- MerCruiser Engine GM 4 Cylinder Exhaust Manifold Mounting Kit 
- Includes 18-2819-1 Exhaust Elbow Gasket
- For use with:- MerCruiser GM 4 cyl. 153 cu. in. (early models 110/120)
- GM Inline cyl. 250 cu. in. (model 160)
 
- Manufacturer: Sierra
- Model Number: Mounting Kit
- Part Number: 18-8508
- Also Known As:- OSCO 5538-MK
 
 
            