Description
Overview:
This genuine Stihl gear housing is a replacement casing for the drive gears on extended reach hedgetrimmers, identified by OEM No. 4230 640 0503. Built from durable metal for strength and heat dissipation, it protects and supports the gear set at the cutting head, helping your tool run smoothly under regular use. The housing is engineered for correct alignment and secure sealing of the gear cavity, maintaining stable performance and reducing wear. It is designed for Stihl long‐reach machines including the HL75 and HL90, delivering a proper fit with factory tolerances. Suitable for professional and domestic users, it restores reliability when the original housing is cracked, worn, or leaking, and it integrates with existing Stihl components and fixings.
Key Features:
- Genuine Stihl part for assured fit and performance (OEM 4230 640 0503)
- Robust metal construction to protect gears and withstand impacts
- Precision-cast housing maintains gear alignment for smooth operation
- Helps retain lubricant within the gear cavity for consistent running
- Straightforward replacement using existing hardware and setup
- Designed for extended reach heads used at various working angles
- Corrosion-resistant finish suited to outdoor garden and site conditions
- Supports long service life when paired with correct maintenance
Typical Applications:
Used to replace damaged or worn gear housings on Stihl long-reach hedgetrimmers during routine servicing or after impact damage. Helps resolve play in the head, noise from misaligned gears, or oil/grease leakage. Suitable for professional landscaping, grounds maintenance, and domestic hedge care where reliable trimming at height and reach is required.
Also known as:
Gear head housing, gearbox housing, gear case cover, hedgetrimmer gear case, head gearbox shell, bevel gear housing, trimmer gear head casing.
Fits Models:
FH-KM, FH-KM 135 deg, FH75, FHKM, HEL 700, HEL 700 K, HEL700, HL 95, HL 95 K, HL-KM, HL-KM 0-135 deg, HL100, HL100K, HL135, HL75, HL75K, HL90, HL90K, HL95, HL95K, HLE 71, HLE 71 K, HLE71, HLE71K, HLKM
Alternate Part Numbers:
4230-640-0503, 42306400503
Product Specifications
| L&S Part No. | 4230 640 0503 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42306400503 |
| Unit of Sale | 1 |
| Applications | FH-KM, FH-KM 135 deg, FH75, FHKM, HEL 700, HEL 700 K, HEL700, HL 95, HL 95 K, HL-KM, HL-KM 0-135 deg, HL100, HL100K, HL135, HL75, HL75K, HL90, HL90K, HL95, HL95K, HLE 71, HLE 71 K, HLE71, HLE71K, HLKM |
| Machine Type | Long Reach Hedgetrimmers, Petrol Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | FH-KM 135 deg | HL-KM 0-135 deg | HL75, HL75K | HL90K, HL90, HL95K | HL100, HL100K | HEL 700 K | HEL 700 | HL135 | HL 95, HL 95 K | HLE 71, HLE 71 K | FH 135° | HL 135° |
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