NGK (4929) DPR8EA-9 Standard Spark Plug, Pack of 1

Features:

Solid copper core for greater spark
Longer insulator nose prevents fouling
Corrugated ribs on insulator prevents flashover
Zinc dipped shell prevents corrosion
Triple gasket seal eliminates combustion gas leakage
Solid copper core for greater spark
Corrugated ribs on insulator prevents flashover
Zinc dipped shell prevents corrosion
Triple gasket seal eliminates combustion gas leakage

Use these to replace the OEMs on a 1985 Honda Nighthawk CB450SC. They work great (particularly in the Fall-Winter-Spring) but seem to run a little on the warm side in the Summer (NC). I might look at running DPR9EA-9 in the summer as a cooler plug. Still, getting very nice MPGs with these.

Abdul Hamid

OEM

A++

Rod Mackay

Good quality

Good spark

James Lee

Exact fit as described

Very fast shipping service.

Peter Patino

Great spark plugs, exact type my motorcycle required

Great spark plugs, the exact type my motorcycle required. Very good quality plugs, gap already set appropriately. They all come cylindrical cardboard tube over electrode to protect plugs while in the box. So you have no worries of your box being dropped and cracking your porcelain around the electrode. Very clean, crisp threads and installed in motorcycle heads with ease. INSERT tip: using a 3/8" rubber hose approximately 6-8" long, slide it over the top end of plug and use to insert plug into place. If you begin to cross thread during insertion the rubber hose will slip around plug. Whereas, with a ratchet one might be apt to keep tightening at this point, thus ruining the female threads in your cylinder head. Update- July 2015, its been a few years since I have replaced these plugs. Motorcycle still running strong. Great plugs. After initial replacement, my motorcycle had a felt increase and sense in horsepower...not dramatically increased of course but I could tell that these plugs were indeed causing my motorcycle to run with a little pep in her step. Chris Eastern NC

Aalia Bhat

Good plugs.

They last around 20k miles before the edges become noticeably rounded.

Jamillah Al-amin Fuller

these are the best, and if you're reading this you should know ...

these plugs are unable to tell me exactly why motorcycle is fouling them, for that reason, I have to say you should think twice about buying analog spark plugs. jokes aside, these are the best, and if you're reading this you should know better.