• Napp Motorsports coolant neck blockoff plate installed on a Miata engine
  • Black anodized Miata coolant neck blockoff plate with Napp Motorsports logo
  • Coolant neck blockoff plate with freeze plug and O-ring
  • Miata engine front with timing belt and coolant neck blockoff installed
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Napp Motorsports

Miata Coolant Neck Blockoff

Miata Coolant Neck Blockoff

$30.00 USD
$30.00 USD
Sale Sold out
Shipping calculated at checkout.

For off-road use only.

Not CARB Legal

This kit closes off the front coolant neck on the NA and NB Miata after a coolant reroute. A lot of reroute kits leave the neck open with nothing to seal it, and this is the piece that finishes the job.

The kit includes the blockoff plate, an O ring, and a freeze plug that goes into the head. The plate is thick enough that you can reuse the factory hardware.

These are kept in stock.

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