This twist lock is a Genuine Stihl part for securing service covers on selected professional petrol chainsaws. Made from hard‐wearing polymer, it provides a positive, tool‐free quarter‐turn fastening that keeps the top shroud and air filter cover firmly in place under vibration. Designed for a precise fit on Stihl machines, it helps maintain correct alignment of cooling and filtration components, supporting safe and reliable running. Supplied under Manufacturer Part Number (MPN) 1144 141 2300, it is an ideal replacement for worn or missing hardware on models such as the MS 651 and MS 661. Choosing the genuine component ensures correct tolerances, consistent engagement, and dependable retention during regular use and servicing.

Key Features:
– Genuine Stihl OEM part (MPN 1144 141 2300) for assured fit and function
– Durable polymer construction engineered to withstand fuel, oil, heat, and vibration
– Quarter‐turn action holds covers securely to prevent loosening in use
– Direct replacement; installs by hand with no modification or special tools
– Helps keep air filter sealing and cooling airflow paths correctly seated
– Supports smooth operation by preventing cover movement and rattles
– Reduces downtime during servicing and routine filter checks
– Suitable for professional and heavy‐duty applications on compatible Stihl chainsaws

Typical Applications:
Securing the top shroud or air filter cover during daily operation, maintenance, and field servicing. Useful after air filter cleaning or replacement, spark plug checks, or general inspection where a reliable, quick-release fastening is needed to keep covers stable on high‐vibration chainsaws.

Also known as:
Locking knob, quarter‐turn fastener, cover latch, top shroud retainer, air filter cover clip, bayonet catch, cover fastener, rotary latch.

Fits Models:
MS 500i
MS 651
MS 661
MS 661 C

Alternate Part Numbers:
1144-141-2300, 11441412300

Product Specifications