stick with OEM (Denso)

 

My failed OEM coil has "Diamond electric" markings. Are they the same as Denso?

 

Ive heard "Diamond" is a new OEM for Toyota among others

Diamond Electric, MFG | Ignition Coil Manufacturer

 

no idea. are you the original owner? If not, those may not be OEM

 

Diamond Electric is a parts supplier to Toyota any many others.

Diamond Electric, MFG | Ignition Coil Manufacturer

Diamond Electric is an ignition coil manufacturer for automotive companies like Ford, Dodge, & Subaru. Our company slogan is “Health, Trust, and Progress.”

diamond-us.com

 

About 18 months ago, when coil on #3 died, I replaced all 3 rear-bank coils on my ES with Hitachi units, as brand has excellent reputation, and, at the time, they were significantly cheaper than Denso. No problems as a result. Apparently Wizards Guild has not cursed all non-oem suppliers of Toyota parts.
BTW, Diamond Electric was the OEM supplier for coils on Toyota/Lexus/Scion, probably still is.

 

Thanks all, I'm going to try the Hitachi coils since they are much cheaper than OEM from the dealers.
I have used them with good results in my 90's Nissan and just wanted a second thought.

 

Given the difficulty of replacing coils on the rear bank the last thing I would EVER install is non OEM. It's an expense you're likely to incur only once in the lifetime of the vehicle

 

I agree, but I do cheap labor so not much added expense just a bit of time.

 

Diamond may very well be the OEM supplier for US built Toyotas. See my post above.

 

Look on RockAuto as they have a good selection with info and favourites. Pricing is good and acceptable shipping to Canada for higher ticket items.

 

Recently purchased Toyota OEM from a dealer and it looks identical to what came with the SUV. The Denso coils online do not look like the factory coils. The Factory coils appear to have a metal shield (noise shield?) around the tubular shank which the pictures of the Denso did not have at Rock Auto.

McGeorge Toyota mail order charged $71 each for V6 coils. Plugs were $10.50.
Replaced only coils on rear bank and kept old ones as spares for the front.

Car ran fine but one of the nibs on the electrode was visibly worn so the gap was about .06". The remaining 5 were about .044". Factory plugs had 140K on them.

 

The metal shields remind me of the crap on my kids VW.
Toyota from the 2000's are always plastic.

I collect good but "replaced at owner's request" coils out of Toyotas.
Got a whole bucket full. Never have to buy again.