Fits Mercury Motors Listed Below: 1998-2006 6 Cyl 2.5L Mercury EFI 200 1998-2006 6 Cyl 2.5L Mercury Optimax 135 1998-2006 6 Cyl 2.5L 

Mercury Optimax 150 2001-2006 6 Cyl 2.5L Mercury Optimax 175 1998-2006 6 Cyl 3.0L Mercury EFI 225 2002-2006 6 Cyl 3.0L Mercury Sport Jet 250

Replaces Mercury part # 
 
339-856991A1, 339-850227, 18-5187
 
This ignition coil meets or exceeds OEM specifications
Direct replacement
Fits Mercury Motors Listed Below:

1998-2006 6 Cyl 2.5L Mercury EFI 200
1998-2006 6 Cyl 2.5L Mercury Optimax 135
1998-2006 6 Cyl 2.5L Mercury Optimax 150
2001-2006 6 Cyl 2.5L Mercury Optimax 175
1998-2006 6 Cyl 3.0L Mercury EFI 225
2002-2006 6 Cyl 3.0L Mercury Sport Jet 250