The Mountfield / Atco / GGP Blade Boss 22.2 mm – 122463012/4 is a genuine replacement blade adapter (also known as a blade boss or blade driver) designed to securely mount and correctly align the cutting blade on compatible pedestrian lawn mowers. Manufactured to original equipment specifications, this component ensures accurate blade positioning, smooth rotation and reliable power transfer from the engine crankshaft to the blade.

Essential for safe and efficient mowing, the blade boss should be replaced if worn, cracked or damaged to maintain correct blade engagement and reduce vibration.

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Key Features

• Genuine OEM Blade Boss – Manufactured to Mountfield / Atco / GGP specifications for precise fit.

• 22.2 mm Centre Bore – Designed to match compatible mower crankshafts and blade fittings.

• Accurate Blade Alignment – Ensures correct blade positioning for smooth cutting performance.

• Durable Construction – Built to withstand rotational forces and regular mowing use.

• OEM Part Reference: 122463012/4 – Enables correct identification and confident ordering.

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Suitable Machines / Compatible Equipment

The Blade Boss 22.2 mm – 122463012/4 is used on a wide range of Mountfield, Atco and GGP pedestrian lawn mowers fitted with a 22.2 mm blade mounting system, including (but not limited to):

Mountfield Models:

• Mountfield HP41 / HP42 / SP41 / SP42

• Mountfield Princess 38 / Princess 42

• Mountfield Electress 38 / 42

• Mountfield Laser 41 / Laser 42 (selected variants)

Atco Models:

• Atco Liner 16 / Liner 16S / Liner 16SH

• Atco Quattro 16 / Quattro 16S

• Atco Clifton 16 (selected models)

GGP / Castelgarden / Stiga (Shared Platforms):

• Castelgarden and Stiga 41–42 cm pedestrian mowers using the same 22.2 mm blade boss system

Fitment Tip: Always confirm your mower’s blade centre bore size (22.2 mm) and compare your existing blade boss shape before ordering, as blade adapters vary by deck and engine configuration.

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Product Details

• Product Type: Blade Boss / Blade Adapter

• Centre Bore: 22.2 mm

• Part Reference: 122463012/4

• Compatibility: Mountfield, Atco & GGP pedestrian mowers (see list above)

• Application: Blade mounting and drive engagement

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Why Choose This Blade Boss

The Mountfield / Atco / GGP Blade Boss 22.2 mm – 122463012/4 is a critical component for safe and effective mower operation. Using a genuine replacement blade boss ensures correct blade alignment, reduces vibration and protects the engine crankshaft from damage. Ideal for servicing, repairs and blade replacements, this OEM part helps maintain reliable cutting performance and extends the life of your mower.