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Crown Automotive Exhaust Manifold Emission Line Plug - G444618



For over 50 years, Crown Automotive has been the leading manufacturer and distributor of replacement parts for Jeep vehicles. With over 8,000 different part numbers, including many factory-discontinued items, we offer you exceptional quality that is only matched by an exceptional warranty.


Right thread wrong size

I have an AMC 258 and I'm swapping the stock head and exhaust with ones from a 4L. I need to plug the air injection port on my intake manifold. These plugs are the right 18mm threading but about half the size and they do NOT help me at all. I've been stuck on this for over a month now and this was a huge waste of time and money. I need to find some plugs or my Jeep is not going to run again.

from Olympia, WA |

Question & Answers

1 Answered question

Are these the plugs that fit the air tube holes in the AMC v8 exhaust manifolds? Sam

Asked by Sam from Il on

Hello, Yes these plugs will work on the AMC V8 exhaust manifolds. Thank you!

Answered by Bob H from Il on


With this mission Crown Automotive has been in business for over five decades, delivering original-quality replacement parts at fair aftermarket prices. Crown Automotive has individual parts for sale as well as complete Crown Jeep kits for everything from axle to electrical to transfer case to wiper kits. In recent decades, Crown Automotive has expanded to producing replacement parts for Chrysler and Dodge vehicles as well. Shop Crown Automotive Now


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