Products Description
HUS435/HUS440/HUS445 Buffer 3pcs – Partial Anti-Vibration Spring Set
Replacement AV Buffer for Husqvarna 435, 440, 445 & Compatible Models
This 3-piece buffer set is a partial replacement solution for the anti-vibration (AV) system on Husqvarna 435, 440, 445, and compatible chainsaw models. This set typically consists of 3 identical shock absorber springs or rubber buffers, which can be used to service the front or rear AV damping points individually. The springs are made from high-quality spring steel with oil-resistant rubber boots for effective vibration damping and high fatigue strength . Replaces OEM part numbers 503 89 83-01, 529 83 54-01, and 504 79 56-01.
Technical Profiles & Materials
3-Piece Partial Set – Includes 3 identical buffer units, which may be used to replace a portion of the AV system or supplement a full 7-piece set for complete restoration .
OEM-Spec Replacement Fitment – Replaces OEM part numbers 503 89 83-01, 529 83 54-01, and 504 79 56-01. Compatible with Husqvarna 435, 435E, 440, 440E, 445, 445E, and many other models .
Durable Construction – Manufactured from high-quality spring steel with oil-resistant rubber boots, offering excellent elasticity and high fatigue strength for long service life under demanding conditions .
Easy Installation – Direct replacement design allowing quick installation without special tools, restoring AV system function in minutes .
Cross-Brand Compatibility – Compatible with Husqvarna 135E, 140, 345, 350, 353, 357, 359, 455, 460, 461, 465, and many other models; also fits selected Jonsered and McCulloch saws .
Technical Specifications
| # | Parameter | Specification |
|---|---|---|
| 1 | Kit Contents | 3 buffer / spring units |
| 2 | OEM Part Nos. | 503 89 83-01, 529 83 54-01, 504 79 56-01 |
| 3 | Compatible Models | HUS435, HUS435E, HUS440, HUS440E, HUS445, HUS445E |
| 4 | Also Compatible | HUS345, HUS350, HUS353, HUS357, HUS359, HUS455, HUS460, HUS461, HUS465 |
| 5 | Cross-Brand | Jonsered 2141, 2145, 2149, 2150, 2152; McCulloch CS350, CS390, CS410 |
| 6 | Material | Spring steel + oil-resistant rubber |
| 7 | Function | Engine vibration isolation / AV system |
| 8 | Unit of Sale | 3 pieces per set |
Products Application
Partial AV System Restoration
Direct replacement for worn, cracked, or hardened AV buffers when only specific dampers have failed. The 3-piece set allows targeted replacement of front or rear anti-vibration elements without replacing the entire system .
Comprehensive AV Overhaul
For high-hour professional saws, the 3-piece set can be combined with other AV components (OEM 503 86 93-01, 529 83 54-01) for a complete vibration-damping restoration .
Chainsaw Maintenance & Repair
Used during routine maintenance or when excessive handle vibration is detected. Replacing worn AV buffers improves operator comfort and reduces fatigue during extended cutting tasks, especially on Husqvarna 435 and 440 series saws .
Quality and Craftsmanship Details
Products Package
About Us
As a premier garden machinery parts supplier, Jiaxing Norsun Trading Co., Ltd. bridges global distributors with over 100 vetted China manufacturers. We streamline your B2B supply chain through strict quality control, flexible production, and factory-direct wholesale pricing. Partner with us for reliable, high-volume sourcing of precision-engineered outdoor power equipment components.
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FAQ
Q: How do I confirm this buffer set fits my chainsaw?
A:Check your chainsaw model number on the housing. This 3-piece set fits Husqvarna 435, 435E, 440, 440E, 445, 445E, and many other compatible models listed above . It replaces OEM numbers 503 89 83-01, 529 83 54-01, and 504 79 56-01.
Q: Is a 3-piece set sufficient for a full AV system replacement?
A: A 3-piece set is typically sufficient for replacing one damping point or as a partial service component. For a complete AV system overhaul on Husqvarna 435/440/445 models, a 7-piece set may be required for full restoration . Check your specific model's AV system configuration.
Q: What are the symptoms of worn AV buffers?
A: Common symptoms include excessive vibration felt through the handle, rattling or loose feeling in the handle assembly, visible cracks or hardening of the rubber mounts, and increased operator fatigue during use . The LowVib™ system features AV buffers that deteriorate over time .
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