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With their heavy insulation, grounded barriers, and strong rip-prevention weaves often built into the casing, spark plug wires can be a royal pain. There aren’t many strippers that can easily handle the tough casings, but there are plenty of options for crimpers.

The unit above retails through Summit Racing Equipment and is manufactured by Taylor. The design doesn’t look terribly robust, but the $16 asking price isn’t bad. If that doesn’t seem like a decent value, there’s a pair of simple cast-aluminum blocks made by MSD which contain a jig for stripping plug wires with a razor. Put the two pieces between a vise’s jaws with a terminal in between, and they turn into a crimper. And that little doodad runs for only $7, which is close to cheap-ass tool territory.

The high-end option comes in the form of dies for interchangeable-jaw crimpers. The exact model will depend on the crimper you own, but they usually retail for around $30. This model [What’s This?], from SG Tool Aid, is a good example.

Taylor Plug Wire crimper [Summit Racing Equipment]
MSD Stripper/Crimper [Summit Racing Equipment]

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One Response to Plug Wire Crimpers

  1. KMR says:

    The last thing you want is a shitty spark plug wire terminal crimp.

    The first time you go to pull that wire off the plug, the terminal is going to stay on the plug and you’ll be SOL. The best plug wire terminals have interchangable jaws for each size plug wire (7mm, 7.5, 8, 9… etc). We have one sold by MSD, works very well… but was about 6x the price of that cheapo unit above.

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