I was looking for a set of NGK IZFR7M spark plugs for my 300XS. Mercury parts express list them for around $23.00 ea. I found they cross referenced to an Autolite XPS 5224 sold at Auto Zone for $6.95 ea. Question I have is this plug an equal to the NGK and will work on this motor.
After my motor quit on me and left me stranded last week, I'm trying to come up with a spare parts list that I could store in my boat of parts that I could replace on the water that in essence could get me back to the ramp if this were to happen again. I haven't seen any one put out a list so that's why I'm asking. So far I have the following:
Spark Plugs, Coil, Coil wiring harness, Spare Fuses, Alternator belt, Water Pump impeller and gaskets, Prop hub and spare nut, Fuel filter and bulb, Spare wire ties, clamps, tape, connectors, etc. Anything else that could that could help turn a bad day into a better day.