Basic Info

• OE Part No.: 0501 330 120

• Cross Reference OE: MAN 81259020551, DAF 1916689, Iveco 42567971, Eurotec 95009208

• Product Type: Intarder Hydraulic Retarder Proportional Solenoid Valve / Retarder Pressure Control Valve

• Brand: ZF OEM Matching Transmission Retarder System Repair Spare Parts

• Compatible Gearbox: ZF 16S151NMV, 16S2230, 16S2530, 16S2531 Ecosplit 16-speed heavy truck manual transmission with built-in Intarder retarder

• Applicable Vehicles: Sinotruk Sitrak, MAN TGS/TGX, DAF CF/XF, Iveco Stralis heavy-duty tractors

• Working Voltage: 24V DC

• Material: High-strength alloy valve body, stainless steel precision spool, HNBR high-temperature resistant sealing assembly, high-stability electromagnetic coil

• Net Weight: approx 0.40kg (reference value)

• Matching Components: Retarder ECU, retarder temperature & pressure sensors, retarder housing, transmission main hydraulic circuit

• Function: Convert ECU electric signal into proportional hydraulic pressure, adjust oil filling rate of retarder working chamber, achieve stepless control of hydraulic braking torque

• Category: Heavy Truck ZF 16S Series Transmission Intarder Hydraulic Retarder System Repair Spare Parts

Material & Advantages

1. High-precision machined alloy valve body and stainless steel spool, low hysteresis, fast signal response, ensure continuous stepless adjustment of braking force

2. Imported HNBR multi-channel sealing structure, resistant to high-temperature gear oil erosion, effectively prevent internal hydraulic oil leakage

3. High-stability encapsulated electromagnetic coil, strong anti-interference, stable operation under vehicle vibration and wide temperature environment

4. Standard OEM mounting hole position, oil port thread and plug interface, direct bolt-on installation during overhaul without modification

5. Accurate pressure linear output, avoid retarder jitter, insufficient braking or sudden loss of braking force during downhill operation

6. Adapt to long-distance mountain downhill transportation, frequent retarder continuous working heavy-load conditions

Application Scenarios

• Replace unstable, leaking, signal-abnormal original retarder proportional valve marked 0501 330 120 for ZF 16-speed Ecosplit gearbox with Intarder

• Fix vehicle faults including retarder no braking force, intermittent braking, uneven braking strength, ECU reporting retarder solenoid valve fault codes, slow response of retarder switch

• Complete integrated hydraulic retarder disassembly overhaul and regular maintenance for fleets equipped with ZF 16-speed transmission with Intarder

• Assemble matched retarder sensors and control pipeline following official ZF Intarder assembly standards

Supply & After-sale

• MOQ: 1 piece

• Warranty: 6–12 months (exclude contaminated transmission oil, wiring short circuit, collision damage and natural sealing aging)

• Packaging: Independent shockproof foam + sealed carton packaging to protect valve spool and sealing surface from scratch

• Remarks: Confirm gearbox equipped with ZF original Intarder hydraulic retarder before ordering; calibrate retarder ECU parameters after installation

Gearboxes assembly include brand ZF, Eaton, FAST, Allison, DONGFENG, DC, Benz, volvo, HOWO, WLY etc. Gearboxes parts includegear, synchronizer, PTO, housing, bearings, shaft, top cover, sensors, wireness, repair kits... etc.

Our products have been exported to more than 50 countries and regions such as Korea, Chile, Russia, Kazakhstan, USA, Ecuador, Turkey, Iran, Africa, Latin America, etc., and have been unanimously recognized by customers.

In the future, we will be committed to creating higher-end quality and more intimate service. And a more comfortable customer experience to build Yongliwei company into an auto parts supplier with excellent corporate culture, scientific development concept and continuous innovation ability.

Shiyan Yongliwei Industry and Trading Co., Ltd. is a modern enterprise integrating design, development, production and sales of gearbox assembly and gearbox parts.

Our company was founded in Hubei province, China, and has been specialized the truck gearboxes in Chinese offline market for 21 years .Our parts are the leader of gearboxes area in the China now.

Our company was set up in the largest truck parts production base in the world –Shiyan city, Hubei, China, to meet the demand for products in the Asia and South American markets, a professional international trade sales team was born in Hubei in 2021.

Shiyan Yongliwei is focusing on creating high quality, high technology and high standard gearboxes and its parts.

* 8000 square meters of large warehouse.

* A number of maritime, land, air transport international logistics companies work closely together.

* To provide you with convenient, fast and low-cost e-commerce one-stop service.