echosari Chain Brake Assembly P021017220 for Echo CS-370/CS-400/CS-420ES OEM Replacement, Bulk-Packed

The Echo Genuine OEM P021017220 chain brake assembly is a factory replacement part designed to restore the chain-stopping safety function on Echo CS-370, CS-400, and CS-420ES chainsaws.

If your Echo chainsaw shows a worn or damaged chain brake lever or assembly, installing a correct OEM replacement helps bring back the intended safety operation and fit. This listing includes one new, bulk-packed P021017220 chain brake assembly manufactured to Echo specifications. Use it to match the original brake geometry, mounting points, and interaction with the saw’s clutch and throttle components.

How will this chain brake assembly fit my Echo saw?

The P021017220 is an exact OEM replacement produced for specific Echo models so bolt holes, lever travel, and contact surfaces align with the original part. Always compare the part number on your existing assembly with P021017220 prior to purchase.

• Compatible models: Echo CS-370, CS-400, CS-420ES.
• Includes one new P021017220 chain brake assembly, bulk packed.
• Designed to match factory mounting points and lever geometry.
• Not a universal or aftermarket-fit part—meant for listed Echo models.

What should I check before installing the replacement?

Confirm part number and visually inspect the saw’s brake area for broken pins, bent levers, or missing hardware. Refer to your Echo owner’s manual for the correct removal and installation steps and for any torque or alignment specifications required during reassembly.

• Verify your saw’s model and original part number match P021017220.
• Inspect related components: brake band, pins, springs, and clutch drum.
• Use manufacturer instructions for safe disassembly and reassembly.
• Tighten fasteners per manual and test brake engagement before cutting.

Will this part restore safety and performance?

Replacing a damaged or malfunctioning chain brake assembly with a genuine OEM unit restores the part’s intended mechanical relationship with the clutch and handle lever. While the assembly itself is built to OEM tolerances, full safety depends on correct installation and the condition of associated parts like the brake band and pins.

• OEM fit helps ensure predictable lever travel and braking response.
• New assembly reduces play and wear that can impair brake function.
• Test brake operation at idle before returning saw to service.
• Replace worn ancillary parts as needed for full restoration.

How is this item packaged and shipped?

The product ships as a new, bulk-packed replacement part to keep the price competitive while delivering a factory-original assembly. Packaging protects the part during transit but does not include retail display boxes or additional accessories.

• One new P021017220 chain brake assembly per order.
• Bulk packing—protected for shipping, no retail box included.
• Shipped with handling suitable for small metal/mechanical parts.
• Check contents on receipt and retain documentation for returns.

Who this part is for: professional landscapers, arborists, and do-it-yourself owners who use Echo CS-370, CS-400, or CS-420ES chainsaws and need an exact factory replacement for a damaged or worn chain brake. If you require a reliable OEM component to maintain original fit and function rather than a generic aftermarket substitute, this P021017220 assembly is intended for your saw. Always follow Echo’s service guidance and safety procedures when replacing and testing chain brake components.