The Kyosho 74031-02 Under Head is intended as a direct-fit spare for the KE21SP, helping control operating temperatures and supporting steady engine output. Its profile assists in moving heat away from critical areas during extended runs.
This under head matches the KE21SP's mounting and cooling arrangement, making it suitable for repairs where original fit and thermal performance are required.
Fit the Kyosho 74031-02 Under Head to a cool, clean engine and ensure the head is level. Correct seating promotes even heat transfer and keeps the engine running smoothly.
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