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1978 Mercruiser Parts

Serial Number:
Select Model:
All 1978 140 CID 2.3L Mercruiser Models
Mercruiser 2140208 Parts - Authentic 2140208 140 CID 2.3L diagram resources

OEM parts for 153 CID 2.5L Mercruiser
Mercruiser 2120208 Parts - The number one source for Mercruiser 2120208 repair diagrams and parts
All 1978 165 Drives Mercruiser Models
Mercruiser 2165208 Parts - 2165208 parts in-stock

Locating MerCruiser Serial Number Tags

Engine Serial Number: The serial number tag is located near the starter, by the flywheel housing; or, on the rocker arm or flame arrestor cover.

Transom plates: The serial number tag is located on the inner transon plate inside the boat; or, on the upper swivel pin.

Sterndrive Serial Number (separate from engine): The serial number tag is located on the upper drive shaft housing (starboard side or on the back of the housing).