O-CONN 18-Inch Chainsaw Chains 4-Pack .325" Pitch .050" Gauge 72L — Semi-Chisel, Chrome Finish

O-CONN 4-pack 18-inch chainsaw chains are .325" pitch, .050" gauge, 72-drive-link replacement chains built for reliable cutting performance on compatible saws.

These replacement chains are designed to work with a wide range of popular 18" bar chainsaws from brands such as Husqvarna, Echo, Craftsman, Makita, Ryobi and Poulan. Each chain uses semi-chisel cutters, hardened rivets, and a chrome-finished outer layer intended to extend service life while maintaining smooth, low-vibration operation. The four-pack format gives you spares for repeated use or for sharing across multiple saws, and the specification list simplifies compatibility checks.

Which saw models will these chains fit?

The O-CONN chains are intended for 18" bars that require a .325" pitch, .050" gauge and 72 drive links. They match many factory and aftermarket chains used on homeowner and light-pro saws.

• Compatible models include Husqvarna 133/136/137/140/1400 series and Echo CS-3600/CS-3900/CS-4000.
• Also fits Craftsman 316.35022, 316.35085, 316.38019 and Makita DCS430/DCS431/DCS46018.
• Common Ryobi models include PCN3840, PCN4545, RY10518; many other saws using the same specs will fit.

How durable and safe are these chains in everyday use?

These chains use a semi-chisel tooth profile for a balance of cutting speed and ease of sharpening, while the hardened rivets and chrome outer layer resist wear. The construction focuses on longevity and lower vibration, which makes handling more comfortable over longer periods.

• Semi-chisel cutters for consistent cuts and straightforward resharpening.
• Heat-treated rivets increase tensile strength and connection reliability.
• Industrial hard chrome finish reduces surface wear and corrosion.
• Designed for lower kickback and reduced vibration to help user control.

What maintenance is required to keep the chain performing well?

Routine care keeps the chain cutting efficiently and extends its life. Regular sharpening, correct tensioning, lubrication, and inspecting for damaged links are basic steps that preserve performance and safety.

• Sharpen cutters with a .325" appropriate round file when cutting becomes sluggish.
• Check and set tension before each use—proper tension prevents derailment and wear.
• Use bar and chain oil while operating to minimize friction and heat build-up.
• Replace the chain if rivets loosen, links crack, or teeth are severely worn.

Why buy a 4-pack instead of a single replacement chain?

A multi-pack reduces downtime by keeping spares on hand, saves per-chain cost, and provides a backup when you have several saws or a job that consumes chains quickly. It’s practical for property owners, landscapers, or anyone who needs dependable replacements without frequent reordering.

• Immediate backups cut interruptions on longer jobs.
• Cost-effective compared with buying single chains repeatedly.
• Good for workshops, rental fleets, and seasonal users who store spares.

Who is this for? The O-CONN 18" .325" pitch, .050" gauge 72-drive-link 4-pack targets homeowners, property managers, small contractors and hobbyists who use 18" chainsaws from major brands and want a durable, serviceable chain that balances cutting efficiency with lower vibration. If you run compatible saw models, want spares on hand, and prefer a semi-chisel profile that’s easy to sharpen, this set provides value and straightforward fitment—just confirm your saw’s pitch, gauge, and drive link count before ordering.