Holley Fuel Pressure Regulator Gauge Kit
(1-4 PSi / Carb Only)
If you are running a Weber carburetor on your Toyota truck, this kit is a must-have and a great way to keep your fuel system running right. Weber carbs work best in the 2.5-3psi range. This kit provides you everything you need to dial in the fuel pressure accurately to help your carburetor perform at its peak. This kit includes a low-pressure gauge so you will know exactly how much pressure your fuel system is delivering to your carb, and this is very important when you are trying to correctly tune your carb to achieve peak performance.
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Question: What is the max inlet pressure?
Answer: 7 PSI
- Universal
To open a printable PDF version of this instruction CLICK HERE

Kit Contents:
- (1) - LC Low Pressure Fuel Gauge
- (1) - Fuel Pressure Gauge "T" Fitting
- (1) - Hex Socket Pipe Plug
To install, simply cut fuel delivery hose and place in-line. If you're installing a regulator, you'll want to install a "T" Fitting after regulator. You may have to "walk-it" onto each end of the fitting as it'll be very tight. Once "T" fitting is in place, thread gauge in.
NOTE: Do not use hand to tighten gauge. Failure to do so could result in damage to gauge. Please use wrench on backside of gauge to tighten.
After fuel pressure is set, remove gauge and plug w/ provided pipe plug. Leaving the gauge installed will result in gauge failure.