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1st Gen Neon Throttle Body Machining
1995-1999 55mm Neon ATX Throttle Body w/Sensors
Clean - Bead Blast - Bore to 55mm- Test Sensors
Outright Price - $130 Shpd
1995-1999 55mm Neon MTX Throttle Body
(W/Sensors)
Outright Price - $130 shpd
Includes Clean, Bead Blast & Paint, Machine bore to 55mm, Install new 55mm Plate
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Special Offering
$125 + $10 shpg
Need a bigger bore Neon Throttle Body?
I have some 56.5mm to 57mm TBs in stock and that will be sold without sensors. These are guaranteed to work with no issues however there may be some cosmetic blemishes in the bore. Castings often have air bubbles in them and when I encounter them, I fill any of the larger ones with Epoxy. Also as you can see from the above picture, there's a vacuum passage that breaks thru when you bore larger than 55mm which gets filled with epoxy then redrilled. This is the only way you can exceed 55mm with a 1st Gen Neon throttle body.
Many of these oversize TBs are in use and there've been no reported problems. Great deal if you want close to 60 mm worth of flow and still retain a stock appearance.
Neon ATX 55mm Blems
Shown below are typical blemished 420 Neon TB core blems.
These TBs are every bit as serviceable as my other TBs. The difference is that the bores have some small pits in it left by gas pockets that remained in the casting when it cooled. The pits are not indications of porosity and will not affect the airflow.
FYI, only one Neon TB in 2 will be pit free when bored out. I have 12 of these 55mm blem TBs on hand that have minor pits and I'll offer them with your choice of MTX or ATX throttle shaft, without sensors, for $100 shpd to a US address.
Email address is
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