---
product_id: 238603108
title: "1PC Water Temperature Sensor, 1/2NPT Water Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃"
brand: "walfront"
price: "£15.35"
currency: GBP
in_stock: true
reviews_count: 7
category: "Walfront"
url: https://www.desertcart.co.uk/products/238603108-1pc-water-temperature-sensor-1-2npt-water-temperature-sensor-oil
store_origin: GB
region: United Kingdom
---

# 1/2NPT thread size ±1.5% accuracy 38℃~120℃ range 1PC Water Temperature Sensor, 1/2NPT Water Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃

**Brand:** walfront
**Price:** £15.35
**Availability:** ✅ In Stock

## Summary

> 🌡️ Stay ahead of the heat—engine temp sensing that means business!

## Quick Answers

- **What is this?** 1PC Water Temperature Sensor, 1/2NPT Water Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃ by walfront
- **How much does it cost?** £15.35 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.co.uk](https://www.desertcart.co.uk/products/238603108-1pc-water-temperature-sensor-1-2npt-water-temperature-sensor-oil)

## Best For

- walfront enthusiasts

## Why This Product

- Trusted walfront brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Stable & Sensitive:** Engineered for high sensitivity and stable output, minimizing false alerts and maximizing uptime.
- • **Plug & Play Replacement:** Direct replacement sensor designed for quick installation—get your system back online fast.
- • **Universal 1/2NPT Thread:** Seamlessly fits most oil and water temp gauges without extra adapters—easy swap, zero hassle.
- • **Robust Brass Construction:** Durable brass body ensures long-lasting performance even under harsh engine conditions.
- • **Precision Temperature Range:** Monitors critical temps from 38℃ to 120℃ with ±1.5% accuracy for reliable engine health.

## Overview

The 1PC Water Temperature Sensor by Walfront offers a precise 38℃ to 120℃ measurement range with ±1.5% accuracy, housed in a durable brass body. Featuring a universal 1/2NPT thread, it’s a direct, hassle-free replacement for oil and water temperature gauges, delivering stable and sensitive performance to keep your engine running optimally.

## Description

Buy 1PC Water Temperature Sensor, 1/2NPT Water Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃: Water Temp - desertcart.com ✓ FREE DELIVERY possible on eligible purchases

Review: Cat 3406 mechanical coolant temp - This is the one I was looking for ti for my application on a 3406 mechanical engine. Space was a concern as I didn’t need a bushing so the 1/2” size fit into my application much better. One terminal is smaller than the other so pay attention!
Review: Good sensor but read the review to connect it properly - These sensors are supposed to be VDO 1009 as suggested by the laser engraved numbers on the head of the element. However, as far as I can tell the only VDO 1009 was the 323-803-001-009D which is no longer made. The 1009 should have a metric thread specifically M14 X 1.5. This particular sensor looks more like the 1019 which had a 1/2 NPT thread. Either one was a common ground sensor meaning that the ground connection is made via the engine block. There are two pins on the connector the wider one (G=gauge, 6.3 mm wide) is the output of the sensor. The narrow one (W=warning, 4.8 mm wide) is for the warning light which is normally open. The switch of the 1009 should close at 102°C while the one for the 1019 should do it at 92°C. As far as I can tell the switch of these sensors closes at around 87°C, turning off when the temperature drops back to about 82°C (about 180F). This is a bit outside the tolerance given by VDO (95+/-3) but they don’t specify at what resistance the switch is considered to be “open” so there is some room for error here. The sensor itself seems to be well within tolerances and the readings of resistance versus temperature follow closely the VDO tables. Overall the sensor performs well and it's beautifully machined. If you don’t require a super accurate switching point these are a good deal.

