Husqvarna 503445101 Replacement Sleeve Chainsaw

Product Description

The HUSQVARNA 503445101 is a replacement cylinder sleeve designed for professional-grade Husqvarna chainsaw engines. The sleeve serves as the precision-machined bore surface that guides piston travel and seals combustion gases within the engine cylinder. Proper cylinder sleeve condition is critical to compression, power output, and long-term engine health. This part is a direct OEM-style replacement, restoring worn or scored cylinders to factory specification. Installation requires engine disassembly and is performed by experienced small-engine technicians or power equipment service professionals.

This cylinder sleeve is used in top-handle and rear-handle Husqvarna chainsaws commonly found in professional logging, land clearing, and arborist applications. The compatible models span several generations of Husqvarna professional saws, making this sleeve a useful stocking part for shops that service Husqvarna equipment. The part measures 2.3 inches by 6.0 inches by 1.25 inches, fitting within the cylinder assembly of the listed compatible units.

Key Features

• Direct OEM-style replacement for worn or damaged cylinder sleeves
• Precision-machined bore surface for consistent piston-to-wall clearance
• Compact dimensions: 2.3 inches x 6.0 inches x 1.25 inches
• Compatible across multiple Husqvarna professional chainsaw models
• Restores compression and combustion seal in worn engine assemblies

Compatibility

Compatible with the following Husqvarna chainsaw models: 272XP, 268K, 61, 272S, 272K, 268, and 272.

Installation Notes

Cylinder sleeve replacement is a precision engine rebuild procedure performed by qualified small-engine technicians. The engine must be fully disassembled and all fuel must be drained before beginning work. Proper sleeve installation typically requires a hydraulic or arbor press and may require heating the cylinder housing for correct fitment. Always inspect the piston, rings, and connecting rod for wear before reinstalling the engine assembly.