NISSAN 18415-31W10 Hand Throttle Lever

The genuine OEM NISSAN hand throttle lever (part number 18415-31W10, A LEVER THROTTL) is a precision mechanical control component located in the vehicle's interior. Its primary function is to manually set and lock engine speed without continuously depressing the accelerator pedal. It plays an essential role during engine warm-up following cold starts, when operating auxiliary equipment (such as mechanical or hydraulic winches and air compressors), and in demanding off-road conditions where a constant elevated idle speed is required.

Technical Specifications and Operation

• Component Type: Hand throttle lever / manual throttle and injection pump control mechanism
• Manufacturer: Nissan (OEM)
• Material Composition: Combination of wear-resistant engineering plastic and metal mounting hardware
• Control Mechanism: Cable-operated mechanical linkage to the injection pump
• Mounting Position: Driver cabin, dashboard / center console control interface

Vehicle Compatibility

This part is exclusively compatible with the following models equipped with the 4.2-liter naturally aspirated and turbocharged diesel (TD42) engine:

• Nissan Patrol (Y61) 4.2 D [1997 – 2016] (A LEVER THROTTL (TD42))
• Nissan Safari Pick Up (TY61) 4.2 D [1999 – 2012] (A LEVER THROTTL (TD42))

Maintenance and Symptoms of Failure

Under intensive off-road duty and regular use, the internal detent or pivot mechanism of the hand throttle lever can wear, and plastic components can fatigue or crack. The most common symptoms of failure include the lever failing to hold its set position, sticking, excessive play, or failing to properly tension the mechanical control cable. Installing a new genuine OEM unit restores smooth, precise injection pump control and reliable idle stability.