Mercury/Mariner Powerhead Identification

Repair Time: Less than 30 mins

Repair Difficulty: Easy

added May 8, 2019 at 10:00 PM updated May 16, 2019 at 8:34 PM

Mercury/Mariner Powerhead Identification

Mercury Marine Outboard

In order to provide you with the correct powerhead, the following information is required:

1. Model Number and Serial Number
These numbers are located on the transom bracket of the motor.

2. Engine Cast Number

3 CYL of L# Powerheads: Please provide the cast number for 70, 75, 80, and 90 HP powerheads built between 1987 and 2002. This number is located on the starboard side of the block next to the number 3 CYL. Example: 877 - 8946 - C7

6 CYL, V6 or 3.0 litre Powerheads: Please provide cubic inch (122, 142, or 153) or litre (2.4, 2.5, 3.0). Also provide the cast number. This number located on the starboard side of the block where the two halves of the block come together. Example: 885 - 9811 - C4

Mercury/Mariner Serial Numbers...To Year Models

YEAR	SERIAL #	YEAR	SERIAL #	YEAR	SERIAL #
1980	55	1990	C2062	2000	G9605
1981	57	1991	C2395	2001	T1785
1982	5944	1992	D0820	2002	T4090
1983	6203	1993	D1373	2003	T5990
1984	6435	1994	D2793	2004	T800750
1985	6616	1995	G09901	2005	T980000
1986	A9046	1996	G2905	2006	1B227000
1987	A9-B1041	1997	G3864
1988	B2392	1998	G5900
1989	C1000	1999	G760

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