Inline Fuel Filter For Hatz 1B20 1B30 1B40 1B50 Series Engines - 50478800 | L&S Engineers
Amazon.com: Hatz Diesel 0000 019 197 02 Fuel Filter Same As 01919702, 000001919702,"0000 019 197 02" Fits 1B Series model engines, Old Part Number is 01919701 and 01919700 : Everything Else