Hi,
I bought 4-NGK LFR6AIX-11 (6619) because others recommended this plugs in other thread.
However, I just found in Amazon.com that ONLY NGK ILFR6A Laser Iridium (3588) fits to my 05 C230K SS and NGK LFR6AIX-11 (6619) doesn't!!!! Can you please help me if I should return them and re-order ones?
Best regards,
Cooldad.