The Husqvarna 522858401 Muffler Kit Tier 2 Fs6600/8400 is a genuine OEM exhaust assembly designed for the FS8400D floor saw. Built to Husqvarna's Tier 2 emissions specifications, this kit delivers an exact match to the original exhaust system — ensuring correct fitment, proper exhaust flow, and emissions compliance right out of the box. DHS Equipment supplies this part to help keep your floor saw running at full capacity on the job.
Key Features
- Genuine OEM Emissions Compliance — Manufactured to Tier 2 exhaust standards, matching the original engine output and emissions certification requirements for the FS8400D.
- Complete Kit Format — Supplied as a full muffler kit with all necessary components for a straightforward exhaust replacement on compatible floor saws.
- Direct Replacement for FS8400D Floor Saws — Engineered specifically for the FS8400D, this kit installs in place of the original muffler assembly with no adaptation needed.
- Restored Exhaust Performance — A worn or cracked muffler reduces backpressure control and increases exhaust noise; this kit restores correct engine breathing and sound attenuation to OEM levels.
- Operator Safety — A properly sealed exhaust system prevents hot gas leaks near the operator and combustible materials — a critical consideration on any concrete cutting site.
The muffler on a floor saw is responsible for channeling exhaust gases away from the engine, controlling backpressure to maintain optimal power output, and reducing exhaust noise to acceptable operating levels. On a high-output machine like the FS8400D, a failed or degraded muffler can cause a noticeable drop in engine performance, excessive noise, and potentially dangerous exhaust gas exposure near the operator. Replacing the assembly with the correct Tier 2-rated kit ensures the engine continues to meet emissions standards and runs as intended. Cross-reference part number 522858401 against your parts diagram to confirm fitment before ordering.
Part Details
| Part Number | 522858401 |
|---|---|
| Brand | Husqvarna |
| Part Type | Genuine OEM |
| Description | Muffler Kit Tier 2 Fs6600/8400 |
Compatibility & Fitment
| Name | Model |
|---|---|
| Floor Saw | FS8400D |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
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