NGK Spark Plug BKR6ES11 vs BKR6EKU

ERR446

Seaman Apprentice
Joined
Jan 4, 2002
Messages
48
Monarch Products sells these on the web for $1.99 and $5.11 respectively. :confused: Does anyone out there know what the differences are between these two NKG Spark plug part numbers?
 

Waterbugtoo

Petty Officer 1st Class
Joined
Nov 19, 2002
Messages
245
Re: NGK Spark Plug BKR6ES11 vs BKR6EKU

S11 is a wide gap single ground electrode, KU is a 2 ground electrode semi surface discharge.
 
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