ACDELCO C45L

ACDELCO part number C45L is a spark plug in the Ignition system. This catalog matches it to 91 year-and-engine configurations from 1935 to 1966.

Verified fitment includes 1966 American Motors Marlin 4.7L 287cid V8 ; 1966 American Motors Rebel 5.3L 327cid V8 ; 1965 American Motors Ambassador 5.3L 327cid V8 ; 1965 American Motors Classic 4.7L 287cid V8 ; 1965 American Motors Marlin 5.3L 327cid V8 , plus 86 other configurations. See every vehicle this part fits.

Manufacturer specifications
ProfessionalConventionalPre-Set Gap: 0.030"
Original Equipment-Recommended Gap: .035
Application data published for:
🇺🇸 US 🇨🇦 CA

Frequently Asked Questions

What is ACDELCO C45L?

ACDELCO part number C45L is a spark plug with published application data for 91 vehicle configurations from 1935 to 1966. Use the manufacturer part number to cross-reference your old part or a repair quote before you order.

Which vehicles does ACDELCO C45L fit?

This catalog matches C45L to 91 year-and-engine configurations from 1935 to 1966. Open the compatible-vehicles list for every make, model and engine, and read the notes for position or trim qualifiers.

Is ACDELCO C45L OEM or aftermarket?

What matters is the published application data for this part number, not the label on the box. ACDELCO C45L 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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