Marshall 1.5" Direct Mount Liquid Filled Fuel Pressure Gauge, MNB00100 ; Breathe easy. Free returns. ; Condition. New ; Quantity. 7 sold. More than 10 available Damage to the gauge may occur and warranty will be VOID. Use thread sealant and test connection for leaks. Instructions: Use wrench on HEX to tighten/loosen. Fuel Pressure Gauge Marshall MNB00100; 0-100 Psi 1-1/2 In. Liquid Mnb00100 Fuel Pressure Gauge 0-100 Psi Black And Gold Marshall Fuel Pressure Gauge MNB00100; 0-100 psi 1-1/2 in. Liquid Filled Blk/Yel $26.64 Free shipping Precision 0-100psi Glycerin Filled Fuel Pressure Gauge - 304 Stainless Steel $13.99 Free shipping DO NOT operate if a leak is detected. This liquid filled pressure gauge can be used for air, oil, fuel, and any other medium that is not corrosive to the copper alloy internals. Marshall 0-100 PSI Oil Pressure Gauge Midnight Face With Stainless Housing (MNS00100-CLAM) | ARH Custom USA Black Dial, Red Pointer, Liquid Filled, Black Case and Bezel