Just replaced my plugs. Old plugs were NGK DCPR7E. New plugs NGK DCPR7E in my 07 Mastiff. The oem Champion plugs cost almost 40% more from my local auto parts dealer

. Normally it's the NGK's which are more expensive. The IX iridiums were 400% more expensive per spark plug :angry::nono:
For reference my AIH Texas Chopper manual specifies NGK DCPR7E, same spark plug.
Manufactures specify whichever company gives them the best deal at the time.
Resellers give the best prices to whichever supplier gives them the biggest kick back.
Way of the world
