Products Description
Brush Cutter Piston Assembly – Top-End Engine Rebuild Kit
Complete Piston Kit for 2-Stroke Brushcutter Engines
The piston assembly is a complete top-end engine rebuild kit designed for 2-stroke brushcutter engines, restoring compression and power when original components have suffered from wear, scoring, or seizure. These assemblies typically include the piston, piston rings, wrist pin, circlips, and often cylinder gaskets and needle bearings. Available in various bore sizes to match specific engine platforms, the piston assembly is a cost-effective alternative to purchasing a complete new powerhead, extending tool life and restoring reliable cutting performance for professional landscaping and grounds maintenance applications.
Technical Profiles & Materials
Complete Rebuild Solution – Comprehensive kits typically include the piston, piston rings (often 2 rings), wrist pin, circlips, needle bearing, and cylinder gaskets. Some kits also include carburettor, muffler, and cylinder base gaskets for complete top-end service.
Multiple Bore Sizes Available – Piston assemblies are available in various bore sizes to match specific engine displacements:
38mm: Fits Stihl FS200 brushcutters (OEM 41190201204)
39mm: Compatible with H235, H236, H240, 235E, 236E, 240E models
44mm: Fits TL52, BG520, and Mitsubishi TL52 copy engines
High-Quality Materials – Manufactured from durable aluminium alloy piston bodies with wear-resistant rings, designed to withstand high temperatures and friction. Professional manufacturing ensures high precision and stable performance.
Wide Model Compatibility – Fits a comprehensive range of brushcutters and brands:
| Brand/Platform | Compatible Models |
|---|---|
| Mitsubishi TL52 | TL50, TL52 copy engines, BC520, BG520 |
| Stihl | FS120, FS120R, FS200, FS200R, FS250, FS250R, FS300, FS350, FS400, FS450, FS480 |
| Husqvarna | 125R, 232R, 235R, 240RJ, 143RII |
| Shindaiwa | B45, C282, T282 |
| Universal | Demon, Geko, Texas, Einhell, Eurotec, and many more |
Restores Engine Performance – Addresses issues such as hard starting, loss of power, blue smoke from exhaust, and loss of compression caused by cylinder wall scoring, worn piston rings, piston seizure, or piston damage. Replacing the piston assembly restores optimal compression and smooth operation.
OEM and Aftermarket Options – Available as genuine OEM replacements (e.g., Husqvarna 545030301, Shindaiwa P021045970) or cost-effective aftermarket alternatives. Genuine OEM parts guarantee correct fitment and durability.
Technical Specifications
| # | Parameter | Specification Options |
|---|---|---|
| 1 | Bore Size | 38mm, 39mm, 44mm, and various |
| 2 | Kit Contents (Typical) | Piston, 2 piston rings, wrist pin, circlips, needle bearing, cylinder gaskets |
| 3 | Material | Aluminium alloy piston, steel rings |
| 4 | OEM Part No. (Husqvarna) | 545030301 (piston kit) |
| 5 | OEM Part No. (Shindaiwa) | P021045970 (piston kit) |
| 6 | OEM Part No. (Stihl) | 41190201204 (38mm cylinder-piston kit) |
| 7 | Weight (Typical) | Approx. 418g |
| 8 | Unit of Sale | 1 complete piston assembly or cylinder-piston kit |
Products Application
Brushcutter Engine Overhaul
Direct replacement when the brushcutter exhibits hard starting, loss of power, blue smoke from exhaust, or loss of compression. The piston assembly resolves issues caused by scoring on the cylinder walls, worn piston rings, piston seizure, or piston damage. This kit is a key component for a thorough engine repair (intermediate/major overhaul) and includes a perfectly matched piston and cylinder to ensure stable operation after repair.
Professional Landscaping & Grounds Maintenance
For contractors and grounds maintenance crews using high-hour brushcutters, replacing the piston assembly during scheduled engine servicing ensures reliable starting and consistent cutting performance. The complete kit simplifies top-end rebuilds by providing all necessary components in one package, reducing downtime for professional equipment.
Workshop & Preventative Maintenance
For repair centres servicing multiple brushcutter brands, piston assemblies simplify engine repairs by providing a complete drop-in replacement. Available in various bore sizes and configurations to suit different engine platforms, the all-in-one kit approach ensures correct component matching and reduces service time. Using a repair kit is cheaper than buying a new brush cutter and can significantly extend the tool's service life.
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
Verified Factory Excellence
BACKED BY 200+ TRUSTED FACTORY PARTNERS
Production process
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Customer Reviews
FAQ
Q: How do I confirm which piston assembly fits my brushcutter?
A:Check your engine model number on the identification plate and measure the cylinder bore size (e.g., 38mm, 39mm, 44mm). This piston assembly is compatible with specific models listed above, including Mitsubishi TL52 copy engines, Stihl FS series, Husqvarna 125R/232R/235R, and Shindaiwa B45/C282. It is crucial to confirm compatibility with your specific machine model before making a purchase to avoid incorrect orders and returns.
Q: What is included in a typical piston assembly kit?
A: A complete piston assembly kit typically includes the piston, 2 piston rings, wrist pin, circlips, needle bearing, and cylinder gaskets. Some comprehensive kits also include carburettor gaskets, muffler gaskets, and cylinder base gaskets for complete top-end service. Shindaiwa kits include two washers and two snap rings with the piston assembly.
Q: What are the symptoms that indicate the piston assembly needs replacing?
A: Common symptoms include significant loss of engine power, hard starting, blue smoke from the exhaust, and failure of the cylinder compression test after prolonged use. Visible scoring on the cylinder walls or piston skirt wear are also indicators. This kit resolves these issues in one step, restoring engine performance to optimal levels.
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