24V Water Temperature Gauge 52mm Chrome Bezel 40-120°C - GM-604

GM-604 24V chrome water temperature gauge (engine coolant temperature meter), 52mm (2 1/16 inch) analogue dial, 40-120°C Celsius scale, black dial with chrome bezel – for compatible 24V trucks, lorries, buses, tractors, plant machinery, diesel engines and marine installations.

Product Description

The GM-604 Water Temperature Meter is an analogue engine coolant temperature gauge designed for monitoring engine operating temperature in compatible 24V DC electrical systems.

Featuring a stylish chrome-finish bezel, black dial, clear yellow Celsius markings and a white indicator needle, this gauge provides a clear and easy-to-read temperature display.

The gauge has a temperature measuring range of 40°C to 120°C, making it suitable for monitoring engine cooling system temperatures in commercial vehicles, agricultural machinery, industrial engines and other compatible 24V applications.

Its chrome appearance gives the dashboard a smart, professional finish while providing essential engine temperature monitoring.

Main Features & Specifications

• Part Number: GM-604
• Product Type: Water Temperature Gauge / Engine Coolant Temperature Meter
• Operating Voltage: 24V DC
• Temperature Range: 40°C – 120°C
• Dial Diameter: 52mm
• Bezel Finish: Chrome
• Dial Colour: Black
• Scale: Celsius (°C)
• Display Type: Analogue needle indicator
• Needle Colour: White
• Warning Indicator: Red high-temperature warning section
• Rear Connections: Electrical terminals
• Application: Engine coolant temperature monitoring

Suitable Applications

The GM-604 may be suitable for a variety of vehicles and machinery equipped with compatible 24V electrical systems.

Potential applications include:

Commercial Vehicles

• Heavy goods vehicles (HGVs)
• Commercial trucks
• Delivery and transport vehicles
• Buses and coaches

Agricultural Machinery

• Tractors
• Farm machinery
• Agricultural diesel engines

Construction Machinery

• Excavators
• Loaders
• Construction equipment
• Earthmoving machinery

Industrial Applications

• Industrial diesel engines
• Diesel generator sets
• Stationary engine installations
• Industrial machinery with 24V instrumentation

Marine Applications

• Compatible 24V marine diesel engine installations
• Marine engine cooling system monitoring

Custom Dashboard Installations

• 24V vehicle dashboard restorations
• Replacement analogue instrument panels
• Custom automotive and machinery instrument installations

Please note: Suitability depends on the vehicle's electrical system, temperature sender compatibility, mounting dimensions and wiring arrangement. These applications are not a guarantee of direct vehicle fitment.

Temperature Measurement Range

The GM-604 displays engine coolant temperature from:

• 40°C: Lower end of the displayed scale
• 80°C: Mid-range reference marking
• 120°C: Upper end of the displayed scale
• The red warning section provides a visual indication of the high-temperature area.

The analogue needle allows the operator to monitor engine temperature while the vehicle or machinery is operating.

Chrome Bezel Design

• One of the distinguishing features of the GM-604 is its chrome-finish outer bezel.

Benefits include:

• Attractive chrome appearance.
• Smart and professional dashboard finish.
• Contrasting black dial for clear visibility.
• Yellow temperature markings for easy reading.
• Classic analogue instrument styling.

Installation / Wiring

Wiring diagram for the GM-604. It is also the last photo in the product gallery. Fitting by a qualified auto electrician or vehicle technician is recommended.

Rear terminals (GM-604)

• S: temperature sender wire
• Middle terminal: earth / chassis ground (−)
• + terminal: to the ignition switch, then to battery +24V (fuse recommended in the supply line)
• Black cylinder on top (Twist-in Light): dashboard illumination bulb holder. It is not an ignition connection.

Step-by-step installation

1. Disconnect the battery (negative first) before starting any work.
2. Confirm the vehicle has a 24V DC system and that the temperature sender is compatible with this gauge. This gauge is not for direct connection to a 12V system.
3. Fit the gauge in a 52mm (2 1/16 inch) mounting hole and secure it with the bridge (U-bracket) clamp and the two mounting studs.
4. Fit the temperature sender into the engine water outlet or coolant thread, using a suitable sealant, so that it reads the coolant temperature.
5. Connect the sender wire to terminal S.
6. Connect the middle terminal to earth / chassis ground (−).
7. Connect the + terminal to the ignition switch, which is fed from battery +24V, with a fuse in the supply line.
8. If you want the dial lit, fit a bulb in the Twist-in Light holder (black cylinder on top). This is the illumination bulb holder only and is not the ignition feed.
9. Check that all connections are tight and insulated, then reconnect the battery.
10. Switch the ignition on and check that the needle moves as the engine warms up.

Why Choose the GM-604?

• Chrome-finish bezel for an attractive dashboard appearance.
• Clear black analogue dial.
• Easy-to-read yellow Celsius markings.
• White indicator needle.
• Red high-temperature warning section.
• 40°C–120°C temperature range.
• Designed for compatible 24V DC systems.
• Compact 52mm dial diameter.
• Suitable for various commercial, agricultural and industrial applications.

Package Contents

• 1 × GM-604 Chrome Water Temperature Meter

Please refer to the product photographs for the exact appearance and supplied item.

Important Compatibility Information

Before ordering, please check:

• Your vehicle's electrical system is 24V DC.
• Your existing gauge's temperature range is compatible.
• The temperature sender is suitable for this gauge.
• The 52mm dial diameter and mounting arrangement are appropriate.
• The rear electrical connections are compatible.
• This gauge is not intended for direct connection to a 12V electrical system.

PRODUCT DETAILS

• Part Number: GM-604
• Product: Water Temperature Meter
• Voltage: 24V DC
• Temperature Range: 40°C – 120°C
• Dial Diameter: 52mm
• Dial Colour: Black
• Bezel Finish: Chrome

GM-604 – Chrome Water Temperature Gauge for Compatible 24V Vehicles & Machinery

Brand

• Brand: Oxford Fasteners