NGK EV gold palladium spark plugs, have a fine wire (1.0mm) gold palladium center electrode for better ignitability, more power, and enhanced antifouling capabilities. Gold palladium increases durability. Traditional ground electrode.
Gold Palladium
Gold is an excellent conductor of electricity which makes it well suited for a performance plug. However gold is also a very soft metal, therefore the gold alloy is mixed with palladium, (a much harder metal), to form a premium fine wire performance plug with increased ignitability and durability.
The fine wire of the EG (nickel electrode) and EV (gold palladium electrode) Spark Plugs significantly lowers the voltage requirement for firing, optimizing the magneto ignition system.
NGK Fine Wire Spark Plugs feature:
Smaller Diameter Center Electrode Tip
Improves Ignition Efficiency
Better Concentration of Spark for Quick,
Easy Starts
Precious Metals Used in the Center Electrode Increase Ignitability and Durability
Higher Resistance to Fouling
Easier to Spark in High-Compression,
High-Revving Engines
Better Starting Performance
Even on the Coldest Days
B- Meaning it has a 14mm thread size and a 13/16" hex size
9- Position on heat range from 2-12 (2 hottest, 12 coldest)
E- 19mm (3/4") thread reach.
V- Fine wire gold palladium center electrode.
BR9EV - Same as above with resister for improved RFI suppression.
BPR9EV - Not sure what the P is for.
If Polaris calls for a BPR9EV where does it come from or where can you get it??..I cant find it anywhere..does not show up on NGK's web site either.