11023 Views Updated 27 September 2026

502957701 Quick Release Valve for Liebherr

301.07.0002

Summary

This high-strength quick release valve is designed for Liebherr heavy commercial vehicles. Featuring M22x1.5 port connections and a maximum pressure rating of 10 BAR, it ensures rapid air exhaust and improved braking response for heavy-duty applications. Equivalent to OE Liebherr 502957701.

Product identifiers
EAN Code	8699031073651

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Compatible OEM Codes

MAN
- 90.81011-4151
- 88.52180-6210
- 81.52120-6022
- 81.52120-6021
- 81.52120-6016
- 81.52120-6014
VOLVO
- 353097
- 352097
RENAULT TRUCKS
- 7701015884
- 5430129125
KRONE
- 5009450250
- 500945025
KÖGEL
- 945025
- 77330
DAF
- 1506490
- 0720000
WABCO
- 975 001 000 0
VDL
- 40720000
VAN HOOL
- 637205830
TEREX
- 34388740
SCHMITZ CARGOBULL
- 50601
SCANIA
- 2089932
NEOPLAN
- 07127000
MERCEDES BENZ
- 000 430 49 81
LOHR
- A05020217
LIEBHERR
- 502957701
LANGENDORF
- 1133420
IVECO
- 2472250
GOLDHOFER
- 200272
FRUEHAUF
- ASX0009002
FELDBINDER
- 006717
FAUN
- 99708436079

Description

What does a quick release valve do?

This quick release valve serves as a critical component within the pneumatic brake system of heavy commercial vehicles. It functions by rapidly venting compressed air from the brake chambers the instant the brake pedal is released, effectively eliminating the lag caused by long air lines. This mechanism ensures that the linings disengage almost instantly, contributing to safer braking performance and reduced wheel drag.

Vehicle and technical compatibility

This specific unit is engineered to be compatible with Liebherr vehicles. The component features M22x1.5 port configurations, specifically one primary port and two secondary ports (M22x1.5 x2), designed to withstand operating pressures up to 10 BAR. This design ensures reliable performance under demanding heavy-duty conditions.

Installation and maintenance guidance

For workshop technicians, this valve should be inspected during routine brake system maintenance. Ensuring that all M22x1.5 connections are secure and that the air exhaust path is unobstructed is vital for maintaining optimal braking response times. Proper installation helps preserve the life of brake linings and drums.

Operational benefits

Selecting a high-strength component like this helps prevent uneven wear and improves overall vehicle safety in construction or heavy transport environments.

OE cross-reference

301.07.0002 (Quick Release Valve) is the equivalent of the Liebherr OE number. This part directly replaces Liebherr OE number 502957701.

Technical Specifications

Technical Specifications
Port 1	M22x1,5
Port 2	M22x1,5 (X2)
Pressure	MAX 10 BAR

Other OEMs

DAF

1506490
0720000

FAUN

99708436079

FELDBINDER

006717

FRUEHAUF

ASX0009002

GOLDHOFER

200272

IVECO

2472250

KÖGEL

945025
77330

KRONE

5009450250
500945025

LANGENDORF

1133420

LIEBHERR

502957701

LOHR

A05020217

MAN

90810114151
88521806210
81521206022
81521206021
81521206016
81521206014
90.81011-4151
88.52180-6210
81.52120-6022
81.52120-6021
81.52120-6016
81.52120-6014

MERCEDES BENZ

A0004304981
0004304981
000.430.4981
000.430.49.81
000 430 4981
000 430 49 81

NEOPLAN

07127000

RENAULT TRUCKS

7701015884
5430129125

SCANIA

2089932

SCHMITZ CARGOBULL

50601

TEREX

34388740

VAN HOOL

637205830

VDL

40720000

VOLVO

353097
352097

WABCO

9750010000
975.001.000.0
975 001 000 0

Compatible Vehicles

Compatible Vehicles
Brand	Model	Engine
DAF
FAUN
FELDBINDER
FRUEHAUF
GOLDHOFER
IVECO
KÖGEL
KRONE
LANGENDORF
LIEBHERR
LOHR
MAN
MERCEDES BENZ
NEOPLAN
RENAULT TRUCKS
SCANIA
SCHMITZ CARGOBULL
TEREX
VAN HOOL
VDL
VOLVO
VOLVO	B10B	D10A
VOLVO	B10M	D10A
VOLVO	B10M	TD100
VOLVO	B12	D12A
VOLVO	B12	TD120
VOLVO	F10	TD100
VOLVO	F10	TD101
VOLVO	F10	TD102
VOLVO	F12	TD120
VOLVO	F12	TD121
VOLVO	F12	TD122
VOLVO	F7	TD70
VOLVO	F7	TD71
VOLVO	FL10	D10A
VOLVO	FL10	TD102
VOLVO	FL10	TD103
VOLVO	FL12	TD122
VOLVO	FL12	TD123
VOLVO	N10	TD100
VOLVO	N10	TD101
VOLVO	N12	TD120
VOLVO	N12	TD122
VOLVO	NL10	D10A
VOLVO	NL12	D12A
WABCO

FAQ

What is the function of this quick release valve?

It rapidly vents compressed air from the brake chambers when the pedal is released, reducing braking lag and improving response times.

What are the technical port specifications?

This valve features M22x1.5 ports (one main port and two secondary ports) designed for a maximum pressure of 10 BAR.

Which vehicle types is this compatible with?

This component is engineered for use in Liebherr heavy commercial vehicles to ensure reliable pneumatic brake operation.

How can I identify if a replacement is needed?

Technicians should look for symptoms like delayed brake release or increased stopping distances which may indicate a faulty valve.

What are the OE reference numbers of this part?

301.07.0002 directly replaces Liebherr OE number 502957701.