Fuel Pressure Isolators

Protect your cockpit and enjoy accurate fuel pressure readings with top-quality fuel pressure isolators from Phantom Motorsports. Designed for race cars, street machines, and high-performance builds, fuel pressure isolators create a crucial barrier between your vehicle’s fuel system and the interior gauge—preventing hazardous fuel leaks and fumes from entering your passenger compartment. With a precision isolator, you can confidently monitor real-time fuel pressure from the safety of your dash.

At Phantom Motorsports, we carry isolators compatible with the most popular mechanical and electric fuel pressure gauges. Our isolators are engineered from high-grade materials to resist alcohol, race gas, and pump fuels—ensuring lasting reliability under harsh engine bay conditions. Easy to install with your existing gauge setup, each isolator provides leak-free, vibration-resistant performance for street, track, and off-road applications.

FAQ

What is a fuel pressure isolator and why do I need one?
A fuel pressure isolator is a safety device that separates your fuel system from your mechanical gauge, using a diaphragm and safe fluid (like silicone) to send pressure readings into the cockpit without letting fuel pass through the firewall.

Are isolators required for racing or street use?
Many sanctioning bodies require isolators to prevent greasy or volatile fuel from leaking into the cockpit when running mechanical gauges. They are highly recommended for all vehicles where fuel lines must enter the interior.

Will fuel pressure isolators work with both mechanical and electric gauges?
They’re designed primarily for mechanical fuel pressure gauges, but some models work with electric senders. Always check compatibility in the product description or ask our team.

Are your isolators compatible with alcohol, race fuel, and pump gas?
Yes! Our isolators feature chemical-resistant diaphragms and housing, suitable for a variety of fuels—including alcohol, E85, methanol, and high-octane racing gasoline.

How do I install a fuel pressure isolator?
Install the isolator inline between the pressure source and the gauge, typically at the firewall. Fill with the recommended fluid, bleed any air, and run the supplied line through the firewall to your gauge.

Will using an isolator affect gauge accuracy?
A properly installed and filled isolator will transmit accurate pressure readings with minimal delay. Periodic maintenance keeps response sharp.

What if my isolator leaks or arrives damaged?
Customer satisfaction is our priority. If your isolator is defective or arrives damaged, contact us within 7 days for a quick replacement, exchange, or refund.