The Midland Haldex 90555377 is a Precision Response (PR) Plus Height Control Valve designed for suspension self-leveling on heavy-duty trucks. The 7-inch arm features vertical adjustment for precise ride height tuning, and a tight dead zone keeps the suspension responding accurately without hunting. Fittings are Push to Connect (PTC) throughout: two 3/8" PTC delivery ports, one 3/8" PTC supply port, and a 1/4" PTC swivel pilot port. The dump valve is normally open, and the end manifold layout simplifies plumbing. This is a non-time-delay valve. Cross-references include 90555145, a Kenworth replacement, along with 90555133, 90555135, 90555137, 90555139, and 90555257. A genuine Midland Haldex part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.
Features
7-inch arm with vertical adjustment for precise ride height control
Tight dead zone for accurate suspension response
Non-time-delay valve design
Dump valve: normally open
Two 3/8" PTC delivery ports, one 3/8" PTC supply port, and one 1/4" PTC swivel pilot port
End manifold style; replaces Kenworth part 90555145
Tech Specs
- Arm: 7 in. with vertical adjustment
- Delivery Ports: (2) 3/8" Push to Connect (PTC)
- Supply Port: (1) 3/8" Push to Connect (PTC)
- Pilot Port: 1/4" PTC Swivel
- Dump Valve Type: Normally Open
- Manifold Style: End Manifold
- Valve Series: Precision Response (PR) Plus HCV
- Delay Type: Non-time-delay
- Cross References: 90555145, 90555133, 90555135, 90555137, 90555139, 90555257
