Throttle Position Sensor TPS 26 mm Polaris Sportsman 550 570, Ranger 570 800 and RZR 800 - 2009-2026 Brand new aftermarket throttle position sensor for the 26 mm Bosch type throttle body used across the Polaris Sportsman, Ranger and RZR range. The TPS reports the exact angle of the throttle plate back to the ECU, and the ECU uses that signal to set fuelling and ignition timing. When the sensor track wears or develops a flat spot, the signal jumps or drops out and the engine responds with hesitation, surging, poor idle or a fault code, even though the throttle body and cable are mechanically fine. This unit is a direct replacement for the original sensor. It is plug-and-play and a direct fit, using the original three-terminal plug and the original 38 mm fixing hole spacing, so it mounts straight onto the throttle body with no modification. Every unit shipped is tested before dispatch. All item pictures are accurate; if in doubt, compare the sensor body, the centre bore and the plug against your original part before ordering. Key Features Brand new aftermarket sensor, not a refurbished unit Direct replacement for the original throttle position sensor Plug-and-play, direct fit, easy installation 26 mm centre circle to suit the Bosch type throttle body Three terminals on a single plug, matching the original 38 mm between fixing holes, as original Every unit is tested before it is shipped Technical Specs Specification Detail Width 52 mm Length 55 mm Height 23 mm Centre circle diameter 26 mm Distance between fixation holes 38 mm Number of plugs 1 Number of terminals 3 Throttle body type Bosch Our part number RMS140-105052 Vehicle Fitment Guide Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering. Make & Model Years Polaris Sportsman 550 2009-2026 Polaris Sportsman 570 2009-2026 Polaris Ranger 570 2009-2026 Polaris Ranger 800 2009-2026 Polaris RZR 800 2009-2026 OEM Part Number Cross Reference Aftermarket replacement. OEM part numbers are listed for reference only. Part Number Manufacturer / Brand 3131705 Polaris Frequently Asked Questions Do I need to modify anything to fit it? No. It is a direct, plug-and-play replacement for the original sensor, with the same 26 mm centre circle, the same 38 mm fixing hole spacing and the same three-terminal plug, so it mounts on the original throttle body using the original wiring. What do I receive? One brand new throttle position sensor, tested before dispatch, as shown in the photographs. Re-use the original screws and seal from the sensor you are removing. How do I tell whether my TPS has failed? Common signs are a hesitation or flat spot at a particular throttle opening, surging at steady throttle, an unstable or hunting idle, poor fuelling when the engine is warm, or a stored throttle position fault code. Sweeping the throttle slowly while watching the sensor output will often show a dead spot or a sudden jump where the resistive track has worn. Does the sensor need setting up after fitting? The sensor mounts in the original position via its fixing holes, so its physical alignment is set by the throttle body itself. Follow the manufacturer procedure for your model to reset or relearn the throttle position after replacing the sensor. Dispatched from the UK · 12-month warranty · Fitment support from our technical team
