Hyway Husqvarna 55, 51 cylinder kit 46mm – Closed port Rebuild Kit

Hyway Premium Titanikel-Plated 46mm Complete Rebuild Kit for Husqvarna 55 Rancher

Rebuild your Husqvarna 55 or 55 Rancher with the toughest aftermarket cylinder available — the
Hyway Titanikel-Plated 46 mm Complete Rebuild Kit.
A direct drop-in replacement for OEM part 503169172 (503 16 91-72), this kit also serves as the classic, proven power upgrade when installed on the Husqvarna 51.

Now includes every service part you’ll need during the job — fuel filter, spark plug, bearings, seals, gaskets, and air filter — so your saw comes back together perfectly the first time.

Key Features:

• Premium Hyway Titanikel-plated cylinder with 46 mm bore
• Replaces OEM part number 503169172 (503 16 91-72)
• Direct bolt-on fit for Husqvarna 55 & 55 Rancher (all years)
• Popular power upgrade for Husqvarna 51
• Decompression valve hole already machined
• Precision diamond-polished bore for ultra-low friction
• Far superior durability and heat resistance vs. standard Nikasil

Complete Kit Includes:

• Cylinder, piston, rings, wrist pin, circlips
• Fuel filter (503 44 32-01)
• NGK BPMR7A spark plug (577 48 40-01)
• Needle cage bearing (510 45 16-01)
• Full gasket set (501 76 18-02)
• Crankshaft oil seals ×2 (505 27 57-19)
• Air filter assembly (503 89 81-01)

What is Titanikel Plating?

Titanikel plating is a sophisticated technology developed by Hyway, involving a blend of titanium and nickel applied through a high-temperature steam plating process at 900 to 1000 degrees Celsius. This creates a robust, wear-resistant surface perfect for engine components.

Titanikel Plating Process:

The process starts with multi-composite electroplating, coating the cylinder with a titanium-nickel composite. After plating, the surface is polished with diamond tools to achieve an exceptionally smooth finish due to titanium’s high strength.

Benefits of Titanikel Plating:

• High Temperature Resistance: Can handle extreme temperatures without breakdown
• Durability: Titanium-nickel blend dramatically extends cylinder life
• Chemical Resistance: Excellent protection against corrosion
• Smooth Operation: Ultra-low friction reduces wear and improves efficiency
• Optimal Strength-to-Weight Ratio: Perfect balance for professional saws

Compatibility:

Direct replacement for:

• Husqvarna 55
• Husqvarna 55 Rancher

Popular power upgrade for:

• Husqvarna 51

Workshop Manuals:

• Husqvarna 51 / 55 Workshop Manual

Parts Diagrams:

• Husqvarna 55 Rancher Parts Diagram

Turn your 55 Rancher into a torque monster — or give your 51 the extra grunt it’s always needed — with the
Hyway Titanikel 46 mm Complete Rebuild Kit at the best price from HL SUPPLY!