The Efco 0044409 is a genuine OEM oil tank cap designed for a wide range of Efco chainsaw models. This essential component ensures a tight, leak-free seal for the oil reservoir, protecting the engine and maintaining optimal lubrication system performance. Manufactured to Efco's precise specifications, it guarantees reliable fitment and durability for models including Efco 137, 140, 141, 147, 152, 156, 162, 937, 940, 941, 947, 952, 956, 962, MT3700, MT4000, MT4100, MT4400, MT5200, MT6500, MT7200, MT8200, MT8200S, MT8200SP, MT8200XP, and MT8200XPS.