Marshall Instruments MSB00100 Liquid Filled Fuel/Oil Pressure Gauge Black

Higher quality mineral oil dampened gauge than I expected for price. Fast delivery well packaged.

Going on six months in my engine bay, 7.3 diesel with a 203 degree thermostat so it runs nice and warm like it was designed. This gauge has worked flawless , never had a leak , never had an issue, great deal! Just go ahead and buy one.

I wanted a small pressure gauge to direct mount to my engine block to check pressures while working on the motor this small gauge was perfect very easy to read at a glance this far exceeded my expectations and great addition to my engine upgrade

Woks great

Just what I was looking for black! Is liquid filled (thick-clear) and seems solid good quality. I hope it is made in the USA as stated. (If it were my product; I'd remove the made in Tiawan (or Hong Kong) sticker from the bubble wrap pouch. (Makes you wonder...)

Just finished installing it on my Buell XB9R engine/racebike to run at Bonneville, so it wont get a true test until next season. Great looking gauge! Says Anaheim,California on the face, but I was a bit disappointed when I opened the box and the bubble wrap had a "Made in Taiwan" sticker on it (as another reviewer stated). I'm not going to throw you guys under the bus because, I did go back and re-read your specs, and I could not find where it stated this particular gauge was manufactured in the USA. I hope it holds up better than the Arlen Ness gauge it's replacing (the glycerin leaked out from the needle/face area, otherwise it still worked fine).

This is a nice piece of comfort to have if you got yourself a performance oriented engine, or even if you just want piece of mind in regards to having oil pressure. No need to try and run a pressure test if you got a mechanical gauge at all times that is designed to be used at all times.So far I've had no issues with this but I have seen some others where oil has leaked into the gauge or some other problem. I can only speak for myself and I've pushed the car once in a while aside from it being my daily and its held up with no issue.You DO want to use thread sealant as that -can- lead to a small leak, also the visual reading may slightly differ as I've seen it vary +/- 5~7psi.Overall a solid buy and imo a must have if you plan to care for your engine for a good long while.

This gauge does what its made to do. Monitors pressure. There a catch tho. I have it set in an area that has a lot of heat. As with liquid filled gauges it does what liquid filled gauges do when they get hot, the needle will drop and show an incorrect pressure. Roughly 6 degrees or more.Once you figure out the relief to equalize the internal and external pressure the gauge will read correctly.I gave the review all 5s, even accuracy bc the gauge did exactly what it was intended to do and what liquid filled gauges naturally do.