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Mechanical Temperature Gauge Adapters

These adapters are all designed to accept either the 5/8-18 thread found on Auto Meter and Stewart-Warner mechanical temperature gauges, or the 3/8 BSP thread used on Racetech and Smiths gauges.

Note that the 3/8 BSP thread is very close to 5/8-18. The thread pitch is very close (19 threads per inch for BSP vs. 18 threads per inch for 5/8-18). 3/8 BSP has a slightly larger thread diameter (0.67" nominal OD) than 5/8-18 (0.625" nominal OD). A 5/8-18 fitting may thread into a 3/8 BSP hole, but it will be loose.

Recent Top Seller for this product group

M16x1.5 Mechanical Temperature Gauge Adapter, Brass

M16x1.5 Mechanical Temperature Gauge Adapter, Brass

This UNF female to M16x1.5 male fitting has 5/8-18 female threads to accept a mechanical temperature gauge bulb. The other side has male M16x1.5 threads and includes a sealing washer.

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Part No.
Description
Price
Status
Inline Oil Temperature Gauge Adapter

1227-Size 

Inline Oil Temperature Gauge Adapter

$104.99In Stock
Oil Temp. Probe Adapter Fitting, 5/8-18 to AN Tee, Blue Alum

3497-010-Size 

Oil Temp. Probe Adapter Fitting, 5/8-18 to AN Tee, Blue Alum

$23.99
to
$25.99*
In Stock
Oil Temp. Probe Adapter Fitting, 5/8-18 to AN Tee, Black Alu

3497-210-Size 

Oil Temp. Probe Adapter Fitting, 5/8-18 to AN Tee, Black Alu

 
5.0
$24.49
to
$32.99
In Stock
Inline Temp Gauge Adapter for 1 - 1.25" Hose, 3/8 NPT Female

AM2282 

Inline Temp Gauge Adapter for 1 - 1.25" Hose, 3/8 NPT Female

 
4.8
$68.04*In Stock
Inline Temp Gauge Adapter for 1.50" Hose, 3/8 NPT Female

AM2283 

Inline Temp Gauge Adapter for 1.50" Hose, 3/8 NPT Female

 
5.0
$69.99*In Stock
Weld-in Bung, 5/8-18 for Mechanical Temp Gauges, Steel

AM2261 

Weld-in Bung, 5/8-18 for Mechanical Temp Gauges, Steel

$16.81Not In Stock
notify me when available
1 inch Aluminum Hose Plug with 5/8-18 Female Port

3228-111 

1 inch Aluminum Hose Plug with 5/8-18 Female Port

$17.99*In Stock
3/8 NPT Mechanical Temperature Gauge Adapter, Brass

AM2263 

3/8 NPT Mechanical Temperature Gauge Adapter, Brass

 
5.0
$11.90In Stock
1/2 NPT Mechanical Temperature Gauge Adapter, Brass

AM2264 

1/2 NPT Mechanical Temperature Gauge Adapter, Brass

$11.90In Stock
3/8 NPT Mechanical Temperature Gauge Adapter, Aluminum

AM2272 

3/8 NPT Mechanical Temperature Gauge Adapter, Aluminum

$16.64In Stock
1/2 NPT Mechanical Temperature Gauge Adapter, Aluminum

AM2273 

1/2 NPT Mechanical Temperature Gauge Adapter, Aluminum

$15.47In Stock
M16x1.5 Mechanical Temperature Gauge Adapter, Brass

AM2275 

M16x1.5 Mechanical Temperature Gauge Adapter, Brass

$16.66*In Stock
Mechanical Temperature Gauge Bulb Extender Nut, 5/8-18

1209 

Mechanical Temperature Gauge Bulb Extender Nut, 5/8-18

 
4.5
$24.99In Stock
Racetech 5/8-18 Temperature Bulb Adapter

1098 

Racetech 5/8-18 Temperature Bulb Adapter

 
5.0
$17.49In Stock
Racetech 3/8 BSP Adapter (Included with Gauge)

1097 

Racetech 3/8 BSP Adapter (Included with Gauge)

$18.99In Stock
10mm Copper Washer for Racetech Gauge Temp Bulb

1096 

10mm Copper Washer for Racetech Gauge Temp Bulb

$0.54In Stock

  * Quantity Pricing Available