Description
Overview:
This genuine Husqvarna insulator (OEM No. 503 89 83-01 / MPN 503898301) is a heat‐resistant polymer spacer used on mid‐range Husqvarna petrol chainsaws, including the 345 and 340. It sits between the carburettor and the cylinder to isolate heat and vibration, helping to maintain an airtight intake path, stable idle, and consistent throttle response. The durable moulded construction resists fuel, oil, and engine temperatures commonly encountered in professional and domestic cutting. Correct insulation reduces the chance of air leaks that can cause hard starting, poor acceleration, or irregular running. Designed to match the original geometry and mounting points, it supports reliable refitting during routine servicing or a top‐end rebuild, ensuring your saw runs smoothly under regular site, garden, or forestry use.
Key Features:
- Genuine Husqvarna part for assured fit and specification
- OEM cross‐reference: 503 89 83-01; MPN: 503898301
- Heat‐resistant polymer helps limit heat soak into the carburettor
- Vibration isolation supports smoother running and user comfort
- Precise moulding maintains an airtight seal at the intake joint
- Fuel and oil resistant to suit modern pump fuels and two‐stroke mix
- Helps resolve air leaks, erratic idle, and poor throttle pickup
- Direct replacement that aligns with original fasteners and gaskets
- Suitable for routine maintenance or engine refurbishment
- Built for long service life in professional and DIY environments
Typical Applications:
Replacement during routine service, after impact damage, or when diagnosing air leaks on Husqvarna chainsaws. Common where saws are used for felling, logging, firewood processing, landscaping, and grounds maintenance. Useful when restoring stable idle, starting, and acceleration after age‐related hardening or warping of the original insulator.
Also known as:
Carburettor insulator, intake insulator, carb spacer, manifold insulator block, intake spacer, thermal barrier, carb mounting block, inlet insulator.
Fits Models:
135, 135E, 140E, 2141, 340, 340E, 345, 345E, 346XP, 350, 351, 353, 435, 435E, 435EII, 435II, 440, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, CS2152, CS2240, Husqvarna 340
Alternate Part Numbers:
503 89 83-01, 503898301
Product Specifications
| L&S Part No. | 503 89 83 01 |
|---|---|
| Part Type | Genuine Part |
| Manufacturer | Husqvarna |
| OEM No. | 503898301 |
| Unit of Sale | 1 |
| Applications | 135, 135E, 140E, 2141, 340, 340E, 345, 345E, 346XP, 350, 351, 353, 435, 435E, 435EII, 435II, 440, 440E, 440EII, 440II, 445, 445E, 445EII, 445II, 450, 450EII, CS2152, CS2240, Husqvarna 340 |
| Machine Type | Chainsaws |
| Fits Brands | Husqvarna |
| Fits Models | 340 | 135 | 135E | 140E | 340E | 345 | 345E | 346XP | 350 | 351 | 353 | 435 | 435E | 435EII | 435II | 440E | 440EII | 440II | 445 | 445E | 445EII | 445II | 450 | 450EII |
