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Reviews (8)

Jul 10, 2019
A very nice product
A very nice product
I used them with Spectra C-591 coil on plug Ignition coils.
The color codes are as follows...
1. Red +12v power
2. Black Signal Ground
3. Yellow Signal (5volt)
4. Blue Shield Engine Ground
I am retrofitting 2 sets of these on a classic Oldsmobile engine.
I would think that these plugs would fit many different coils.
test wiring if you are using a different coil.
the release lever must be pulled gently away from the coil to release the plug.
the housing is numbered 1-4 matching up with the color codes above.
the seal appears to work quite well.
I would recommend this product as a replacement or retrofit.
I am very pleased with it.

Feb 26, 2025
Fits great. Works great ...
Fits great. Works great

May 23, 2019
Light weight 10.5in for early and late applications.
This is a quality product. What I would like to see is stamped in "E" and "L" for the positions of the counter weight. Also be aware that this is for a 10.5 in clutch disk and pressure plate.