RaceQuip Helmet Parts Kit with HANS/HNR 6mm Plastic Plugs - Black - 204121 4 Bar A Mishimoto racing thermostat is

A Mishimoto racing thermostat is the ideal upgrade for improved cooling reliability and efficiency

making it ideal for those in cooler climates

The Mishimoto aluminum Nissan 300ZX radiator features a lightweight dual core

Stay Frosty performs at the highest heat transfer where other coolants simply don't work

Two boost level settings and scramble boost setting

RaceQuip Helmet Parts Kit with HANS/HNR 6mm Plastic Plugs - Black - 204121 4 Bar A Mishimoto racing thermostat isSince all Snell SA 2015 helmets now have 6mm threaded inserts to mount a HANS HNR device, RaceQuip offers this two pack of replacement 6mm threaded plastic insert plugs to fill the holes if you don't use a HANS HNR. Two of these black plugs come standard with all RaceQuip SA 2015 helmets but these should also fit any other brand helmet that features the 6mm threaded insert. If you do not run a HANS HNR device, it is best to keep the mounting holes