Chevrolet GM Marine 3.0L 181 4 Cylinder Oil Pan 

This is a BRAND NEW  cast steel used on all GM, Mercruiser, Volvo Penta, Crusader 3.0L marine engines marine applications years 1991-present. Used on all 1 piece rear main seal GM 3.0L, 4 cylinder marine engines.



Interchangeable with  following part numbers

810845
3857863