GT55 Plug Cap Set OS74002200 by O.S. Engine for RC Engines  [OS74002200]

GT55 Cap Set - Product Notes

The O.S. Engine OS74002200 Plug Cap Set GT55 functions as a direct swap-in for GT55-style glow plug terminals, provided to restore reliable electrical connection on compatible model engines.

This product is intended for routine maintenance tasks and is described as a service part focused on fit and contact reliability rather than altering engine behavior.

To fit the caps, remove the existing cap from the glow plug electrode, press the replacement onto the terminal until it seats, and then verify the lead insulation and routing to prevent chafing or exposed wires during operation.

Regular inspection before extended runs will reveal hardened or cracked caps; replace any showing deterioration and recheck all ignition connections after any lead or exhaust changes to avoid misfires.

Offered as an original replacement, the OS74002200 Plug Cap Set GT55 is suitable where GT55 compatibility is required; replace caps to maintain electrical and insulation integrity during regular maintenance.