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Your cart is empty.Allstar 4 PSI Fuel Pressure Switch with 1/8 NPT Thread features a fuel pressure switch that has a 1/8 national pipe thread and features a 4 psi setting. It is backed by a 90-day limited factory warranty and sold individually.
Joe Abrahamson
August 18, 2025
Works great!
Brock5250
July 31, 2025
Fail 4 miles into the test drive. We installed this as a low fuel pressure warning light switch on a diesel truck. We installed a pressure gauge to monitor and test the switch. 4 miles into the test drive the warning light came on but we had 18psi of fuel pressure showing on the gauge. Tested the switch and it had failed, keeping the light on even with up to 22 psi of fuel pressure.
anon
June 16, 2025
It started leaking 8 months after I purchased it. I expected it to last years. No warranty info available.
Biggus Dickus
May 23, 2025
Worked for about 5 hours.
Rose Forbes
February 17, 2025
Failed closed in less than 2 hours of operations!
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