ACDELCO 18
ACDELCO part number 18 is a spark plug in the Ignition system. This catalog matches it to 563 year-and-engine configurations from 1971 to 2025.
Verified fitment includes 2025 Chevrolet Colorado 2.7L L4 Turbocharged ; 2025 Chevrolet Equinox 1.5L L4 Turbocharged ; 2025 Chevrolet Malibu 1.5L L4 Turbocharged ; 2025 GMC Canyon 2.7L L4 Turbocharged ; 2025 GMC Canyon 5.3L V8 , plus 558 other configurations. See every vehicle this part fits.
Frequently Asked Questions
What is ACDELCO 18?
ACDELCO part number 18 is a spark plug with published application data for 563 vehicle configurations from 1971 to 2025. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.
Which vehicles does ACDELCO 18 fit?
This catalog matches 18 to 563 year-and-engine configurations from 1971 to 2025. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.
Is ACDELCO 18 OEM or aftermarket?
What matters is the published application data for this part number, not the label on the box. ACDELCO 18 is listed with its manufacturer part number so you can compare it to an OEM number or another brand that covers the same fitment.
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