503169171 Piston Kit For Husqvarna 55 46mm 503 16 91 71 OEM Replaces

Product Overview

This piston kit is a 46mm bore piston assembly designed specifically for Husqvarna 55 chainsaw engines. It replaces worn or damaged pistons to restore compression and power output. Ideal for DIY mechanics and professional repair shops servicing the popular Husqvarna 55 model.

Key Features & Performance

• 46mm bore diameter matches original Husqvarna 55 specifications
• Includes piston, rings, and wrist pin for a complete top-end rebuild
• Replaces OEM part numbers 503 16 91-71 and 503169171
• High-quality alloy construction withstands high RPM and heat
• Precision-machined ring grooves and pin bore for reliable sealing

Fitment & Compatibility

• Direct fit for Husqvarna 55 chainsaw (all variants using 46mm piston)
• Compatible with Husqvarna 55 Rancher and standard 55 models
• Does not fit Husqvarna 55 with larger 50mm bore

Common Uses

• Rebuilding Husqvarna 55 chainsaw engines after piston seizure or wear
• Restoring compression and cutting performance in professional and homeowner saws
• Replacing original equipment during top-end overhaul

Technical Specifications

• Part Number(s): 503 16 91-71, 503169171
• Bore Diameter: 46mm
• Included Components: Piston, rings, wrist pin
• Material: High-strength aluminum alloy

Frequently Asked Questions

Q: Does this kit include the piston rings? A: Yes, the piston rings and wrist pin are included in this piston kit for a complete replacement.

Q: Will this fit a Husqvarna 55 with a 50mm cylinder? A: No, this kit is only for 46mm bore cylinders; verify your cylinder bore size before purchasing.

Product appearance and specifications may vary slightly by batch. Compatibility may vary by serial number. Verify fitment before purchase.