301.01.0017 Volvo Unloader Valve Equivalent

What does an unloader valve do?

This unloader valve plays a critical role in the pneumatic brake system by regulating air pressure within the compressor circuit. By maintaining the correct pressure levels, it ensures the air brake system operates reliably under heavy loads, preventing over-pressurization and ensuring consistent performance for heavy commercial vehicles.

Compatible Volvo models and engines

This component is specifically designed for various Volvo models including the F7, F10, F12, FL10, FL12, N10, N12, NL10, NL12, B10B, B10M, and B12. It is also fitted to Iveco, MAN, Scania, and Renault Trucks. This part is compatible with WABCO systems and other major heavy-duty pneumatic assemblies.

Installation and technical specifications

Technicians should verify the port configurations during installation to ensure a correct fit. This unit features M22x1,5 and M12x1,5 port sizes and is engineered to operate at a cut-out pressure of 8,5 BAR / 0,2 BAR. Regular inspection of the inflation and recycle valve functions is recommended to maintain system integrity.

Selection guidance

Proper selection ensures optimal pressure regulation within the air brake circuit. Consult your authorized distributor to confirm exact fitment for your specific engine series such as TD100 or D12A.

OE cross-reference

301.01.0017 (Unloader Valve) is the equivalent of the Freightliner, Iveco, Kenworth, Mack, MAN, Meritor, Peterbilt, Renault Trucks, Scania, Volvo and WABCO OE numbers. This part directly replaces Freightliner OE number TDAS9753034630. It also replaces Iveco OE number 043074, Kenworth OE number S9753034630, Mack OE number 63009753034630, MAN OE number 84521016012, Meritor OE number S9753034630, Peterbilt OE number S9753034630, Renault Trucks OE number 5000790979, Scania OE number 1935688, Volvo OE number WAB9753034630 and WABCO OE number 9753034630.