This easy to use cooling fan relay kit includes a labeled wiring harness, 40 amp relay, fuse holder and coolant sensor. Available with 185° on/165° off or 195° on/175° off. Works great with the Spal Pulse-Width Fan Controller.

Relay wiring kits are a must-have when installing an electric fan
Designed to safely integrate with OEM wiring
Waterproof 40/50 Amp relay
Printed wires (for ease of installation)
3/8" NPT (National Pipe Thread) stainless steel switch
Optional switched override capability

Charts

910-64028 Instructions (PDF)

Guides & Documents

Cooling Fan Relays Installation Instructions (91064028)

Specifications

KEY SPECS
MFG. Part #	Select Temperature to see
Brand	SPAL

GENERAL
Thread Pitch	3/8" NPT Sender 1/2" NPT Bushing
Temp. Range	Select Temperature to see
Sold in Quantity	Kit
Notes	Includes heavy duty relay with color-coded wires and a fuse holder.
GTIN Code	Select Temperature to see

Ratings & Reviews

4.8

53 Reviews

Overall Assessment

Customers appreciate the product's convenient and straightforward installation process, excellent usability, and notable material quality, highlighting its practicality for various vehicle projects. Its reliability in preventing overheating and remarkable functionality have garnered several recommendations. Despite some issues with plug compatibility, customers have positively contrasted the product's overall performance and quality to competitors. Users also commend the detailed instructions, foolproof operation, affordability, and the inclusion of all necessary components in the kit. Praise was also given for the product's longevity, demonstrating its high performance safety feature.

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4.8

53 reviews

Most Liked Positive Review

5.0

Quality kit. Easy to install with clear instructions.

The 2 conductor connector in this kit does not fit the conductor on the Speedway fan. They look very similar, but can not be connected. I realize that they are different brands and they were not advertised to work together.

Most Liked Negative Review

1.0

Piece of JUNK

doesnt make elect. fan come on until temp gauge maxes out then wont shut fan off. I WILL be returning this junk for a FULL refund!!!!!!!!!!!!

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I would buy again

5.0

2 years ago

Joe U

Mahopac NY

Verified

Great instructions, excellent customer service.

Would Recommend

I would buy again

5.0

5 years ago

Jim

Lincoln, NE

Verified

Just one of the many purchases for my vehicle

Would Recommend

Making my 57 Pontiac Safari near complete!

5.0

5 years ago

Frank the Car Nut!

Glendale AZ

Verified

Great Items, Sales people very helpful!

This relay kit was just what I needed it was so simple to in

5.0

5 years ago

Scotty

McClure Illinois

Verified

Great quality product and affordable.

Would Recommend

works real good

5.0

6 years ago

kk334c

groveton tx

Verified

39 gmc

Would Recommend

yes

5.0

6 years ago

Mr Clean

Cassville, MO.

Verified

easy to install.

Would Recommend

Works exactly as described

5.0

6 years ago

Joe

Midwest city

Verified

Great product from spall and great service from Speedway

Would Recommend

I've used these before

5.0

6 years ago

Sam

Dearborn,mi

Verified

This is good way to have a foolproof operation of the cooling fan

Would Recommend

A high quality fan controller

5.0

6 years ago

Gto Jim

Northern Wisconsin

Verified

Installed on a Jegs fan. Had to change the connection plugs as they weren't compatible but works great.

Would Recommend

Yes I would recommend this to anyone

5.0

6 years ago

Bernie

Royal oaks Ca.

Verified

I have this thermoswitch on all 3 of my projects. 67 65 c10 & 64 impala. They never over heat.

Would Recommend

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Questions & Answers

12 Questions • 16 Answers

Sort Questions

Model A pickup with battery and fuse block under the seat. How long are the wires on this harness? Also what would be the advantage of the toggle switch override ?

by Robert

• 7 years ago

1 answer

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The pdf refers to a (optional manual override switch but I don't find one listed). Recommendations please. Thanks. Paul

by 34 street rod

• 8 years ago

2 answers

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I bought a speedway 14in fan for my radiator(910158-14) and was wondering which relay and wiring kit would be the best option. Thanks

by Joe

• 8 years ago

2 answers

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Can this kit be used on a 6volt fan and system

by bub

• 10 years ago

1 answer

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Will this work on a dual fan setup?

by rudifus1

• 11 years ago

1 answer

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What temp. switch would I use on my A/C condenser fan? 29 Ford sedan, 350 V-8. A/C condenser fan is under chassis just in front of differential, at a 30 degree angle with a fan mounted on it. I expect tot use another to turn on the electric fan on the engine. What temp do I need there? 195 degree? Thanks, dave

by kopq

• 12 years ago

1 answer

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Will this kit work fine with a flexalite 123 cooling fan?

by Joe13

• 12 years ago

1 answer

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can I use this set on a 1935 Flathead motor I will install a Radiator Electric Cooling Fan on my 1935 Flathead motor. Is this kit good for me ?

by Didier

• 13 years ago

2 answers

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can the fuse holder be located further then 12 inches from the battery i would like to install under my dash on my23 t about 3 feet from my battery

by tara

• 13 years ago

3 answers

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170° Thermostat = Which Part #? My truck has a 170° Thermostat. Does that mean I should get the kit that turns the fan (ON @ 185°)/(OFF @ 165°) or the kit that turns the fan (ON @ 195°)/(OFF @ 175°)?

by jp2code

• 13 years ago

2 answers

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