Gasket for Stihl FS40, FS50 Brushcutter
SKU: Stihl | ST-4128 129 0900
- Regular price
- £1.92 Ex VAT
- £2.30 Inc VAT
- Sale price
- £1.92 £1.92 Ex VAT
- Regular price
-
- £2.30 £2.30 Inc VAT
- Was £1.92 Ex VAT
Free Delivery Over £75 *
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Trusted UK Arborist Retailer
30-Day Easy Returns
Product information & specifications
Breathe New Life into Your Stihl Brushcutter: Replacement Gasket for FS40 & FS50 Models
Is your Stihl FS40 or FS50 brushcutter not running as smoothly as it once did? A worn-out gasket could be the culprit. This replacement gasket is specifically designed to fit these Stihl models, providing a reliable seal between critical engine components.
Keep Your Engine Running Strong
Gaskets play a vital role in maintaining engine performance. They create a tight seal that prevents leaks of fuel, air, and oil. Over time, gaskets can deteriorate due to heat, vibration, and exposure to fuel. This can lead to a number of problems, including:
- Loss of power: If air leaks into the engine, it can cause a lean fuel mixture, resulting in power loss and engine hesitation.
- Increased fuel consumption: Leaky gaskets can also allow unmetered air into the engine, which can lead to inefficient fuel burning and higher fuel consumption.
- Hard starting: Air leaks can make it difficult for the engine to achieve the proper air-fuel mixture for starting.
Suitable for the Following Machines: FS 40, FS 40 C, FS 50, FS 50 C, SH 56, SH 56 C, SH 86, SH 86 C, FR 350, FR 450, FR 480, FR 480 C, SP 451, SP 481, SP 400, SP 450, BR 200, FC 70 C, BG 86, BG 86 C, FS 56, FS 56 C, FS 56 R, FS 56 RC, FS 400, FS 450, FS 480, HT 250, FR 350, FR 450, FR 480, FR 480 C, FS 70 C, FS 70 RC, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FT 250, FS 300, FS 350, KM 56 C, KM 56 RC, FC 56 C, BT 121, FS 120, FS 120 R, FS 200, FS 200 R, FS 250, FS 250 R, HT 56 C, SP 200, BG 56, BG 56 C, BG 66, BG 66 C, BT 120 C
Breathe New Life into Your Stihl Brushcutter: Replacement Gasket for FS40 & FS50 Models
Is your Stihl FS40 or FS50 brushcutter not running as smoothly as it once did? A worn-out gasket could be the culprit. This replacement gasket is specifically designed to fit these Stihl models, providing a reliable seal between critical engine components.
Keep Your Engine Running Strong
Gaskets play a vital role in maintaining engine performance. They create a tight seal that prevents leaks of fuel, air, and oil. Over time, gaskets can deteriorate due to heat, vibration, and exposure to fuel. This can lead to a number of problems, including:
- Loss of power: If air leaks into the engine, it can cause a lean fuel mixture, resulting in power loss and engine hesitation.
- Increased fuel consumption: Leaky gaskets can also allow unmetered air into the engine, which can lead to inefficient fuel burning and higher fuel consumption.
- Hard starting: Air leaks can make it difficult for the engine to achieve the proper air-fuel mixture for starting.
Suitable for the Following Machines: FS 40, FS 40 C, FS 50, FS 50 C, SH 56, SH 56 C, SH 86, SH 86 C, FR 350, FR 450, FR 480, FR 480 C, SP 451, SP 481, SP 400, SP 450, BR 200, FC 70 C, BG 86, BG 86 C, FS 56, FS 56 C, FS 56 R, FS 56 RC, FS 400, FS 450, FS 480, HT 250, FR 350, FR 450, FR 480, FR 480 C, FS 70 C, FS 70 RC, FS 38, FS 45, FS 45 C, FS 45 L, FS 46, FS 46 C, FT 250, FS 300, FS 350, KM 56 C, KM 56 RC, FC 56 C, BT 121, FS 120, FS 120 R, FS 200, FS 200 R, FS 250, FS 250 R, HT 56 C, SP 200, BG 56, BG 56 C, BG 66, BG 66 C, BT 120 C
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.

