I need to get the air adapter that screws into the spark plug hole. Could someone tell me what the name of the adapter is and where I may be able to find one.

TIA

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1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold

it will come with most quality compression tester kits, you may need another adapter to attach the air hose to it, home depot or lowes sells a universal adapter that will fit all air fittings

Thanks Carson.

__________________
1986 300E (3/2002) Rear ended and totaled (10/2009)
2000 Xterra (5/2000)
1992 400E (11/2009) -Sold
1986 300E (12/2009) - Sold
2004 E500 Wagon (6/2013) - Sold

Here is the "Cheap Man's" answer:
Take an old sparkplug, knock the guts out of it, braze an airhose adapter onto it.
Done.

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2007 C 230 Sport.