolt length: 1.69 in.
- Distance between bolts: 4.75 in.
- Port thread 1: 3/8 in. - 18 NPTF
- Port thread 2: 3/8 in. - 18 NPTF
- Port angle: 0°
- Temperature range: -40°C to +80°C
- Version: Without boot
- Internal breather valve: Included
- Condition note: Caged
- Technical specification: OE specification
