Description
Overview:
This exhaust/muffler mounting screw is a Husqvarna replacement fastener used to secure the exhaust assembly on petrol-powered machines such as chainsaws and brushcutters. Made from durable, heat-resistant steel, it is designed to hold firmly under vibration and high exhaust temperatures, helping to maintain a gas-tight seal and correct back pressure. It is suitable for a wide range of Husqvarna equipment, including popular chainsaw models like the 135 and 140, as well as the 242. Replacing worn, corroded, or missing exhaust screws helps prevent leaks, noise increase, and loss of performance. Identified by MPN 725533355, it offers a direct-fit solution where this reference is specified, supporting reliable everyday use in workshop servicing and field repairs.
Key Features:
- Heat- and vibration-resistant steel for reliable clamping of the exhaust assembly
- Direct-fit replacement to match the specified thread and length for Husqvarna applications
- Helps prevent exhaust leaks, performance loss, and excess noise by maintaining seal integrity
- Designed for repeated removal/refit during routine servicing without rounding or stretching easily
- Corrosion-resistant finish suitable for outdoor and high-temperature environments
- Straightforward installation with standard hand tools, reducing downtime
- Suitable for chainsaws, brushcutters, clearing saws, pole pruners, and cut-off saws in the listed range
- Replaces damaged, seized, or lost fasteners during muffler changes, decarbonising, or engine rebuilds
Typical Applications:
Used during exhaust or muffler servicing, decarbonising, gasket replacement, and engine overhaul on Husqvarna machines. Ideal when refurbishing the exhaust outlet, restoring lost fixings, or addressing stripped or corroded screws. Helps keep the exhaust securely mounted for consistent performance and emissions control in forestry, landscaping, construction, and grounds maintenance.
Also known as:
Muffler bolt, silencer bolt, exhaust mounting screw, muffler fixing screw, exhaust fastener, silencer screw, exhaust clamp screw.
Fits Models:
135, 135E, 135R, 140, 140E, 226R, 241R, 241RJ, 242, 246, 250R, 250RX, 252RX, 265RX, 3120, 3120XP, 323P, 325P, 326P, 327P, 327P4, 327P5x, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 340, 340E, 345, 345E, 346XP, 350, 353, 355FRM, 355FX, 355FXT, 355RX, 356BF, 356BT, 357XP, 359, 362XP, 371K, 371XP, 375K, 385, 385XP, 390XP, 394XP, 395XP, 42, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 525P4S, 525P5S, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, 545F, 545FXAT, 545FXTAT, 545RXT, 545RXTAT, 555FRM, 555FX, 555FXT, 555RXT, 570, 570II, 575XP, 576XP, 576XP AutoTune, 576XPAutoTune, PP 455 E, PP455E, Saw Attachment
Alternate Part Numbers:
725 53 33-55, 725533355
Product Specifications
| L&S Part No. | 725 53 33 55 |
|---|---|
| Manufacturer | Husqvarna |
| OEM No. | 725533355 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 135R, 140, 140E, 226R, 241R, 241RJ, 242, 246, 250R, 250RX, 252RX, 265RX, 3120, 3120XP, 323P, 325P, 326P, 327P, 327P4, 327P5x, 333R, 333RJ, 335 LS, 335 LX, 335FR, 335LS, 335LX, 335R, 335RJX, 335RX, 336FR, 336FRD, 336RK, 340, 340E, 345, 345E, 346XP, 350, 353, 355FRM, 355FX, 355FXT, 355RX, 356BF, 356BT, 357XP, 359, 362XP, 371K, 371XP, 375K, 385, 385XP, 390XP, 394XP, 395XP, 42, 435, 435E, 435EII, 435II, 440E, 440EII, 440II, 525P4S, 525P5S, 535 LK, 535FBX, 535LK, 535LS, 535RJ, 535RX, 535RXT, 545F, 545FXAT, 545FXTAT, 545RXT, 545RXTAT, 555FRM, 555FX, 555FXT, 555RXT, 570, 570II, 575XP, 576XP, 576XP AutoTune, 576XPAutoTune, PP 455 E, PP455E, Saw Attachment |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 135 | 135E | 323P | 140E | 325P | 326P | 327P | 525P4S | 525P5S | 242 | 246 | Saw Attachment | 3120 | 3120XP | 340E | 345 | 345E | 346XP | 350 | 353 | 357XP | 359 | 362XP | 371XP | 385 | 385XP | 390XP | 394XP | 395XP | 42 | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 570 | 570II | 576XP | 371K | 135R | 226R | 241R | 241RJ | 250R | 250RX | 252RX | 265RX | 333R | 333RJ | 335FR | 335R | 335RJX | 335RX | 336FR | 336FRD, 336RK | 355FRM | 355FX | 355FXT | 355RX | 356BF | 356BT | 535FBX | 535LS | 535RJ | 535RX | 535RXT | 545FXAT | 545RXT | 545RXTAT | 555FRM | 555FX | 555FXT | 555RXT | 545FXTAT | 335 LS | 335 LX | 535 LK | 576XP AutoTune | PP 455 E | 375K | 327P4 | 327P5x | 545F |
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