The Comet 10002-01691 is the genuine OEM 18mm piston (plunger) kit for Comet LW series pumps. It includes the pistons needed to re-plunger the pump, and replacing worn or scored pistons keeps water out of the crankcase and restores a proper seal against the packings.
- Genuine Comet OEM piston kit
- 18mm pistons
- Fits Comet LW series pumps
- Replaces Comet 2409.0072.00
Install the pistons as a set for balanced performance.










