Oil Drain Hose Replacement 3/8" NPT for B & S Tecumseh Kohler STAN1438 1723165SM 116-4924 Material Type: Rubber Color: Red Replacement Part: STAN1438 116-4924. The hose measures 12.5 inches in length and has a 3/8-inch inner diameter. It is compatible with numerous Tecumseh engines, as well as 16 and 18 HP Kohler engines. This part is intended for use with a 3/8-inch NPT (National Pipe Thread) oil drain port. The "3/8" in "3/8 NPT" does not indicate the outer or inner diameter. It fits a broad variety of small engines, including B & S, Tecumseh, and Kohler models. Rated for high-temperature operation up to 320°F and 700 PSI. Constructed from high-strength steel and rubber ???? Please confirm the model details with us before placing your order.