Cheapest ✨ Mon Ster Universal Gas Cap ✨

This universal fuel cap is compatible with many makes and models of 2-stroke and 4-stroke gas engines. The inner diameter measures approximately 1-1/4″ with an 1/8″ thread.

Note the plastic “fly-swatter” shaped piece which easily fits down into the tank, but prevents the cap itself from falling off or getting misplaced.

⚠ WARNING California Residents: Proposition 65 Warning

Inside Diameter: 1-1/4″ (32.5 mm)
Outside Diameter: 1-3/4″ (44.7 mm)
Thread Pitch: 8 (1/8″ distance between threads)