Allstar Performance Steel Large Fill Plug Kit - 3 in Opening - Aluminum Cap - Black HS11 The whole electronics package is

The whole electronics package is integrated into the helmet as well as the plug connecting to the radio

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Allstar Performance Steel Large Fill Plug Kit - 3 in Opening - Aluminum Cap - Black HS11 The whole electronics package isKits include a weld in bung and an easy grip O ring cap with positive seal. Kits are often used as an inspection plug or a filler plug. Large fill plugs have a 3" opening. 3" 12 thread. Specialty items for the Shop, Trailer and Track. The Allstar Performance brand offers thousands of hard to find, specialty items that cover many segments in the performance aftermarket. For over 30 years, customers worldwide have come to rely on the quality, affordable