MerCruiser OMC Volvo Penta GM 3.0L 140hp 4cyl Engine Main Bearing Caps 1pc Seal Trim Tab Parts Spark Plug Wires

Spark Plug Wires

you may need to swap these

Some of these sometimes had an additional large "rubber pin" and others did not

MerCruiser Pre-Alpha One "R" Drives 120-190 HP MerCruiser®--1983-1985

Quite sure this would also be a suitable replacement for earlier 1986-1996 engines as well

MerCruiser OMC Volvo Penta GM 3.0L 140hp 4cyl Engine Main Bearing Caps 1pc Seal Trim Tab Parts Spark Plug WiresPart Number(s) Included Not really a part number for these but basically these are the Main Bearing Caps for the crankshaft on the 1990 & up GM 3. 0L 4cyl 140hp 1 piece rear main seal engines. General Application Compatibility GM 3. 0L I L4 applications 1990 & up with a one piece rear main seal. MerCruiser Gen I & Gen II applications 1990 & Up using this block OMC Cobra Volvo Penta If you are unsure on what type of rear main seal you have please