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612600061755 Belt Tensioner Pulley For Weichai Engine

612600061755 Belt Tensioner Pulley For Weichai Engine

1.OEM Part No.: 612600061755
2.Material: Cast iron body / Alloy steel pulley / Thermoplastic surface
3.Condition: 100% New genuine/OEM/ODM/ready stock
4.Engine: Weichai WD615, WP10, WP12
5.Pulley Diameter: 74-76 mm
6.Shipping Time: Worldwide delivery within 3–5 business days
7.Payment Methods: T/T, PayPal, Western Union

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Product Introduction

612600061755 1

The 612600061755 is an automatic belt tensioner pulley designed for Weichai WD615, WP10, and WP12 diesel engines. These engines power heavy-duty trucks from Sinotruk HOWO, Shacman, Beiben, FAW, and Foton. The tensioner maintains constant tension on the serpentine belt, which drives the alternator, water pump, air compressor, and other engine accessories.

Inside the assembly, a heavy-duty spring automatically keeps the belt tensioned. As the belt wears or expands due to heat, the spring adjusts accordingly. A built-in damping mechanism absorbs engine vibrations to prevent belt skipping and reduce noise. The body is made of cast iron, featuring an alloy steel pulley with a thermoplastic pulley surface. Bearings are double-row and lubricated for extended service life.

Cross-Reference Part Numbers

Part Number	Notes
612600061755	Primary OEM number (Weichai)
612600061290	Alternate Weichai number (also listed by FridayParts, Alibaba)
612600061754	Alternate Weichai number

612600061755 Specifications

Parameter	Value
OEM Part Number	612600061755
Product Name	Automatic Belt Tensioner Pulley Assembly
Cross-Reference Numbers	612600061290, 612600061754
Engine Compatibility	Weichai WD615, WP10, WP12
Truck Models	Sinotruk HOWO, Shacman, Beiben, FAW, Foton
Mechanism	Automatic spring-loaded damping
Pulley Diameter	74-76 mm (standard OE size)
Bearings	Double-row lubricated bearings
Surface Treatment	Zinc plating or anti-corrosion paint
Quality Grade	Genuine / OEM / ODM
Certification	ISO 9001 / TS16949

Key Features

Automatic Tension
The spring-loaded mechanism automatically adjusts for belt wear and thermal expansion. No manual re-tensioning is required between service intervals.

Vibration Damping
The built-in damping system absorbs engine vibrations, reducing belt noise and preventing the belt from slipping teeth during sudden load changes.

Corrosion Resistance
Metal surfaces feature zinc plating or anti-corrosion paint, providing protection against road salt, mud, and temperature fluctuations common in heavy-duty truck operation.

Double-Row Bearings
These bearings handle higher radial loads compared to standard single-row bearings. They are lubricated and sealed at the factory to ensure extended service life without maintenance.

Direct Fit
Designed to match Weichai OE dimensions exactly. It is a bolt-on replacement requiring no modifications to the bracket or belt routing.

ISO/TS16949 Quality
Produced in factories certified to ISO 9001 and TS16949 standards. Each unit undergoes inspection before shipment.

When to Replace

The belt tensioner pulley wears gradually. Common signs that the 612600061755 needs replacement include:

● Belt squeaking or chirping noises, especially during cold starts or acceleration

● Noticeable pulley wobble or misalignment while the engine is running

● Excessive vibration in the tensioner arm

● Cracks or grooves worn into the pulley surface

● Belt tension reading below the manufacturer's specification

● Rust or corrosion on the tensioner body that affects spring movement

If any of these symptoms appear, replace the tensioner promptly. A failed tensioner can cause the belt to slip or break, which will disable the alternator, water pump, and air compressor simultaneously.

Frequently Asked Questions (FAQ)

Q: What engines does the 612600061755 fit?

A: The 612600061755 fits Weichai WD615, WP10, and WP12 series engines. These are commonly found in Sinotruk HOWO, Shacman, Beiben, FAW, and Foton trucks.

Q: What are the cross-reference numbers for 612600061755?

A: The 612600061755 has two cross-reference numbers: 612600061290 and 612600061754. All three numbers refer to the same belt tensioner pulley assembly for Weichai engines.

Q: Is the 612600061755 compatible with WP13 engines?

A: No. The 612600061755 is for WP10 and WP12 engines. WP13 models use a different part number (612600061279 / 612600061754). Please verify your engine serial number before ordering.

Q: When should I replace the belt tensioner pulley?

A: Common signs include belt squeaking noise, visible pulley misalignment, excessive vibration in the tensioner arm, or visible cracks on the pulley surface. If any of these appear, replace the tensioner to prevent belt failure.