Crankshaft Position Sensors

Crankshaft Position Sensors
Crankshaft Position Sensors

Masterparts offers crankshaft position sensors from trusted automotive equipment manufacturers.

What does the crankshaft position sensor do in a car?

The crankshaft position sensor measures the position and rotational speed of the crankshaft. It’s integral to the functioning of the distribution and ignition timing in the engine.

Engine management systems use the signal from the sensor to determine when to fire the spark plugs and synchronise the delivery of fuel to the engine.

If no signal is delivered by the sensor, the engine won’t start.

How does a crankshaft position sensor work?

The sensor works in tandem with the reluctor ring, a toothed ring attached to the crankshaft.

As the crankshaft rotates, the sensor reads the notches on the ring and produces a signal to indicate the precise positioning of the shaft.

Depending on the make of a vehicle, the crankshaft position sensor is typically located on the transmission bell housing or near the harmonic balancer at the front end of the crankshaft.

Signs of a faulty crankshaft position sensor

Over time, crankshaft position sensors can fail. This may cause a vehicle’s engine to stall, fail to start or misfire.

Other signs of a faulty crankshaft position sensor can include:

  • a noticeable reduction in fuel efficiency
  • erratic readings from the RPM gauge
  • an illuminated “check engine” light.

A failing sensor may also prevent fuel-saving devices, such as cylinder deactivation systems and variable valve timing, from working.

How to replace a crankshaft position sensor

Diagnosing and replacing a crankshaft position sensor are tasks usually left to an experienced mechanic. The sensor lies in a sensitive part of the engine.

The following resources outline and demonstrate the steps involved:

Automotive crankshaft position sensors for sale in South Africa

Masterparts supplies crankshaft position sensors produced by respected manufacturers, including febi bilstein and Euromann.

The sensors are rigorously tested for temperature and corrosion resistance, and to ensure reliability across different road conditions.

Where to find crankshaft position sensors from Masterparts

We offer door-to-door delivery. Alternatively, visit any of our branches across South Africa or in Windhoek, Namibia.

For crankshaft position sensors in and around Cape Town:

For crankshaft position sensors in KwaZulu-Natal:

For crankshaft position sensors in Namibia:

As well as crankshaft position sensors, Masterparts supplies camshaft and crankshaft sprockets, con-rods and con-rod bolts, engine bearings and other crankshaft components.

Contact us if there’s a part you need and we’ll be happy to help.


Call us on 021 657 5757 or complete the form below to get a quote.

    Current ProjectCrankshaft Position Sensors