Product Summary

Universal Fit

  • Comes with a 1/2"NPT to 3/8"NPT adapter
  • The thermostatic switch has a 185°F On and 175°F Off
  • Features a 30 amp circuit breaker and a SPST 40 amp relay
  • This thermostatic switch that screws into the engine block or intake manifold
  • It offers good protection for your vehicles electric fan and the vehicles wiring harness
See more details

Key Specs

MFG. Part #30103
BrandPainless Wiring
See more specs

Need To Know

Quick and Easy Returns

Return Policy

Painless Wiring 30103 Details

This Fan Relay from Painless Performance comes with a Thermostatic switch that screws into the engine block or intake manifold. This offers good protection for your vehicles electric fan and the vehicles wiring harness.

Kit includes:

  • 30 Amp Circuit Breaker
  • SPST 40 Amp Relay
  • Thermostatic switch 185°F On/175°F Off (thread size: 3/8"-18NPT)
  • 1/2"NPT to 3/8"NPT adapter
  • Relay base with harness
  • Crimp-on terminals
  • Mounting hardware

 

Charts

Painless Wiring 30103 Specifications

KEY SPECS
MFG. Part #30103
BrandPainless Wiring
GENERAL
Thread Pitch3/8" NPT Sender 1/2" NPT Bushing
Temp. Range175 Degrees Off 185 Degrees On
Sold in QuantityEach
GTIN Code749823301030

Ratings & Reviews

4.9

27 Reviews

Overall Assessment

Customers highly appreciate this product for its practicality and quality. Described as "easy to install" and "painless", it is praised for its comprehensive instructions, ease of use, and professional appearance. The product's dependable performance is highlighted, as it successfully updates the cooling system on various car models and sustains them cool. Despite some issues with the circuit breaker, customers continue recommending this wire harness for its superior material quality, efficient relay, and compatibility with electric fans. The product stands out as well-established and trustable, as buyers affirm they would repurchase it.

4.9

27 reviews

5

24

4

3

3

0

2

0

1

0

Filter by Ratings

Quality item with detailed instruction for installation

5.0

3 months ago

DGiorgi

Saint Augustine Florida

Verified

Bought this item to use with the shroud and fan on a 34 Dodge pickup. Typical quality you would expect from painless, very nice although I would have liked longer wires to mount inside the firewall.

Would Recommend

Thanks

5.0

4 months ago

Craig

Kc , Mo

Verified

Great service and parts

Would Recommend

Fan relay kit

5.0

a year ago

Mike

Minooka, IL

Verified

Excellent kit that includes everything you need to control your electric fan.

Would Recommend

I would buy this product again

5.0

2 years ago

dave

North Dakota

Verified

good product for the price

Would Recommend

Easy to install good price

5.0

3 years ago

Hammer Down

Texas

Verified

On 66 Impala

Would Recommend

Yes I would

5.0

4 years ago

Cliff's t

Abilene Tx

Verified

Went well on my t

Would Recommend

Speedway came through with the part I needed!!!...as always.

5.0

4 years ago

Hopalong

Roswell, GA

Verified

Updating my cooling system and basic system on my '32 Roadster

Would Recommend

Stays cool

5.0

5 years ago

Russ

Massachusetts

Verified

Works properly. No more remembering to turn on the manual switch.

Would Recommend

Quality part.

5.0

5 years ago

Elston

Moundsville WV

Verified

Very professional looking.

Would Recommend

Would not buy again unless circuit breaker is replaced.

4.0

5 years ago

Inspector

Colleyville Tx

Verified

Installed on a 35 Ford to control rad fan

Load More Reviews

Showing 10 of 27 reviews

Questions & Answers

1 Question • 4 Answers

he dual fan setup needs 2 of these kits , right?

by Daniel

• 9 years ago

4 answers

1 of 1 questions shown

Customer Impersonation Script