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Haldex · Air System
KN20021
In stock · ships from Knoxville
The Haldex KN20021 is a PP-1 type push-pull parking/emergency brake dash valve that lets the driver manually apply the parking brakes and automatically releases when system air pressure reaches about 35 PSI (35±10 PSI).
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Verified fitment for 3 applications
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All confirmed applications for this part number.
Ford
International
Mack Trucks
Ford
International
Mack Trucks
Fits any heavy-duty truck with a dash-mounted push-pull parking brake valve that uses a 7/8" bulkhead hole and 1/8" NPT ports. Verify release pressure and port configuration before installation.
Part data verified against 5 catalog sources
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It mounts through a 7/8" hole in the dashboard and uses 1/8" NPT ports for supply, delivery, and exhaust. This valve is typically replaced when the dash knob fails to hold pressure, the auto-release pressure is erratic, or the valve leaks. A new knob (KN20903) and mounting hardware are included.
Part Number: KN20021
DASH VALVE
Unit: ea
Dealer: Post Onsite
Compatibility, alternatives, and more
Parts commonly needed alongside air system
