Coolant Temperature Sensor With O-Ring
 

Complete kit includes revised style temperature sensor with new o-ring. Easy to install. Resolves running issues for many owners who are still using the original black sensor which had a high failure rate.

WARNING:Installation is simple but keep this in mind. You are working with a high pressure cooling system. Before starting work make sure the engine is absolutely cool. This could mean letting the car sit for several hours before starting work. Installation for VW MKIV:First remove the blue coolant reservoir cap to release any pressure that may be in the system. Tighten the blue cover back; this will help create a vacuum in the system that will reduce lost coolant while replacing the sensor. Next remove the forward engine cover by twisting the three release screws 90°. With the forward cover removed the coolant sensor will be visible on the driver’s side of the engine. Remove the retaining clip with a flat blade screw driver. Pull the sensor out and remove the o-ring that may still be in the coolant line. Press in the new sensor replace the clip.