Products Description
5800 Chainsaw Piston Assembly 48mm – Heavy-Duty Top-End Rebuild Kit
High-Performance 48mm Piston Kit for Chinese 58cc Chainsaws
This 48mm piston assembly is a complete top-end replacement kit designed for 5800 series chainsaws and other Chinese 58cc engine platforms. The 48mm bore size is commonly found on 58cc clone saws, and this kit includes the piston, piston rings, wrist pin, and circlips – all components needed to restore compression and engine power when original parts have suffered from wear, scoring, or seizure. Manufactured from durable metal with precision-engineered dimensions, this aftermarket kit offers a cost-effective alternative to OEM parts for both professional workshops and DIY users.
Technical Profiles & Materials
Precision 48mm Bore Size – The 48mm piston diameter matches the factory specification for many 58cc Chinese chainsaw engines, delivering the correct compression ratio and displacement for reliable cutting performance.
Complete Top-End Assembly – Includes piston, piston rings, wrist pin, and circlips – all components required for a full piston replacement. Some comprehensive kits also include cylinder gaskets and additional sealing components.
High-Strength Alloy Construction – Manufactured from durable alloy with precision-machined surfaces for reduced friction and improved heat dissipation, ensuring long service life under demanding cutting conditions.
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Piston Diameter | 48 mm |
| 2 | Compatible Models | 5800 series chainsaws |
| 3 | Engine Displacement | 58 cc |
| 4 | Kit Contents | Piston, piston rings, wrist pin, circlips |
| 5 | Material | High-strength alloy |
| 6 | Ring Thickness | Varies by manufacturer (verify with existing ring) |
| 7 | Wrist Pin Diameter | Standard 5800 fitment |
| 8 | Unit of Sale | 1 complete piston assembly |
Products Application
Engine Restoration After Seizure
When a 5800 chainsaw has suffered from piston scoring or seizure due to insufficient lubrication or overheating, replacing the piston assembly is essential. This kit provides all components needed to restore the top-end to working condition.
Loss of Compression Repair
If the chainsaw is hard to start, lacks power, or produces blue smoke from the exhaust, worn piston rings are often the culprit. Replacing the entire piston assembly ensures complete restoration of compression and engine performance.
Preventative Overhaul
For high-hour 5800 saws used in professional or heavy-duty applications, replacing the piston assembly proactively prevents unexpected field failures and extends the service life of the engine.
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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YOUR PROFESSIONAL ONE-STOP SOURCE
FOR 10000+ OUALITY PARTS
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FAQ
Q: How do I confirm this 48mm piston assembly fits my 5800 chainsaw?
A:Check your chainsaw model number and engine size. This 48mm piston fits 5800 series chainsaws with 58cc engines. Measure your existing piston diameter to verify 48mm before ordering.
Q: What is included in a complete piston assembly kit?
A: A standard piston assembly includes the piston, piston rings, wrist pin, and circlips. Some comprehensive kits may also include cylinder gaskets. Check the specific kit contents before ordering.
Q: When should I replace the piston assembly on my 5800 chainsaw?
A: Replace the piston assembly if the saw exhibits hard starting, loss of power, low compression, blue smoke, or visible piston scoring. Replacing the piston and rings together ensures proper sealing and prevents premature failure of new components.
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