AIH Delete Plug

Part Number:



AIH Delete Plug - Ford 7.3L 99.5-03

The purpose of this product is to remove the restrictive Air Intake Heater from the intake air flow. Removing the AIH coil will not affect cold start up in any conditions. The PCM only commands the AIH to activate to reduce white smoke during extended long idle periods at low ambient temperatures. Specific conditions must be present before the heater is activated per Ford:

  • Ambient temperature must be below 32°F
  • Engine oil temperature (EOT) must be below 131°F
  • Vehicle power must remain between 11.5 and 15.0 volts
  • Parking brake must be applied
  • The transmission must be in Park or Neutral
  • Glow plugs must be off

- Comes in Blue, Black, and Red anodized 
- Viton O-ring for complete seal 
- Laser etched design
- Made in USA 


99.5-03 7.3L F Series, E Series and Excursions Will not fit Early 99 7.3L
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  • 5
    Added Improvement

    Posted by Unknown on Jun 12th 2018

    Removing the air intake heater air flow restrictions this plug fits perfect.

  • 5
    Looks great, and gets rid of a restriction

    Posted by Jay Z on Apr 3rd 2018

    Looks great, and deletes a worthless restriction in the intake. Thanks.

  • 5
    Great Product

    Posted by Joseph Sampson on Mar 23rd 2018

    Great product and backed with even better customer service. If you need anything, the guys at RiffRaff are there to help and answer questions. Highly recommend anyone to give their business to RiffRaff and you will not be disappointed. Thanks for the help guys!

  • 5
    looks great

    Posted by steve fleming on Jan 26th 2018

    RiffRaff plug looks much better in the intake than the heat coil. Move more air too.

  • 5
    Nice bit of machine work

    Posted by Eric U on Nov 16th 2017

    I make a lot of aluminum parts so I really appreciate good machining. What can I say, fit just like it is supposed to.

  • 5
    Easy install good quality!

    Posted by Remo on Aug 7th 2017

    I installed the AIH plug in my 7.3l. It was an easy install with the provided instruction and part is og good quality. I also ordered the wire kit to go with it!

  • 5
    Looks good

    Posted by Levi on Jun 30th 2017

    It went right in and it looks great
    Fast shipping too

  • 5
    Great Looking Product

    Posted by Larry on May 30th 2017

    Less than 10 minutes to install, and it really looks nice. It helps to clean up the engine compartment by eliminating unnecessary wires. And, getting obstacles out of the way of air flow is always good, too!

  • 5
    Another quality product from riffraff

    Posted by Unknown on Mar 7th 2017

    Great product. Fit exactly like it should. Good replacement for the intake heater.