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Automann · Air System
170.065476
In stock · ships from Knoxville
The R12P type pilot relay valve is an air brake system component that uses a small control signal to quickly apply and release large volumes of air to brake chambers.
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Universal fit
Universal replacement for standard R‑12P style pilot relay valves used on air‑braked commercial vehicles. Confirm exact fit with your vehicle’s manufacturer specifications.
Part data verified against 5 catalog sources
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It helps reduce brake lag, improves timing between tractor and trailer axles, and is a standard replacement part for many heavy‑duty trucks and trailers. You would replace it when the valve leaks, sticks, or fails to properly relay air pressure, causing slow or uneven braking.
Part Number: 170.065476
R12P TYPE PILOT RELAY VALVE
Unit: ea
Dealer: Knox Trailers
Compatibility, alternatives, and more
Parts commonly needed alongside air system
