Annolai 450 Chainsaw Ignition Coil – Replaces 505427201, 573935701, 544243801 for Husqvarna 435-450, Jonsered CS2240-CS2250

Overview

The Annolai 450 Chainsaw Ignition Coil is designed to be a reliable replacement for a range of common ignition components. It specifically replaces several part numbers including 505427201, 573935701, and 544243801, and targets Husqvarna models such as 435, 435E, 445, 445E, 450, and 450E, as well as Jonsered CS2240/CS2240S/CS2245/CS2245S/CS2250/CS2250S and Poulan RedMax saws. This broad compatibility helps you keep your chainsaw ready for service without hunting for a precise match.

Crafted to align with the original design intent, the coil is built to deliver consistent spark energy across typical operating conditions. While not a guarantee of performance, the component’s design aims to support reliable ignition and steady running under normal use, contributing to a smoother startup sequence and steadier power delivery.

Key Benefits in Real-World Use

When you’re in the shed or on a job site, a dependable ignition coil can make a noticeable difference in how your saw starts and performs. This coil emphasizes compatibility, ease of replacement, and practical performance in everyday maintenance scenarios.

• Broad compatibility with major brands and model ranges reduces search time during repairs.
• Simple swap process designed to minimize downtime and get you back to work faster.
• Design focuses on stable ignition energy to support easy starts and smoother operation under load.

Compatibility and Coverage

Designed to replace the listed part numbers, this coil covers a wide span of Husqvarna and related models, including the popular 435/435E/445/445E/450/450E lines, along with Jonsered CS2240/CS2240S/CS2245/CS2245S/CS2250/CS2250S and Poulan RedMax chainsaws. If you’re upgrading an older unit or refreshing a maintenance kit, this coil offers a practical option that aligns with common OEM specifications.

• Husqvarna 435, 435E, 445, 445E, 450, 450E family compatibility.
• Jonsered CS2240, CS2240S, CS2245, CS2245S, CS2250, CS2250S compatibility.
• Poulan/RedMax chainsaw compatibility included in coverage scope.

Installation and Maintenance

The coil is designed for straightforward replacement, making it suitable for DIY maintenance or quick professional service. Proper installation helps ensure secure electrical connections and dependable ignition timing under typical conditions.

• Easy-to-follow swap for many compatible saws.
• Durable construction intended to withstand saw vibrations and outdoor work environments.

What You Might Expect

Users often notice easier cold starts and steadier performance when a fresh ignition coil is installed, especially on older units or after other ignition components have seen extensive use. Results can vary with overall machine condition and fuel system health.