Air Filter for Stihl HS81, HS86 Hedgetrimmer
SKU: Stihl | ST-4237 120 1800
- Regular price
- £2.30 Ex VAT
- £2.76 Inc VAT
- RRP: £2.03 Ex VAT
- Sale price
- £2.03 £2.30 Ex VAT
- Regular price
-
- £2.44 £2.76 Inc VAT
- Was £2.03 Ex VAT
Free Standard UK Delivery Over £75 +VAT
Easy Returns
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Product information & specifications
Is your Stihl HS81 or HS86 hedgetrimmer not performing at its peak? A clogged air filter could be the culprit. A fresh air filter is essential for maintaining optimal engine performance, reducing emissions, and extending the life of your Stihl trimmer.
This high-quality air filter is specifically designed for the Stihl HS81 and HS86 hedgetrimmers. It features a precisely engineered paper element that effectively traps dust, dirt, and debris before they can enter the engine. This protects internal components from wear and tear, ensuring smooth operation and consistent power.
Genuine Stihl Part.
OEM No. 4237 120 1800.
Suitable for the Following Applications:
HS81R, HS81RC, HS81T, HS81TC, HS86R, HS86T
Is your Stihl HS81 or HS86 hedgetrimmer not performing at its peak? A clogged air filter could be the culprit. A fresh air filter is essential for maintaining optimal engine performance, reducing emissions, and extending the life of your Stihl trimmer.
This high-quality air filter is specifically designed for the Stihl HS81 and HS86 hedgetrimmers. It features a precisely engineered paper element that effectively traps dust, dirt, and debris before they can enter the engine. This protects internal components from wear and tear, ensuring smooth operation and consistent power.
Genuine Stihl Part.
OEM No. 4237 120 1800.
Suitable for the Following Applications:
HS81R, HS81RC, HS81T, HS81TC, HS86R, HS86T
Delivery & Returns
Christmas Returns (Extended)
To give you extra peace of mind over Christmas:
- Orders placed between 10 October and 24 December 2025 can be returned up to 26 January 2026 (excluding Sale items)
- Orders placed from 25 December 2025 onwards are covered by our standard 30-day return policy
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Delivery on orders over £50 + VAT
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £5.00 + 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.
Christmas Returns (Extended)
To give you extra peace of mind over Christmas:
- Orders placed between 10 October and 24 December 2025 can be returned up to 26 January 2026 (excluding Sale items)
- Orders placed from 25 December 2025 onwards are covered by our standard 30-day return policy
UK Delivery
Fast, reliable delivery from our UK warehouse.
- FREE UK Delivery on orders over £50 + VAT
Estimated delivery: 2–4 working days
- UK Standard Delivery from £3.60 + VAT
Estimated delivery: 2–4 working days
- Next Working Day Delivery – £5.00 + 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.

