.21 KEEP/M Outboard Marine Engine
Both Turbo and Standard Head Button versions are available. Requires a .21 90 degree header. Factory picture shows optional remote adjustable needle valve on carb (not included and available separately) as most boaters prefer remote needle mounted in a location within the boat and separate from the engine.
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.12 Head Button Low Nitro for T12LT5/M and 12LT3/M Marine Engines, Standard Plug, 15-25% Nitro