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HELP! I'm confused.

2689 Views 6 Replies 4 Participants Last post by  cooldad2010

I bought 4-NGK LFR6AIX-11 (6619) because others recommended this plugs in other thread.

However, I just found in 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,

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Here's the Haynes reference for the 271 engine W203



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