Piston Ring 47mm x 1.5mm for Husqvarna 357 359 Chainsaw 503 28 90-50 1 Ring

Piston ring for Husqvarna 357 and 359 chainsaws — 47mm x 1.5mm.

Rings wear out long before the piston does. A fresh ring restores lost compression and brings a tired saw back to life, at a fraction of the cost of a full top end rebuild.

This is the same ring supplied in our 47mm piston and cylinder kit (QG35947), available here on its own.

Specifications:

Spec	Detail
Diameter	47mm
Thickness	1.5mm
Quantity	1 ring
Replaces OEM	503 28 90-50
Type	Aftermarket replacement part

Suits Husqvarna:

357 - 359

Note for 357 owners: 47mm is the standard bore on the 359, but it is a big bore size on the 357. This ring suits a 357 only if it has been fitted with a 47mm cylinder and piston. Measure across the top of your piston before ordering if you are not sure.

If your saw is not listed, get in touch before ordering and we will check it for you.

What you get:

1x piston ring

Piston, gudgeon pin and circlips are not included. For a full top end, see our 47mm piston and cylinder assembly kit.

Fitting tip:

Two-stroke rings sit over a locating pin in the piston groove that stops the ring rotating into a port. Make sure the ring gap seats either side of that pin before sliding the piston into the cylinder — forcing it in misaligned will break the ring.

WARRANTY OVERVIEW

Jono & Johno offers a 12-month warranty on most products.

We pride ourselves on selling good quality gear and will be fair and prompt in honouring our warranties. If you’re in trouble, we’ll help you out.

WHAT IS COVERED?

The exact warranty coverage depends on two factors:

Whether the fault is due to user error or a manufacturer defect
Whether the fault is minor or major

Minor faults caused by the user

Parts will be supplied for repair at the user's expense.

Minor faults caused by the manufacturer

Customers are expected to perform basic repairs as part of our warranty process.
Jono & Johno will provide replacement parts and instructions for simple repairs, such as installing a recoil starter.
Jono & Johno will determine whether a fault is classified as minor.
If unsure about a repair, contact us, and we’ll assist you.

Major faults caused by the manufacturer

Jono & Johno will arrange a return, refund, or replacement at our expense.
If preferred (and at our discretion), we may provide replacement parts and contribute to labour costs if you can perform the repair.

Major faults caused by the user

Where possible, parts will be supplied at the user's expense.
If the item cannot be repaired by the user, we offer repairs at our workshop at $80 AUD per hour.
The customer will need to cover return shipping costs for user-related faults.

RETURN PROCESS & SHIPPING COSTS

If you need to return your product:

In-store return: If you're near a Jono & Johno outlet, you can return the product in person. Contact us first to arrange a return authority.
Shipping return: If you are not within driving distance, we will provide a return address.
- If the fault is due to a manufacturer defect, we’ll cover return costs.
- If the fault is user-related, the customer is responsible for return shipping.

EXCEPTIONS TO THE RULE

Some products are not covered by warranty, including:

Engines used in go-karts and stump grinders

OUT-OF-WARRANTY PRODUCTS

If your product is out of warranty and has failed despite minimal use, contact us. We may assess it on a case-by-case basis. If a manufacturer defect is identified, we aim to be fair in resolving the issue—but this is at our discretion.

SKU	QG35947-P-Ring
Model #	QG35947-P-Ring
Barcode #	721814475654
Brand	JONO & JOHNO
Shipping Weight	0.0500kg
Shipping Width	0.050m
Shipping Height	0.050m
Shipping Length	0.050m
Shipping Cubic	0.000125000m3