Description
39mm piston kit fits Honda GX31 and UMK431 engines (139F 39mm platform), designed to restore proper engine compression and reliable power output. This kit includes a 39mm piston, piston rings, wrist pin and circlips, ensuring smooth piston movement, consistent combustion and optimal engine performance. A practical replacement for worn or damaged piston components on compatible petrol garden tools such as strimmers and brushcutters, helping maintain stable operation and extend engine life.
Fits specified Honda engines:
Honda GX31
Honda UMK431
Replaces part number:
- 13101-ZM5-000
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