NGK Spark Plug for Harley-Davidson FL Shovel Head | 78-81

These are the NGK Spark Plugs for your Harley-Davidson FL Shovel Head | 78-81

Plug Gap Setting

0.04

Standard NGK Spark Plug

BPR5ES-11

Premium NGK Spark Plug

BPR5EIX-11

How to Check & Set Propper Gap for Your FL Shovel Head | 78-81 NGK Spark Plug.

Question:
What is the correct spark plug gap for a Harley-Davidson FL Shovel Head | 78-81?

Answer:
0.04

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