Best current price£28.95from eBay
Shopping.co.uk recommended and popular offers
eBay£28.95Visit shop Hella 9XU358038-591 Alternator Freewheel Clutch Fits Citroën Mazda Mitsubishi 3
Visit shop10 offers from £28.95 - £43.93
View price history by clicking the chart icon.
This Hella Alternator Freewheel Clutch (Part Number: 9XU 358 038-591) is designed for vehicle owners seeking reliable OE-quality replacement parts. Its key benefit is ensuring proper alternator function and belt system longevity. A crucial caveat is the absolute necessity to verify exact fitment and measurements against your vehicle's specifications before purchasing, as variations exist. Key features include precise manufacturing to OE standards, specific dimensions for exact fitment, and compatibility with select Nissan, Mazda, and Mitsubishi models.
| Model Part Number | 9XU 358 038-591 |
|---|---|
| Brand | Hella |
An alternator freewheel clutch, also known as an overrunning alternator pulley (OAP), allows the alternator to spin freely when the engine speed drops below the alternator's rotational speed. This prevents the serpentine belt from being driven by the alternator's inertia, reducing wear on the belt, tensioner, and alternator.
Vehicle manufacturers use various components, and even within the same model, different engine options or production dates can have different specifications. Using an incorrectly sized or incompatible freewheel clutch can lead to improper belt tension, damage to the belt and pulley system, and potential failure of the charging system.
Common signs include a distinct rattling or whining noise from the front of the engine, especially when you let off the accelerator. You might also notice premature wear on the serpentine belt or erratic charging system performance.
While possible for experienced DIY mechanics with the correct tools, it is often recommended to have this component replaced by a professional. Proper installation ensures the correct tension and alignment of the serpentine belt system.
'OE-quality' signifies that the part is manufactured to meet or exceed the standards set by the original equipment manufacturer for fit, form, and function.
The 'Manufacturer Restriction: Mitsubishi Electric' indicates that this Hella freewheel clutch is designed as a replacement for specific applications where the original equipment was manufactured by Mitsubishi Electric.
You will typically need to remove the serpentine belt to access and measure the alternator pulley. Using calipers or a measuring tape, record the outer diameter, width, and inner diameter, and verify the thread size and distance from the belt pulley to the alternator.
This can indicate a faulty freewheel clutch. Have the part inspected by a professional mechanic for wear or seizure.
A seized freewheel clutch can cause the belt to slip or break. Inspect the clutch and replace if necessary.
While not always the cause, a malfunctioning freewheel clutch can sometimes contribute to alternator issues. Ensure the clutch is functioning properly and the alternator itself is sound.
Compatibility Verification: Before purchasing, it is critical to verify that this part number (9XU 358 038-591) is compatible with your specific vehicle's make, model, year, engine type, and any variant notes. Pay close attention to the provided measurements (Distance from belt pulley to alternator [mm], Fitting Depth [mm], Outer Diameter [mm], Width [mm], Inner Diameter [mm], Belt Pulley Ø [mm]) and compare them with your existing part or vehicle specifications. Cross-reference the 'for manufacturer number' (F-577572) and 'Manufacturer Restriction' (Mitsubishi Electric) if applicable.
Installation: Installation of an alternator freewheel clutch typically requires professional automotive knowledge and specialized tools, such as a specific socket or puller set. It is generally recommended to have this component installed by a qualified mechanic to ensure correct timing and tension of the serpentine belt system.
Care: This part is designed to be maintenance-free under normal operating conditions. Regular visual inspection of the serpentine belt and tensioner is recommended as part of routine vehicle maintenance. If any unusual noise or vibration is detected from the front of the engine, the freewheel clutch should be inspected by a professional.
