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Airtex 1S5421 Diesel Glow Plug Relay

(1983-1989 Ford F-250; 1983-1989 Ford F-350; 1984 Ford E-150; 1983-1989 Ford E-250; 1983-1989 Ford E-350 Econoline; 1984 Ford E-150 Econoline + 3 more models)

Manufacturer

Picture for manufacturer Airtex Automotive Division

Part Number

1S5421
5 reviews
Sale Price

$17.53

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Product Details

The Airtex 1S5421 Diesel Glow Plug Relay is a direct-fit replacement component engineered to control current flow to the glow plugs in diesel engines. This relay serves as the critical link between the ignition system and the glow plugs, ensuring proper pre-heating for reliable cold starts.

Key Features:

  • Direct replacement relay designed to meet or exceed OE specifications
  • Controls electrical current to glow plugs for optimal engine pre-heating
  • Manufactured to OE form, fit, and function standards
  • Helps prevent hard starting, extended crank time, and no-start conditions
  • Quality-tested construction for reliable performance

When a glow plug relay fails, diesel engines may experience difficult cold starts, prolonged cranking, or complete failure to start. The Airtex 1S5421 restores proper glow plug operation by regulating the electrical current needed to heat the glow plugs before and during engine startup. This relay is built with quality materials to withstand harsh under-hood conditions and provide dependable service.

Products specifications

Fits

1983-1989 Ford F-250; 1983-1989 Ford F-350; 1984 Ford E-150; 1983-1989 Ford E-250; 1983-1989 Ford E-350 Econoline; 1984 Ford E-150 Econoline; 1983-1989 Ford E-350 Econoline Club Wagon; 1983-1989 Ford E350; 1983-1989 Ford E-250 Econoline Club Wagon

Fantastic price, positive communication, arrived before promised worked out great!

I ordered a pair of products from Autoplicity and one of them was defective. It was no fault of there's and they handled it with a return postage slip and immediate credit on my card. Very nice to deal with and fast service.

Lowest prices, great service. Thanks.

So far so good.

Almost 50% off the product right from the start and they don't make up for it in shipping cost! Order shipped very quickly. So far, impressive business. I will come here first from now on. Thanks!!!

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