Home / Lawn & Garden / Parts / Chainsaw Chain, 16-in 3631 Chainsaw Chain, 16-in 3631$29.26 Price may not be up-to-date. In Stock View Product Part Number: 3631 Brand: MIDWEST ENGINE WAREHOUSE Seller: Sears PartsDirect Categories: Lawn & Garden, Parts 60-day return policy Description This chain (part number 3631) is for chainsaws. Chain 3631 rotates around the edge of the cutting bar to cut through branches. Wear work gloves to protect your hands when installing this part.