1980–1981 Cadillac Eldorado 6.0L Spark Plugs

Catalog-listed plug, cross-brand equivalents, gap, and where to buy for the 1980–1981 Cadillac Eldorado 6.0L.

ACDelco · Catalog-Listed
AC4
MetalCopper
Gap—

Listed in a manufacturer plug catalog — confirm against your owner's manual before buying.

The ACDelco AC4 is a 14mm thread, gasket seat, copper electrode spark plug. These specifications are decoded from the ACDelco part number and determine which plugs it safely cross-references to — a valid equivalent must match the thread, reach, seat and heat range.

Spark plugs that fit the 1980–1981 Cadillac Eldorado 6.0L

PlugMetalGapBuy
ACDelco AC4 Copper— Buy

Frequently asked questions

What spark plug does a 1980–1981 Cadillac Eldorado 6.0L use?
A manufacturer catalog lists the ACDelco AC4 (Copper), gapped at the factory spec. Listed in a manufacturer plug catalog — confirm against your owner's manual before buying.

How many spark plugs does a 1980–1981 Cadillac Eldorado 6.0L need?
Check your owner's manual for the exact count for this engine.

What is the spark plug gap for a 1980–1981 Cadillac Eldorado 6.0L?
See the underhood emissions label — always confirm against the label or manual before installing.

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