1974 Proton Regal Spark Plugs
Catalog-listed plug, cross-brand equivalents, gap, and where to buy for the 1974 Proton Regal.
Listed in a manufacturer plug catalog — confirm against your owner's manual before buying.
The NGK BPR6E is a 14mm thread, 19mm reach, gasket seat, heat range 6, copper electrode spark plug. These specifications are decoded from the NGK 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 1974 Proton Regal
| Plug | Metal | Gap | Buy |
|---|---|---|---|
| NGK BPR6E | Copper | — | Buy |
| NGK BPR6ES | Copper | 0.031 | Buy |
Frequently asked questions
What spark plug does a 1974 Proton Regal use?
A manufacturer catalog lists the NGK BPR6E (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 1974 Proton Regal need?
Check your owner's manual for the exact count for this engine.
What is the spark plug gap for a 1974 Proton Regal?
See the underhood emissions label — always confirm against the label or manual before installing.
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