## Features

- The water temp sensor made of material, to use. Thread size: 1/2NPT.
- HIGH RELIABILITY: The engine temp sensor adopts professional manufacturing, excellent sensitivity and high reliability.
- EASY TO USE: The engine temperature sensor is a great and direct replacement for the old or damaged one.
- STABLE PERFORMANCE: The water temp sensor replacement has small body and . Threshold: 103℃.
- BRAND NEW: The water temperature sensor is brand new and . Measuring Range: 38℃ to 120℃.

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B07SNP1R73 |
| Best Sellers Rank | #164,570 in Automotive ( See Top 100 in Automotive ) #38 in Automotive Water Temperature Gauges |
| Brand Name | Walfront |
| Customer Reviews | 4.1 4.1 out of 5 stars (35) |
| Item Dimensions | 3.15 x 1.57 x 1.57 inches |
| Lower Temperature Rating | 38 Degrees Celsius |
| Manufacturer | Walfront |
| Material Type | Brass |
| Measurement Accuracy | ±1.5% |
| Measuring Range | 38℃ to 120℃ |
| Model | 1PC |
| Mounting Type | Flange Mount |
| Output Type | Analog |
| Specific Uses For Product | Temperature Sensor |
| Style Name | Durable |
| UPC | 746771790190 |
| Upper Temperature Rating | 120 Degrees Celsius |

## Product Details

- **Brand:** Walfront
- **Item dimensions L x W x H:** 3.15 x 1.57 x 1.57 inches
- **Lower Temperature Rating:** 38 Degrees Celsius
- **Material:** Brass
- **Style:** Durable

## Images

![1PC Water Temperature Sensor, 1/2NPT Water Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃ - Image 1](https://m.media-amazon.com/images/I/510RslowqOL.jpg)

## Customer Reviews

### ⭐⭐⭐⭐⭐ Cat 3406 mechanical coolant temp
*by J***. on October 1, 2025*

This is the one I was looking for ti for my application on a 3406 mechanical engine. Space was a concern as I didn’t need a bushing so the 1/2” size fit into my application much better. One terminal is smaller than the other so pay attention!

### ⭐⭐⭐⭐⭐ Good sensor but read the review to connect it properly
*by A***E on January 14, 2023*

These sensors are supposed to be VDO 1009 as suggested by the laser engraved numbers on the head of the element. However, as far as I can tell the only VDO 1009 was the 323-803-001-009D which is no longer made. The 1009 should have a metric thread specifically M14 X 1.5. This particular sensor looks more like the 1019 which had a 1/2 NPT thread. Either one was a common ground sensor meaning that the ground connection is made via the engine block. There are two pins on the connector the wider one (G=gauge, 6.3 mm wide) is the output of the sensor. The narrow one (W=warning, 4.8 mm wide) is for the warning light which is normally open. The switch of the 1009 should close at 102°C while the one for the 1019 should do it at 92°C. As far as I can tell the switch of these sensors closes at around 87°C, turning off when the temperature drops back to about 82°C (about 180F). This is a bit outside the tolerance given by VDO (95+/-3) but they don’t specify at what resistance the switch is considered to be “open” so there is some room for error here. The sensor itself seems to be well within tolerances and the readings of resistance versus temperature follow closely the VDO tables. Overall the sensor performs well and it's beautifully machined. If you don’t require a super accurate switching point these are a good deal.

### ⭐⭐⭐⭐⭐ Temp sensor
*by V***O on June 5, 2025*

100% Quality and time delivery

## Frequently Bought Together

- 1PC Water Temperature Sensor, 1/2NPT Water VDO Temperature Sensor for Oil Water Temperature Temp Gauge, 38℃~120℃
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**Shop now:** [https://www.desertcart.co.uk/products/238603108-1pc-water-temperature-sensor-1-2npt-water-temperature-sensor-oil](https://www.desertcart.co.uk/products/238603108-1pc-water-temperature-sensor-1-2npt-water-temperature-sensor-oil)

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*Product available on Desertcart United Kingdom*
*Store origin: GB*
*Last updated: 2026-05-23*