B45 Lawn Mower Cylinder Assembly – 40mm Bore Aluminum Kit
B45 Lawn Mower Cylinder Assembly – 40mm Bore Aluminum Kit
NEWONE BS45LA / B45 Lawn Mower Cylinder Assembly – 40mm Bore
Keep your B45-series lawn mower running at peak efficiency with this precision-engineered cylinder assembly. Manufactured from lightweight yet durable aluminium-copper alloy, this direct-fit replacement is designed specifically for New Dahua B45 / BS45LA series mowers, ensuring seamless integration with zero modifications required. Whether you're overhauling an ageing engine or replacing a damaged cylinder liner, this complete 5-piece kit has everything you need to get back to mowing fast.
Made in Mainland China.
Key Features
- Aluminium-Copper Alloy Construction: Delivers excellent heat dissipation and long-lasting durability under demanding mowing conditions.
- Precise 40mm Bore Size: Engineered to exact tolerances for optimal engine compression, performance, and fuel efficiency.
- Lightweight at ~391g: Easy to handle and install, reducing overall engine weight and simplifying the repair process.
- Direct Compatibility: Specifically designed for New Dahua B45 / BS45LA series lawn mowers for a guaranteed drop-in fit.
- Complete Kit Included: Comes with all essential components so you can complete the job without hunting for additional parts.
- Compact Dimensions: 10 × 7 × 5 cm — easy to store and ship without damage.
Specifications
| Product Name | Cylinder Assembly (BS45LA / B45) |
| Material | Aluminium-Copper Alloy |
| Bore Diameter | 40mm |
| Color | Gray |
| Dimensions | 10 × 7 × 5 cm |
| Weight | ~391g |
| Number of Pieces | 5 |
| Compatible Models | New Dahua B45 / BS45LA Series Lawn Mowers |
| Origin | Mainland China |
Package Contents
- 1 × Cylinder
- 1 × Valve Assembly
- 1 × Valve
- 2 × Rubber Rings
Important Notes
Actual color may vary slightly from product images due to monitor brightness and lighting conditions. Please allow a ±1–2mm tolerance for manual measurements.
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Frequently Asked Questions
Q: Which lawn mower models is this cylinder assembly compatible with?
A: This B45 cylinder assembly is specifically designed for New Dahua B45 and BS45LA series lawn mowers. The 40mm bore size and 5-piece kit are engineered for a direct, drop-in fit with these models. If you are unsure whether your mower is compatible, please check your mower's model number against B45 or BS45LA before ordering.
Q: What is included in the cylinder assembly kit?
A: The complete kit includes 1 cylinder, 1 valve assembly, 1 valve, and 2 rubber rings — everything you need for a full cylinder replacement on your B45 lawn mower engine.
Q: What material is the cylinder made from?
A: The cylinder is made from an aluminium-copper alloy, which provides an excellent balance of lightweight handling (~391g) and durability, ensuring reliable performance under continuous engine operation.
Q: Is this a direct OEM replacement or aftermarket part?
A: This is a high-quality aftermarket cylinder assembly manufactured by NEWONE, engineered to OEM specifications for the B45 / BS45LA series. It is designed to meet or exceed the performance of the original factory part.