Type 4 style oil cooler. NEW. 1972-1979 Bus and 1980-83 Vanagon. Aluminum with 7 plates. Requires modification to doghouse tin if you are going to use it on a Type 1 motor. Improved cooling for Type 1 motors. OE# 021117021B. Reminder : if you are mounting to a type 1 cooler mouting flange you will also need longer bolts # T4OCBOLT. Don't forget to order oil cooler seals. 021117021B