TOPIC: Chrysler 105 HP Spark Plug

Sorry to ask a mundane question. I have a manual that lists spark plug recommendations but it skips the 105. Its a 1966 engine. What plug should I use?

What plug is in it now?

Good question. I'll give it a look. Its pretty rusty.

Good question. I'll give it a look. Its pretty rusty.

The plugs are different for different years. Look up your motor by model # here, and check out the plug choices:

www.marineengine.com/parts/chrysler-outboard-parts/

You'll find the spark plugs listed on the "Powerhead" diagram.

HTH..........ed

Which ignition is on it? Points coil? The CD aka Magnapower engines use a surface gap type BUH (NGK)L20V L18V (Champion). And so did the late Prestolite ignition. But I think 66 is too early for that. My manuals only go back to 69 so I cant say what what the early points-coil motors use for sure.