1966 AC 427 Spark Plugs

Your 1966 AC 427 might be the best vehicle you’ve ever owned. Or you may just be struggling to keep it highway-approved. No matter the situation, Advance Auto Parts has the Spark Plugs you desperately need.

We currently carry 2 Spark Plugs to choose from for your 1966 AC 427, and our inventory prices range from as little as $2.99 up to $4.49.

On top of low prices, Advance Auto Parts offers 2 different trusted brands of Spark Plugs for the 1966 AC 427. We only sell parts from trusted brands like Autolite so that you can find quality parts you can count on.

Don’t take our word for it – check out customer ratings and reviews to buy with confidence. We have 1 reviews on our Spark Plugs for the 1966 AC 427 from previous customers.

Have parts delivered straight to your home, or find the nearest Advance Auto Parts store to check out our Spark Plugs stock in-person!

Spark Plugs for Your 1966 AC 427

Autolite – Racing Non-Resistor Spark Plug: Enables Performance, Handles Intense Conditions (Part No.AR33)

Racing Non-Resistor Spark Plug: Enables Performance, Handles Intense Conditions

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$4.49
The ground electrode is cut-back from the center electrode to provide a gap. The face of the ground electrode is concave to provide a constant gap to the center electrode. This plug is designed use in all aftermarket cylinder heads used in different types of racing venues including oval and road racing.

Product Features:
  • Opens spark face for better ignitability of flame kernel
  • Retains less heat, transfers heat to shell faster – reduces risk of pre-ignition
  • Dyno testing has shown proven power gains
  • Cut-back ground electrode evolved from practice of grinding back the side electrode
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Champion – Copper Plus Spark Plug: Dependable Performance, OE Replacement, RF9YC (Part No.409)

Copper Plus Spark Plug: Dependable Performance, OE Replacement, RF9YC

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$2.99
Dependable performance. This Champion spark plug features a copper core electrode that provides increased conductivity and heat control for good overall wear.

Product Features:
  • Copper Plus – Dependable Performance.
  • Copper core center electrode allows for accurate control of heat range for longer life
  • Patented TinTac and ULTRASEAL coated shell for maximum corrosion resistance
  • Patented SAC-9 semiconductor resistor for maximum EMI & RFI suppression
  • Built to ISO and SAE standards for proven performance
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