Title:
V-BELT(6PK1661) (KU-3J03666340)
Description:
The V-BELT (6PK1661) (KU-3J03666340) delivers reliable and efficient power transmission across multiple engine-driven systems. It actively drives critical components such as the alternator, water pump, and cooling fan, thereby ensuring smooth and continuous machine operation. Moreover, its 6-ribbed Poly-V design increases surface contact with pulleys, which improves traction and significantly reduces slippage during operation.
In addition, the belt uses a reinforced rubber compound that withstands high temperatures and heavy loads, allowing it to perform consistently in demanding agricultural and construction environments. As a result, it minimises energy loss while maintaining optimal belt tension. Furthermore, its flexible yet durable structure reduces vibration and noise, thereby enhancing overall machine efficiency and operator comfort.
Model Fitment:
Tractors
M-Series (Utility & Agricultural Tractors)
- M5040, M6040, M7040
- M8540, M9540
- M95GX, M105GX, M110GX, M126GX
These models commonly utilise multi-rib belts for auxiliary drives, making the 6PK1661 specification suitable where matched.
L-Series (Compact Tractors)
- L3240, L3540, L3940
- L4240, L4740, L5040
- Grand L Series variants with compatible pulley systems
Designed for compact versatility, these models rely on consistent belt performance for cooling and charging systems.
Construction Equipment
Compact Excavators (KX-Series)
- KX057-4, KX080-3, KX080-4
- KX040-4 (select configurations)
These excavators operate in high-load environments; therefore, a durable Poly-V belt like 6PK1661 supports continuous hydraulic and cooling performance.
Mini Excavators (U-Series)
- U48-4, U55-4
- U35-4 (engine-dependent fitment)
Zero-tail swing machines require compact yet efficient belt systems for tight engine bays.
Utility Vehicles
RTV Series
- RTV-X900, RTV-X1120D
- RTV-X1140 (diesel variants)
Utility vehicles depend on reliable belt-driven systems for charging and cooling under variable workloads.
Part Details:
- Part Name: V-BELT (6PK1661)
- Part Number: KU-3J03666340
- Belt Type: Multi-rib (Poly-V)
- Rib Count: 6
- Length: 1661 mm
- Material: High-strength rubber compound with reinforced tensile cords
- Function: Drives engine auxiliary components (alternator, fan, water pump)
- Key Features:
- High grip multi-rib design for improved efficiency
- مقاresistant to heat, oil, and wear
- Reduced noise and vibration
- Maintains consistent tension under load
- Extended service life in heavy-duty applications
