Description
Overview:
This genuine Stihl spring (part number 4203 708 0800) is a precision coil spring made from high‐tensile spring steel. It provides the correct return and tensioning forces in key mechanisms so your machine operates smoothly and predictably. Designed for Stihl backpack blowers and sprayers such as the BR340 and BR420, and used across several other handheld tools, it offers an exact OEM fit with reliable performance. Replacing a fatigued or broken spring helps prevent sticking controls, poor response, and additional wear on related parts. As a Genuine Stihl Part, it integrates directly into the original assembly and is suitable for routine servicing or repairs in both workshop and on‐site environments.
Key Features:
- Genuine Stihl part (4203 708 0800) for assured compatibility and performance
- Precision‐formed coil spring in durable spring steel for long service life
- Restores correct return/tension for dependable machine operation
- Direct‐fit OEM geometry; no modification or shimming required
- Helps prevent sticking controls and inconsistent response caused by weak springs
- Suitable for routine maintenance or repair after fatigue, loss, or breakage
- Used across selected Stihl blowers, sprayers, brushcutters, hedge trimmers, and attachments
- Straightforward to fit with basic hand tools
- Supports reliable performance for professional, DIY, and fleet use
Typical Applications:
Used when controls or mechanisms fail to return properly, after a spring has stretched, broken, or gone missing, or during scheduled overhauls. Ideal for restoring smooth operation in Stihl backpack blowers and sprayers, and for proactive maintenance across mixed-tool fleets to minimise downtime.
Also known as:
Return spring, tension spring, coil spring, OEM Stihl spring, BR420 spring, backpack blower spring, sprayer spring, replacement spring for Stihl handheld equipment.
Fits Models:
BR340, BR340L, BR380, BR420, BR420C, BR45C, FR220, FR350, FR450, FR480, FR480C, FR85, FR85T, HS45, KR85, KR85 Attachment, SR340, SR420
Alternate Part Numbers:
4203-708-0800, 42037080800
Product Specifications
| L&S Part No. | 4203 708 0800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42037080800 |
| Unit of Sale | 1 |
| Applications | BR340, BR340L, BR380, BR420, BR420C, BR45C, FR220, FR350, FR450, FR480, FR480C, FR85, FR85T, HS45, KR85, KR85 Attachment, SR 340, SR 420, SR340, SR420 |
| Machine Type | Backpack Blowers, Backpack Brushcutters |
| Fits Brands | Stihl |
| Fits Models | HS45 | BR45C | FR85T, FR85 | FR350, FR450, FR480, FR480C | KR85 Attachment | SR 340, SR 420 |
