Description
Overview:
This sealing is a Genuine Husqvarna part for preventing air, fuel, and oil leaks in small petrol equipment. Built from oil‐resistant elastomer in a compact black radial design, it maintains a tight seal around rotating shafts to protect performance and reduce wear. It is engineered for precise OEM fit on Husqvarna tools, including the 543XP and 543XPG chainsaws, and is also used across selected trimmers, brushcutters, blowers, and hedge trimmers. By restoring correct sealing, it helps stabilise idle, improves starting, and protects internal components from dust and moisture ingress. Supplied under Husqvarna MPN 504 12 15‐01 (504121501), this part is suitable for routine maintenance or repairs where a worn or hardened seal is causing leaks or loss of performance.
Key Features:
- Genuine Husqvarna part for correct fit and reliable operation
- Oil‐ and fuel‐resistant elastomer for long service life
- Maintains airtight and fluid‐tight sealing around rotating shafts
- Helps preserve engine tuning, starting, and overall efficiency
- Suitable for use across multiple Husqvarna handheld machines
- Designed to cope with vibration, heat cycles, and dust exposure
- Straightforward replacement when servicing worn or leaking seals
Typical Applications:
Replacing a worn or leaking shaft seal during engine or gearbox servicing on chainsaws, brushcutters, grass trimmers, blowers, and hedge trimmers. Commonly used on crankcase, clutch side, gearhead, or fan housing locations where a reliable rotary seal is required to prevent air ingress and oil/fuel egress.
Also known as:
Oil seal, shaft seal, crankshaft seal, crankcase seal, radial lip seal, rotary shaft seal, engine seal, drive‐shaft seal. These terms are often used for the same style of rotary elastomer seal used to control air and fluid leaks around moving shafts.
Fits Models:
130BT, 130BTs, 143AE15, 143RII, 143RS, 143RST, 226HD60S, 226HD75S, 226HS75S, 226HS99S, 233R, 233RJ, 236R, 243R, 243RJ, 325HE3, 325HE4, 426 Ex, 426 LST, 426Ex, 426LST, 430 LS, 430LS, 443RB, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525BX, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LS Mark II, 525LST, 525LST Mark II, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 525RXTMarkII, 530BT, 531RB, 531RS, 532RBS, 533RS, 541RB, 541RS, 541RST, 542RBS, 543AE15, 543RB, 543RBK, 543RBS, 543RBX, 543RS, 543XP, 543XPG
Alternate Part Numbers:
504 12 15-01, 504121501
Product Specifications
| L&S Part No. | 504 12 15 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 504121501 |
| Unit of Sale | 1 |
| Applications | 130BT, 130BTs, 143AE15, 143RII, 143RS, 143RST, 226HD60S, 226HD75S, 226HS75S, 226HS99S, 233R, 233RJ, 236R, 243R, 243RJ, 325HE3, 325HE4, 426 Ex, 426 LST, 426Ex, 426LST, 430 LS, 430LS, 443RB, 524 L, 524L, 525 LS Mark II, 525 LST Mark II, 525BX, 525HE3, 525HE4, 525HF3S, 525L, 525LK, 525LS, 525LS Mark II, 525LST, 525LST Mark II, 525P4S, 525P5S, 525PT5S, 525RJD, 525RJX, 525RK, 525RS, 525RX, 525RX Mark II, 525RXT, 525RXT Mark II, 525RXTMarkII, 530BT, 531RB, 531RS, 532RBS, 533RS, 541RB, 541RS, 541RST, 542RBS, 543AE15, 543RB, 543RBK, 543RBS, 543RBX, 543RS, 543XP, 543XPG |
| Machine Type | Chainsaws, Backpack Blowers, Brushcutters, Hedgetrimmers |
| Fits Brands | Husqvarna |
| Fits Models | 226HD60S | 226HD75S | 226HS75S | 325HE3 | 325HE4 | 525HF3S | 525P4S | 525P5S | 525PT5S | 543XP | 543XPG | 226HS99S | 143RII | 233R | 233RJ | 236R | 243R | 243RJ | 130BTs | 525BX | 530BT | 443RB | 525L | 525LK | 525LS | 525LST | 525RJD | 525RJX | 525RK | 525RS | 525RX | 525RXT | 531RS | 532RBS | 533RS | 541RS | 541RST | 542RBS | 543RBK | 543RBX | 543RS | 143AE15 | 543AE15 | 426 Ex | 426 LST | 430 LS | 524 L | 525HE3 | 525HE4 | 525 LS Mark II | 525 LST Mark II | 525RX Mark II | 525RXT Mark II | 531RB | 541RB | 543RB | 543RBS | 143RS | 143RST |
