Filter Base MS640, MS660, 066
SKU: Stihl | ST-1122 120 3402
- Regular price
- £10.92 Ex VAT
- £13.10 Inc VAT
- Sale price
- £10.92 Ex VAT
- Regular price
-
- £0.00 £13.10 Inc VAT
Free Delivery Over £75 *
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Product information & specifications
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
| Brand | STIHL |
|---|---|
| Product Type | Filter Base / Air Filter Housing Base |
| Manufacturer Part Number | 1122 120 3402 |
| Alternate Part Numbers | 1122-120-3402, 11221203402 |
| Material | Moulded polymer |
| Function | Mounts and seals the air filter assembly while supporting clean intake airflow |
| Suitable For | Selected STIHL professional chainsaws including 066, MS 640, MS 650 and MS 660 models |
| Part Type | Genuine OEM Replacement Part |
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.
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
| Brand | STIHL |
|---|---|
| Product Type | Filter Base / Air Filter Housing Base |
| Manufacturer Part Number | 1122 120 3402 |
| Alternate Part Numbers | 1122-120-3402, 11221203402 |
| Material | Moulded polymer |
| Function | Mounts and seals the air filter assembly while supporting clean intake airflow |
| Suitable For | Selected STIHL professional chainsaws including 066, MS 640, MS 650 and MS 660 models |
| Part Type | Genuine OEM Replacement Part |
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.
Delivery & Returns
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Standard Delivery
applies to eligible UK orders over £75 ex VAT.
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Standard Delivery
applies to eligible UK orders over £75 ex VAT.
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £6.00 + VAT
Order before 3:00pm (Monday–Friday) for next working day delivery
All UK orders are dispatched Monday–Friday and sent via a tracked courier service.
International Delivery
We ship worldwide from the UK.
- Europe from £10.00
Estimated delivery: 2–7 working days - Rest of the World from £12.00
Estimated delivery: 2–11 working days
Shipping costs and delivery times are calculated at checkout based on destination and order contents.
Customs, Duties & Taxes
International orders may be subject to local import duties, taxes, or customs charges.
When UPS is selected at checkout, applicable duties and taxes are included in the total price. For other shipping services, duties and taxes may be charged separately on delivery and are the responsibility of the recipient.
Customs processing times may affect delivery estimates.
Returns
30-Day Return Policy
- Items can be returned within 30 days of delivery
- Products must be unused and in original condition
- Return postage costs apply unless the item is faulty or incorrect
For full details, please visit our Shipping & Returns page.