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Your cart is empty.Universal Pressure Gauge (CW00015) by Marshall Instruments. Mechanical. Pressure Range: 15 PSI.
DIY guy
2025-07-14 18:45:48
Needed a fuel pressure gauge for my 65 Mustang to ensure my Edlebrock carburetor didn't get too much fuel pressure. Wanted one that was liquid filled and vented to the atmosphere so it would read true pressure w/out being affected by the engine heat. This fit the bill and works perfectly. High quality and competitively priced with an unobtrusive dial.
Axel
2025-06-06 21:49:01
Fit perfect, small diameter, easily readable
tom m.
2025-05-17 21:47:22
The gauge works perfectly and the PSI holds steady without any vibration.Or shaking of the needle
Eric Z.
2025-05-05 21:17:36
Don't clip the plug!
SUMERIANTEXT
2025-01-31 15:14:31
Gauge was as described. Oil filled is a plus, keeps the gauge steady. Easy to install and easy to read. Used it on a old truck I have to convert the old manual fuel pump to an electric pump. Needed to adjust fuel pressure to 3.5psi and this gauge was perfect for the job. It's been in use for about a 100 miles now and no leaks. I would recommend it to anyone looking for a low pressure gauge.
Twood
2025-01-11 15:53:55
Cannot be used with the gauge facing upward, IF you want it to vent. Vent cap must be trimmed and it would then leak the mineral oil. Also, be careful when cleaning in the area of the rubber vent cap. Wiping with a cloth can "roll or pull" the rubber vent cap out of the hole. With the gauge facing upward the oil will run out.
Vinnie G
2024-12-31 17:55:59
Used this gauge for one day for a nitrous fuel system, gauge is showing 3 psi with zero pressure on the system. Of course the return window was 5 days ago. Not happy.
Ham
2024-12-17 10:54:56
I had a suspected leaky head gasket on my truck. So I installed this Marshall gauge in the coolant reservoir return line to monitor coolant system pressure and as a safety check before opening the reservoir cap to avoid hot coolant injuries. Works very well. Repaired the head gasket and truck works perfect now, but I left the gauge in place as a routine safety check before opening the reservoir cap anyway. Normal system pressure is 3-6 psi for those interested. Never gets above 6 psi even on the hottest days.
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