Product Summary

Universal Fit

  • Engineered to shut off the ignition or an electric fuel pump when pressure drops below 12 psi
  • Designed to prevent engine damage and will help prevent fires
  • It keeps the motor from starting until oil-pressure rises
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Key Specs

MFG. Part #52-43600
BrandLongacre
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Need To Know

Quick and Easy Returns

Return Policy

Longacre 52-43600 Details

This automatic shut-off switch shuts off the ignition or an electric fuel pump when pressure drops below 12 psi. Prevents engine damage, helps prevent fires, and keeps the motor from starting until oil-pressure rises. Should be used with a momentary bypass switch (913-64381).

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Warranty Information

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For all technical issues/defective parts, please reach out to Speedway Motors/Longacre technicians (800-423-3110) to troubleshoot issues with parts prior to returning parts for warranty.

Longacre 52-43600 Specifications

KEY SPECS
MFG. Part #52-43600
BrandLongacre

Ratings & Reviews

5

6 Reviews

Overall Assessment

Users have praised the product's reliability, performance, and safety features, emphasizing its usefulness as a fuel pump switch. Installations have been reported smooth, with the switch performing optimally in conditions below 12 PSI. Often mentioned is the product's excellent quality-to-price ratio. Users highly recommend the switch for safety purposes, supporting its capacity to shut off the fuel pump if oil pressure drops. This not only adds a layer of security but also potentially prevents accidents. The experience with this switch has been positively compared to competitors, as customers give preference to its trustworthiness and functionality. In conclusion, the solid performance, safety benefits, and economic value of this product are its key selling points.

5

6 reviews

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Safety Firs!

5.0

6 years ago

Ricky C.

South Houston, TX

Verified

Installed this switch to shut off my fuel pump in case of anything bad that could happen below 12 PSI !

Would Recommend

works great

5.0

8 years ago

dick

schuylerville, ny

Verified

A great part, for good price

Would Recommend

Good Quality Product

5.0

11 years ago

Highcrest1

central florida

Verified

Nothing super high tech about this. I have used this longacre switch in the past and experienced good performance and reliability. I used it as a fuel pump switch on my Roadster project. If you are using this as the switch for your fuel pumps main power source don't overlook the suggestion for a momentary switch to prime the system when needed.

Would Recommend

Safety first

5.0

11 years ago

UCharlie

Undisclosed

Verified

I used this pressure switch to create a protection loop to shut off my electric fuel pump if the oil pressure drops. I installed a T where the gauge sensor unit was threaded into the block and two street 90's to create two ports facing out and up. Both work perfect installed that way. 12 volts from the fuse block feeds the pressure switch and then to a SPDT 30 amp relay to send voltage to the pump when the starter solenoid is activated with the key. The pump is the common terminal, NC is the pressure switch feed NO is the solenoid feed. The solenoid activation feed from the key triggers the relay.

Would Recommend

Excellent safety device, must have for f

5.0

12 years ago

Chopperfrank

Aquidneck Island, Rhode Island, USA

Generally any non stock electric pump will come with a warning to use a oil pressure cut off switch with there pump. It just makes sense! If your car is warming up sitting in the driveway and the carb float starts to get stuck that electric pump keeps pumping as long as that gas has an outlet, the stuck float. Even if the engine stalls depending on how the pump is wired, like thru its own on off switch, that pump can still keep on pumping , filling the engine compartment with gas and fumes until, Bang! There goes your pride and joy and anything else around that burns!! I'm talking from very sad experience! Don't let your car idle without supervision and use this switch to turn off your electric fuel when that oil pressure drops! PS it can be mounted on a brass "Y" fitting shared with your oil pressure Sending unit with real easy wiring.

Would Recommend

Like a roll cage

5.0

12 years ago

Susan

SW NM

Verified

There are items that we spend $ on that we hope that we NEVER need. Seat belts, helmets, insurance and these safety switches hopefully fall into that category. Its hard to prove a negative so hopefully I'll never have to prove that this works. Just glad to have it watching out for me.

Would Recommend

Showing 6 of 6 reviews

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