The original Volkswagen Coolant Level Sensor is a simple and effective design that typically performed well; however, many of the available aftermarket reproductions of the sensor are prone to developing leaks in their all-plastic design. Our GoWesty Coolant Level Sensor Conversion Kit includes a modern, all-metal coolant level sensor and a thread adapter with a new O-ring for direct install into either the original style Plastic Expansion Tank or our Aluminum Coolant Expansion Tank.Protect and future-proof your van with this simple installation. Replace it once and fuggetaboutit!Installation note: This kit replaces VW part numbers: 251-919-372 & 251-919-372A. This kit requires deleting the original wire connector plug and crimping on the included high quality weatherproof plug that matches the new sensor. PDF Instructions GW-V-COOL-SENSOR Instructions Related Articles Coolant Expansion Tank Story: Vanagon