parthiban

Hi All,
I ordered Audi recommended stock plugs, NGK PLFER7A8EG Part# 06K 905 601B from ECS Tuning. All 4 came pre-gapped as 0.028".
But, I see in several forms that the Stock gap should be 0.032" and for the tuned it's 0.028".

ECS mentioned that's how it came from the factory and it's possible that Audi/ NGK revised the gap specs now. I couldn't verify this elsewhere, please advise.

SMac770

The NGK part number tells you it'll be 0.8mm factory gap.

P - premium platinum
L - long reach extension, 26.55mm reach
F - M14, gasket (vs. tapered), 19mm reach (normally)
E - 3/4" hex
R - resistor plug
7 - heat range
A - "firing end construction special code"
8 - 0.8mm gap
E - special resistance (1kΩ)
G - Copper Core Ground Electrode

0.8mm = .0315"

parthiban

Thanks, @SMac770 for the detailed information. I'll just adjust the gap to be 0.8mm and install.

For those who might order Plugs from ECS in future: Their website does say that its factory gapped as per Audi spec. Just double-check the gap before installing.

bniner

Always check spark plug gaps!