Yellow face LIQUID FILLED 1 1/2" (38.1MM) O.D. mechanical 0-100 PSI fuel pressure gauge for the GM LS1, LS2, LS3, LS6, LT1 and L98 engines with fuel rail adapter. Gauge reads from 0-100 psi. 

Features:

• Nickel Plated For Corrosion Resistance.
• Lets you get an accurate fuel pressure measurement at the engine compartment.
• Gauge can be used as a fuel pressure, oil pressure, air pressure etc...
• Will bolt on to a 1/8" NPT female port
• VACUUM SEALED FOR ACCURACY.
• Highest quality LSX fuel pressure gauge and rail adapter kit available
• Exclusive permanently sealed unit.