How can I determine whether my piston is reusable so as to replace just the piston rings?

The most common problem of a piston that needs replacement is in case there are scratches on its body.

What other parts I may need to replace when replacing the piston rings?

To replace the piston rings you need to disassemble the engine, so you also need to replace the cylinder gasket.

$13.27

In stock

Piston Ring Set for HUSQVARNA 243R, 243RJ, 543AE15, 543RS, 543RBS, 543RBX - PARTNER P350S, P350S [#510918001] and related spare parts.

This listing is about a brand new top-quality after-market Piston Ring SetTips for safely installing piston rings made by the well-known OEM firm CABER (Italy), which fits HUSQVARNASpare parts for HUSQVARNA machines 243R, 243RJ, 543 AE15, 543RS, 543RBS, 543RBX, and PARTNERSpare Parts for PARTNER machines P350S, P350S models. It replaces OEM Part #510 91 80-01.

Specifications
Country of Origin	Italy
Product Code	1029956
Compatible Brand	HUSQVARNA
Compatible Models	HUSQVARNA 543RBS, 543AE15, 543RS, 243RJ, 243R, 543RBX, PARTNER / PIONEER P350S, P360S
OEM Part #	510918001, 583838301