AIH Plug - Tapped - 99.5-03 Powerstroke
- Comes in Blue, Black, and Red anodized
- Tapped version for 1/8" NPT Boost fitting
- 1/8" NPT Plug Included for convenience
- Viton O-ring for complete seal
- Laser etched design
- 100% Made in USA
254 Reviews Hide Reviews Show Reviews
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quick and easy
Easiest way to add boost gauge line without drilling into manifold. Just remove AIH plug , put this in and thats it. Did notice an increase in fuel milage due to more airflow.
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Looks great
High quality, made boost gauge installation a breeze, definitely the right price.
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Works great
way better than putting t in map sensor line and looks good to. always great customer service at riffraff
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Overdue
Should have done this long ago. Great product, don't have to woory about any rubber lines.
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Works great
I used this plug to install a boost gauge! Very easy and looks great!
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Great Fit
A great and easy way to add a boost gauge. I made this change in the middle of winter with temps in the 20's and have not felt or seen any effect for starting or running cold.
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Great
easy install, look great, really good quality
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Excellent product, makes boost gage install a 5 min job
Great product fast shipping as usual, makes a boost gauge install so easy a 10 year old can do it. (Mine did!)
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Worth it
Replaced worthless oem part with this product, and created a perfect spot for my boost gauge fitting at the same time. Can't tell if it added any performance by removing the large bulky heater because I added many parts at the same time. Would buy again.






