Is this good or bad?

[Chum]

Does this coil look OEM? Is it good or bad?
Thanks

[Agemax]

it sure isn't OEM.

[slayer61]

Andrews BLUE coil. Aftermarket. The only way to know for sure is to test it's resistance both primary and secondary.

Take this last part with a grain of salt. it was copied from another website.

Blue - have 45 degree angle mounts KZ 650 and 900/1000 with stock or electronic ignitions. Impedance 3.0 ohms.

Black - have 45 degree angle mounts KZ CDI only .6 ohms

Red - mounting holes inline with spark plug outlets fit Suzuki 4 cylinder with stock or electronic ignitions. Impedance 3.0 ohms.

Grey - mounting holes inline with spark plug outlet fits Suzuki 4 cylinder CDI only .6 ohms

Rust - mounting holes 90 degrees from spark plug outlets fit Yamaha XS11 and some of the newer Honda 4 cylinder engines with stock or electronic ignitions. Impedance 3.0 ohms.

White - mounting holes 90 degrees from spark plug outlets fit Yamaha XS11 and some of the newer Honda 4 cylinder engines with CDI only .6 ohms

Orange - vertical mounts fit Honda 4 cylinder engines with stock or electronic ignitions. Impedance 3.0 ohms.

Green - vertical mounts fit Suzuki or Honda 4 cylinder engines with with CDI only .6 ohms

Green, Black, Grey, and White coils on CDI ONLY. Their low impedance on a conventional system might result in excessive primary current.

Because the new coils have more voltage than stock coils, sparkplugs can be regapped to .035" (.9mm)

Good luck, Paul

[koolaid_kid]

Aftermarket - good. They put in more windings, hence higher output voltage.
3.0 Ohm good.
A couple of interesting design decisions:
The 12V (orange/white stripe) goes in one end, the igniter wire goes in the other end. One high voltage (spark plug wire) out each end. Most configurations have both high voltage out one end, the other two wires in the other end.

[Chum]

Thanks for the input Gents!

[Steve]

Yet another clue: it appears to be a production date of April, 1986 printed on the side.

Your sig says you have an '82 750.

.