Perma-Cool® 81074 - Fuel Filter and Water Separator System Kit

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In Stock (2) - Ships Tomorrow 10.23.18
Custom Built / Racing
Fitment Notes:
  • Not Vehicle Specific. May require professional installation. Typically used with custom built or racing vehicles
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Product Details

Fuel Filter and Water Separator System Kit (81074) by Perma-Cool®. Comes in a kit. System features cast aluminum filter mount, Perma-Cool® 24,000 mile filter element, high temperature/ high pressure flame retardant hose, brass fittings, stainless steel hose clamps, mounting hardware and illustrated instructions. This product is made of high-quality materials to serve you for years to come. Designed using state-of-the-art technology and with customers in mind. It will meet your needs and deliver great quality at an affordable cost.


Fuel Filter Style: Canister
Inlet Quantity: One
Inlet Size: 1/4" NPT
Inlet Attachment: Female threads
Outlet Quantity: One
Outlet Size: 1/4" NPT
Outlet Attachment: Female threads
Filter Element Included: Yes
Smallest Particle Filtered: 2 microns
Filter Element Material: Paper
Filter Housing Material: Cast aluminum
Filter Housing Finish: Natural
Mounting Bracket Included: Yes
Fittings Included: Yes
Clamps Included: No


  • Adaptable to automotive, industrial and marine applications
  • Use with all types of fuel
  • Removes virtually all water
  • Filters down to 2 microns
  • New low profile filter mount for easy installation in restricted spaces
  • Dual ports right & left offers multiple plumbing options


  • Filter element
  • Mounting bracket
  • Fittings

Since 1969 PERMA-COOL® has been a leader in high quality performance cooling components for automotive and industrial industries. Utilizing years of experience in motorsports, the company engineers and markets top notch cooling solutions ranging from race proven oil and transmission coolers to electric and mechanical fans, oil adapters, complete filtering systems and much more. PERMA-COOL’s product line is a primary source for many racers, hot rod enthusiasts and other drivers who want to keep their vehicle's temperature under control.

California Residents

WARNING Cancer and Reproductive Harm

Part Number:


Warranty Policy

All Cool-Pack™ Radiator Cooling Systems are warranted to be free from any manufacturing defects for one (1) year from date of purchase. Please retain your sales slip and other information concerning date and place of purchase, as they will be required to honor warranty. Out of warranty units are accepted for service and repair. A flat service fee of $50 applies in addition to any required parts and return shipping costs. All costs will be quoted to customer, prior to commencing repair. Any item replaced or repaired will be covered under our 1-year warranty.

Troubleshooting Guide

Symptom: Electric fans do not turn on (start) at selected “On” temperature: Thermal Sensor May Not Be Functioning; check the wire between the sensor and control unit for cuts, pinches or slices by fan blade or other cause. Replace sensor assembly.

Symptom: Only one electric fan works: Check and replace relay between the control unit and the second fan.

Symptom: To test to verify that both fans work: Energize blue wire; both fans should run.

Symptom: Fan blade “rattles”, is noisy, or is loose on motor shaft. Secure fan blade assembly with silicone caulk:

1. Carefully remove the fan clip on the shaft by sliding it off slowly with a knife or thin tool.

2. Take a long flat head screwdriver and slide it between the bearing housing and the hub on the fan blade making sure you slide the screw blade alongside the roll pin twisting the screw driver to force the hub off the shaft, make sure it is parallel as not to break or damage the pin, shaft or blade. Warning! Be sure not to put it under the roll pin, you want it parallel to the notch alongside the pin. Slowly slide the fan blade off shaft.

3. To reinstall the blade we recommend that you put a small amount of silicone caulk on the shaft, notch and hub. Then slide the blade back on to the timing roll pin with the notch in the fan blade slid onto the timing roll pin.

4. Use a new blade-retaining clip (or gently flatten existing clip). Press clip down onto shaft into place against blade. Use a 3/8" socket to cautiously press clip into place against blade, then lightly tap with a hammer or similar tool to seat.

5. Set the fan aside to let the silicone completely cure according to product specifications. Your Cool-Pack™ is now ready to reinstall on your vehicle.

Symptom: Fan motor “pulsing feel” when blade assembly is rotated by hand: Nothing is wrong with motor. Perma-Cool® electric fan motors feature very strong motor magnets, the “pulsing feel” is normal.

Symptom: Fan motor “locks up” when blade assembly is rotated by hand: Internal components may be loose, return unit to Perma-Cool® for inspection.

Symptom: Fuse holder melted: Replace fuse holder and install 40 Amp fuse. Recommended fuse is a 30-40 Amp fuse for start-up protection in all Cool-Packs™.

Symptom: Fans will not shut off. The controller relay contacts are probably sticking. Remove fuse, allow to cool (cycle down), then re-install fuse. If the fans turn on immediately (or if motors are off and the problem re-occurs), possible defective controller module. Send for service or purchase replacement controller #21006.

Symptom: Only one fan is functioning correctly: Secondary relay may be bad. Replace with a 5-pin, 40A 30/40 12V DC standard automotive relay, or purchase replacement relay #19002.

Symptom: Fans do not turn on with temperature probe, but do when AC is turned on or BLUE wire is energized.

1. Sensor probe may have backed out of radiator core: Re-insert/install probe into radiator fins.

2. Check for cuts in probe lead wires. Replace controller module if any are found.

Magnuson-Moss Warranty Act:
Legally, a vehicle manufacturer cannot void the warranty on a vehicle due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure in the vehicle (per the Magnuson Moss Warranty Act (15 U.S.C. 2302(C)) Learn More

Vehicle Fitment

This part is custom built / racing
  • Not Vehicle Specific. May require professional installation. Typically used with custom built or racing vehicles
Low Prices Price match guarantee
Guaranteed Fitment Always the correct part
In-House Experts We know our products
Easy Returns Quick & Hassle Free

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