Saw Chains · SKU B0DXK7PJB1
$22 Amazon rating ★ 4.0
18-in Chainsaw Chain for CRAFTSMAN S180 S1800 S185 42-cc 2-cycle 18-in Gas Chainsaw Model #CMXGSAMY42N8 CMXGSAMCX4218 CMXGSAMY421S
From our Amazon listing, checked September 25, 2026. Model and part-number matches are the seller's; confirm against the part on your machine.
Match three numbers: pitch, gauge, and drive-link count. All three must match the stamp on your current bar. If even one is off, the chain won't fit safely.
Pitch is the distance between any three consecutive rivets, divided by two. Gauge is the thickness of the drive links — measure with a caliper or check the bar stamp. Our guide covers both in detail.
With proper tension and occasional sharpening, an aftermarket chain lasts 3–5 cords of firewood or about 5 hours of active cutting — roughly the same as OEM.
Absolutely sharpen it. A quality replacement chain can be sharpened 3–5 times before the cutters are too short. Keep a round file matched to the cutter diameter.
This part is sold and shipped through Amazon. Check the live listing for current price, stock, delivery and return options.
Affiliate disclosure: we may earn a commission when you purchase through this link, at no extra cost to you.
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