Spark plug for Harley Davidson motorcycle 1340 softail 1997 model?

[Reki]

What is the equivalent Harley Davidson spark plug SR6A to Nippon Denso and NGK?

 

[vtwin_doc]

The HD # is actually 5R6A.

I reommend the NGK's moreso than Denso.

NGK Standard is BPR5ES-11
NGK Iridium (Best) is BPR5EIX-11

Denso standard is W16EXR-U11
Denso Iridium Power is IW16
Denso Iridium Tough is VW16


EDIT...Polar Bear...excellent site!!! I love the page on Synthetic Oils....

 

[Polar bear]

Here ya go,... this website has been invaluable.

http://www.harley-performance.com/harley-spark-plug.html