Description
Overview:
The Gearbox Cover for Stihl angle drives is a genuine Stihl replacement part designed to shield and seal the gear head on compatible hedge trimmer and long‐reach hedge trimmer attachments. Built from robust metal with a hardwearing finish, it protects the internal gears, bearings, and seals from impact, debris, and moisture, helping to maintain reliable lubrication and smooth running. This cover is engineered for a precise fit on Stihl HL-KM 0-145 and FH-KM 145 setups, among others, and matches the original fixing points for straightforward replacement. As an OEM component, it meets Stihl's manufacturing tolerances for durability and alignment. OEM part number 4243 640 5800. Genuine Stihl part for assured compatibility and performance.
Key Features:
- Genuine Stihl OEM component for consistent fit and function
- Exact-match geometry for HL-KM 0-145 and FH-KM 145 angle drive gear heads
- Durable metal construction with a corrosion-resistant finish
- Helps protect gears, bearings, and seals from damage and contamination
- Maintains a secure seal to support correct lubrication and smooth operation
- Direct replacement using existing mounting hardware where applicable
- Made to Stihl tolerances for alignment and longevity
- Suitable for restoring performance after impact, cracks, or thread damage
- Clear identification with OEM reference 4243 640 5800
- Supports longer service intervals and reduced downtime
Typical Applications:
Used during repair and servicing of Stihl angle drive gear heads to replace a cracked, worn, or leaking cover. Common in routine maintenance, rebuilds, and after impact damage to restore sealing, protect drive components, and prevent grease loss on hedge trimmer and long‐reach hedge trimmer attachments.
Also known as:
Gearbox cap, gear head cover, angle drive cover, gearcase cover, bevel gear cover, gear housing lid, head casing, drive head cover.
Fits Models:
FH-KM 145, FH-KM 145 deg, FH-KM145, FHKM145, HL-KM 0, HL-KM 0 deg, HL-KM 0-145, HL-KM0, HL-KM0-145, HL56K, HL91K, HL91KC, HL92C, HL92KC, HL94, HL94C, HL94K, HL94KC, HLA 135, HLA 135 K, HLA135, HLA135K, HLKM0
Alternate Part Numbers:
4243-640-5800, 42436405800
Product Specifications
| L&S Part No. | 4243 640 5800 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Stihl |
| OEM No. | 42436405800 |
| Unit of Sale | 1 |
| Size | Overall Length: 135mm Overall Width: 74mm |
| Applications | FH-KM 145, FH-KM 145 deg, FH-KM145, FHKM145, HL-KM 0, HL-KM 0 deg, HL-KM 0-145, HL-KM0, HL-KM0-145, HL56K, HL91K, HL91KC, HL92C, HL92KC, HL94, HL94C, HL94K, HL94KC, HLA 135, HLA 135 K, HLA135, HLA135K, HLKM0 |
| Machine Type | Long Reach Hedgetrimmers |
| Fits Brands | Stihl |
| Fits Models | FH-KM 145 deg | HL-KM 0 deg | HL-KM 0-145 | HL56K | HL91K, HL91KC | HL92C, HL92KC | HL94, HL94C, HL94K, HL94KC | HLA 135, HLA 135 K | FH 145° | HL 0° | HL 145° |
