STIHL Filter Base for 066, MS 640 & MS 660 Chainsaws - 1122 120 3402

The STIHL Filter Base for 066, MS 640 and MS 660 chainsaws is a genuine OEM replacement component designed to mount and seal the air filter assembly on the intake side of compatible professional STIHL petrol chainsaws. Manufactured from durable moulded polymer, this air filter base helps maintain correct filter seating, stable airflow and effective engine protection during demanding cutting work.

Built to STIHL original equipment standards, this replacement filter base helps keep dust, debris and contamination away from the carburettor and cylinder. It is ideal for professional forestry workers, arborists, landscapers, site teams and experienced domestic users replacing a cracked, warped, worn or damaged air filter base to restore reliable starting, smooth idling and consistent cutting performance.

Key Features

• Genuine STIHL OEM filter base for assured compatibility and fit
• Manufacturer Part Number: 1122 120 3402
• Designed for selected STIHL professional petrol chainsaws
• Mounts and seals the air filter assembly on the intake side of the engine
• Durable moulded polymer construction for long service life
• Helps maintain clean airflow and effective filtration
• Protects the carburettor and cylinder from dust and debris ingress
• Resistant to vibration, fuel mist, oil and heat during chainsaw use
• Direct-fit replacement using the original air filter and fasteners
• Supports consistent starting, idling, throttle response and cutting efficiency

Typical Applications

This STIHL filter base is used during routine servicing or repair of compatible professional chainsaws where the original air filter base is cracked, warped, worn or no longer sealing correctly. It is suitable for forestry, arboriculture, landscaping, construction site work, firewood processing and heavy-duty cutting applications where clean intake air and dependable engine performance are essential.

Technical Specification

Fits Models

• STIHL 066
• STIHL MS 640
• STIHL MS 650
• STIHL MS 660
• STIHL MS640
• STIHL MS650
• STIHL MS660

Also Known As

• STIHL air filter housing
• STIHL air filter support
• STIHL filter mount
• STIHL airbox base
• STIHL air cleaner base
• STIHL intake base plate
• STIHL carburettor intake housing
• STIHL MS 660 filter base
• STIHL MS 640 air filter base
• STIHL 066 filter housing base

Why Choose Genuine STIHL Parts?

Genuine STIHL parts are manufactured to match the original specification for fit, sealing, durability and performance. Choosing an original STIHL filter base helps maintain correct air filter seating, carburettor protection and clean intake airflow, reducing the risk of poor fitment, air leaks, contamination or premature engine wear.

Explore More

• STIHL Spare Parts
• STIHL Parts Finder
• Chainsaw Parts
• STIHL Chainsaw Chain Selector
• Chain Sharpening Tools

FAQs

Is this a genuine STIHL filter base?

Yes, this is a genuine STIHL OEM filter base manufactured to original equipment standards.

What is the part number for this STIHL filter base?

The manufacturer part number is 1122 120 3402. It may also be listed as 1122-120-3402 or 11221203402.

Which STIHL chainsaws does this filter base fit?

This filter base fits selected STIHL professional chainsaws including 066, MS 640, MS 650 and MS 660 models.

What does the air filter base do?

The air filter base mounts and seals the air filter assembly, helping keep dust and debris away from the carburettor and cylinder while maintaining stable intake airflow.

When should this filter base be replaced?

Replace the filter base if it is cracked, warped, worn, damaged or no longer allows the air filter to seat and seal correctly.

英国標準配送料 £3.60+VAT
お届け予定日数 2～4日

50ポンド+VAT以上のご注文で送料無料
お届け予定日数 2～4日

翌日配送 - £5.00+VAT
月曜日～金曜日の午後3時までに注文した場合、1日で配達予定