Home / Potentiometers & Throttle Motors / ZF Potentiometer 635. ZF Potentiometer 635. ZF Potentiometer 635. Enquire about this product SKU: 1617 Category: Potentiometers & Throttle Motors Tags: Potentiometer, ZF Product ID: 1617 Related products Wabco Accelerator Pedal Potentiometer 4613186090 757026 VDO Throttle Control 411 Series.