Description
Overview:
The Oil Seal (Crankcase Side) for Partner/Husqvarna K650 is a non-genuine replacement seal for petrol cut-off/demolition saw engines. Fitted on the crankcase side of the crankshaft, it maintains crankcase pressure and prevents oil and fuel mix leakage, helping the engine run cleanly and start reliably. Built from a durable, oil- and heat-resistant elastomer with a robust construction suitable for heavy site use, it is a practical, cost-effective alternative to OEM parts. Ideal for routine servicing or engine rebuilds on models such as the K650 and K650 Active, it supports smooth operation, stable idle, and reduced contamination of the clutch and flywheel areas. Cross-referenced to OEM No. 503 26 02 04 for easy identification and ordering.
Key Features:
- Non Genuine Part compatible with Partner/Husqvarna specifications for the crankcase side
- Helps stop oil and fuel mix leaks, maintaining crankcase pressure and engine performance
- Made from oil- and fuel-resistant rubber compound designed for engine temperatures
- Direct-fit design for K650 variants for straightforward replacement with standard hand tools
- Supports smooth running, easier starting, and consistent idle after replacement
- Durable build suited to construction environments and frequent starts/stops
- Useful during crank rebuilds, bearing changes, or when diagnosing air leaks
- Cost-effective alternative to genuine parts without compromising fit or function
- Cross-reference: OEM 503 26 02 04 for quick part matching
- Supplied as a single crankcase-side oil seal
Typical Applications:
Used on the crankcase side of Partner/Husqvarna two-stroke cut-off saw engines to cure oil/air leaks, restore engine sealing, and protect internal components from dust ingress. Common during routine servicing, piston and bearing replacement, or when addressing poor idle, erratic revs, or hard starting on site, in workshops, and by mobile service engineers.
Also known as:
Crankshaft oil seal, crankcase oil seal, rotary shaft seal, radial oil seal, engine oil seal, lip seal, shaft seal, front/rear crank seal (depending on engine layout), sealing ring.
Fits Models:
K650, K650 Active, K650 MkII, K650 Super, Mark II
Alternate Part Numbers:
503 26 02 04, 503260204, M5540
Product Specifications
| L&S Part No. | 650 030 |
|---|---|
| Part Type | Non Genuine Part |
| Unit of Sale | 1 |
| Applications | K650, K650 Active, K650 MkII, K650 Super, K650Active, K650MkII, K650Super, Mark II, MarkII |
| Machine Type | Disc Cutters |
| Fits Brands | Husqvarna |
| Fits Models | K650 Super, Mark II |
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