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#1
09-22-2000, 07:02 PM
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hi
I need help. My owners manual lists 6 different plug(spark) #'s. What is the purpose/benefit of each? The manual lists the following: Bosch H9DC,H9DCO,H9D Beru: 14K-9DU,14K-9DUO,14K-9DPU * 2 3's are listed for champion also can anyone tell me the meaning of thes #'s I have a 103 engine THANKS 
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#2
09-22-2000, 08:01 PM
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We use the H9DC's. The work great. I think the difference is in the center electrode design. I have seen no advantages in ANY special spark plug design for daily use.
------------------ Benzmac: Donnie Drummonds 300E ASE CERTIFIED MASTER AUTO TECHNICIAN SERVICE MANAGER FOR 14 BAY FACILITY MERCEDES SPECIALIST 8 YRS PARTNER IN MERCEDESSHOP.COM
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