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Nitrous Gauge, 40mm Bottle Mount

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Nitrous Gauge filled with glycerin, 40mm Bottle Mount

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Nitrous Gauge, 40mm Bottle Mount

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  • Nitrous Gauge, 40mm Bottle Mount


When the nitrous pressure increases, so too will the nitrous flow and if the pressure drops then the flow will be reduced. While the nitrous flow may vary, the fuel flow is more likely to remain unchanged, which means that if the nitrous pressure increases it could result in a potentially dangerous lean mixture which could lead to engine damage. Therefore, monitoring the nitrous pressure is an essential precaution to ensure continued reliability. Nitrous pressure is directly linked to temperature which means the pressure is more likely to be a concern as the weather gets hotter.

During cold spells or in cold climates, low nitrous pressure will be detrimental to performance. However, this can be overcome by fitting our Black Knight bottle heater which can be found here

Should you decide to fit a heater, adding a bottle pressure gauge is a worthwhile addition to ensure the pressure doesn’t get too high.

Just like all WON products, our bottle pressure gauge is of the highest quality and identifiable by it’s polished stainless steel case and our WIZARD of NOS logo.

The gauge has a 1/8 BSP male thread, so you will need to select the suitable fitting/kit according to which pipe you're using and where you want the gauge to be mounted.

When the gauge is to be fitted between the bottle and the solenoid a suitable adaptor is required. In the above drop down menu, we offer option 2 (to suit WON 5mm nylon pipe) & option 3 (to suit 4AN braided hose).

 If a customer wants to fit the gauge remotely from the bottle (in a dash for example), we offer a suitable plumbing kit. We can supply these kits for use with either 5mm or 4AN supply pipe (listed respectively in the above drop down menu as option 4 & 5) and they include;

1 x 5mm to 5mm M/M connector (1/8 BSPT [M] to 5mm [F] adaptor when used with 4AN hose)

1 x T-piece (5mm or 4AN)

1 x 1/8 BSP (F) to 5mm (F) elbow adaptor for gauge

2 meters of 5mm high pressure pipe

2 x 5mm nuts/olives



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Need more information? We have dedicated technical staff always ready to assist. Please call or email us on

Yours Sincerely, The Wizards of NOS Team