Description
Husqvarna X-Cut SP33G-66 16" Chainsaw Chain – .325" PIXEL Pitch, .050" Gauge, 66 Drive Links – 581643666
Get fast, efficient cutting performance with the Husqvarna X-Cut SP33G-66 16" Chainsaw Chain – 581643666. X-CUT SP33G was developed, designed, and manufactured by Husqvarna to provide demanding homeowners and professional users with excellent cutting performance, lasting sharpness, outstanding durability, and reduced maintenance. Its semi-chisel cutters, low-stretch design, and reduced-kickback characteristics provide smooth, efficient cutting while helping improve control and productivity.
Chain fitment depends on your guide bar and cutting system specifications—not just chainsaw model or bar length.
Always verify your current chain specifications:
- 16" Bar Length
- .325" PIXEL Pitch
- .050" Gauge
- 66 Drive Links
- Husqvarna Chain Type SP33G-66
Model fitment alone does not guarantee compatibility. Husqvarna chainsaws can be equipped with different guide bar and chain combinations. Always verify the pitch, gauge, drive-link count, guide bar length, and cutting system before ordering.
Important: This chain uses the Husqvarna .325" PIXEL, .050" gauge cutting system. The chain must match the pitch and gauge of the guide bar and drive sprocket installed on your chainsaw.
If you're unsure, contact us with your Husqvarna model number, serial number, guide bar information, and current chain number, and we'll help verify the correct replacement before you order.
Product Features
- Genuine Husqvarna X-Cut® replacement chainsaw chain
- Husqvarna OEM Part Number 581643666
- Husqvarna chain type SP33G-66
- .325" PIXEL cutting system with .050" gauge
- Semi-chisel cutters provide smooth, dependable cutting performance
- Fast and lightweight chain designed for high cutting efficiency
- Reduced-kickback characteristics help improve control during operation
- Designed for demanding homeowners and everyday professional use
- Long-lasting sharpness helps maintain cutting performance between sharpening
- Outstanding durability for demanding cutting applications
- Low-stretch design helps reduce the need for frequent chain tension adjustments
- High cutting efficiency helps improve productivity and reduce cutting effort
- Designed for easy maintenance and dependable everyday performance
- Developed, designed, and manufactured by Husqvarna
- Sold as one complete 16" chain loop
Specifications
- Brand: Husqvarna
- OEM Part Number: 581643666
- Product Series: X-Cut® SP33G
- Husqvarna Chain Type: SP33G-66
- Cutting System: .325" PIXEL
- Package Quantity: 1 Chain
- Bar Length: 16"
- Pitch: .325" PIXEL
- Gauge: .050"
- Drive Links: 66
- Cutter Style: Semi-Chisel
- Application: Demanding Consumer & Professional Chainsaw Use
What This Chain Does
The Husqvarna SP33G X-Cut® chain is engineered to provide a combination of fast cutting, smooth operation, durability, and easy maintenance. Its semi-chisel cutter design delivers dependable cutting performance while the .325" PIXEL cutting system helps provide efficient cutting and excellent handling.
SP33G is designed with lasting sharpness, low stretch, and high cutting efficiency to help users maintain productivity throughout demanding cutting jobs. Reduced chain stretch means fewer tension adjustments, while the durable construction helps provide dependable performance for both demanding property owners and professional users who operate their chainsaws regularly.
Fits These Husqvarna Chainsaw Models
Verify your guide bar and existing chain specifications before ordering.
435, 435e, 440, 440e, 445, 445e, 450, 450e, 450 Rancher, 545, 550XP, 550XP Mark II
Required Chain Specifications: 16" Bar, .325" PIXEL Pitch, .050" Gauge, 66 Drive Links
Important: These chainsaw models may have been offered with different bar lengths or cutting-system configurations. Confirm that your specific saw is currently equipped for a 16" bar using .325" pitch, .050" gauge chain with 66 drive links.
Common Applications
- Professional tree care
- Property and acreage maintenance
- Tree felling
- Bucking logs
- Limbing
- Storm cleanup
- Firewood cutting
- Farm and woodland maintenance
- Everyday professional cutting
- Demanding homeowner chainsaw applications
Frequently Purchased Together
- 16" Husqvarna guide bar designed for .325" pitch, .050" gauge chain (verify bar mount and 66-drive-link requirement)
- Husqvarna chainsaw file and filing guide
- Depth gauge tool
- Husqvarna bar and chain oil
- Replacement drive or rim sprocket compatible with the .325" cutting system
- Guide bar groove cleaner
- Chainsaw sharpening kit
- Replacement air filter
- Replacement spark plug
Installation Tips
- Shut the chainsaw off and disconnect the spark plug before performing chain or guide bar service.
- Verify that your guide bar requires a 16" chain with .325" PIXEL pitch, .050" gauge, and exactly 66 drive links.
- Do not select a replacement chain based on bar length alone. Pitch, gauge, and drive-link count must also match.
- Clean the guide bar groove and oil passages before installing the new chain.
- Inspect the guide bar and drive sprocket for excessive or uneven wear before installing a new chain.
- Install the chain with the cutter edges facing forward across the top of the guide bar.
- Make sure all 66 drive links are properly seated in the guide bar groove and drive sprocket.
- Adjust chain tension according to the Husqvarna operator's manual. The chain should move freely around the bar while remaining properly seated in the bar groove.
- Recheck chain tension after the first several cuts and periodically during operation.
- Although X-Cut SP33G is designed for low stretch, chain tension should still be inspected regularly.
- Confirm that the chainsaw's oiling system is functioning properly before cutting. Proper lubrication is critical to chain and guide bar life.
- Maintain the proper cutter angles and depth gauge settings when sharpening to preserve cutting efficiency and performance.
Why Choose Husqvarna SP33G X-Cut Chains?
Husqvarna X-Cut® SP33G was developed, designed, and manufactured by Husqvarna to deliver the cutting characteristics demanded by serious chainsaw users. Its combination of lasting sharpness, outstanding durability, low stretch, reduced-kickback characteristics, semi-chisel cutters, and high cutting efficiency provides dependable performance with easier maintenance. The SP33G-66 is an excellent choice for compatible Husqvarna chainsaws equipped with a 16" .325" PIXEL, .050" gauge, 66-drive-link cutting system.