seat configuration
also called how it seals in the head · plug seat
How the plug seals against the cylinder head — on a flat shoulder through a captive gasket washer, or on a bare cone. NGK publishes it as a named catalogue column, "Seat configuration", with exactly these two entries, and it is the one specification on this list that is not a matter of degree: a taper-seat head will not accept a gasket-seat plug at any reach, so getting it wrong is not a poorer choice but a wrong part. A token and not a literal [L11] — two recurring categories across every maker's whole range.
Seat configuration is answered with one word chosen from the seat configurations list — the same word shared across every product that uses it.
It belongs to measurement — its measurable, physical facts.
asked by the kinds that answer it
1 kind answers it, each for a single value. The same question can be reused by unrelated kinds — one meaning, many homes.
asked by kinds that answer it
The same question can be reused by unrelated kinds — one meaning, many homes.
| kind | how many |
|---|---|
| spark plug | required · one |