Hey Scotty. I have a 2005 Ford F-150 Pickup with a 4.6L 2V V8, ~120K miles (Yes, I torque the plugs…


Hey Scotty. I have a 2005 Ford F-150 Pickup with a 4.6L 2V V8, ~120K miles (Yes, I torque the plugs right so they don't blow out). Some of my friends have harassed me for getting OEM Ford DG508 COP ignition coils when one of mine failed (due to a misfire and hard code - attached

). After replacing, no issues. What's your opinion on third party COP ignition coils? I know from past experience with plugs, the engineers MIGHT actually know what they are doing, so tend to stick to OE ignition parts. Thoughts?

Also, my fiance LOVES her PIAA Silicone wipers I put in 2 weeks after putting on new rubber wipers. She says they are day and night above the 14 day-old rubber wipers. Keep up the great insight!

Addendum... I decided to replace the other 7. I have always had a slight "stumble" at idle in park/neutral since I bought the thing at 85K (but for a good price). As such, and since tax time is here, I spent some money on the OEM COP Coils, and will be replacing all 8, keeping the recent replacement as a spare...

Comments (7)
No. 1-2
Scotty Kilmer
Scotty Kilmer


third party coils can be fine, just stay away from chinese made ones.


I'm fixing to Scottyize my RAV4 wipers w/ Silicone, they've started to skip. Not best person to guide you on OEM: since 1986 I've been Toyota owner (still own my 1991 bought-new Toyota-- proving SK's theory that "You can get 30-yrs. out of a Toyota!")-- & inveterate Genuine OEM Toyota (i.e., Toyota, DENSO, AISIN) Parts Snob. I only buy aftermarket when OEM "no longer available." I have never regretted buying OEM. In 9-yrs. I've owned my 1998 RAV4, she costs me c. $1.67 per day to own, based on what I paid; plus MINIMAL parts/labor in nearly a decade of ownership. Scotty saves me so much $$$ via DIY repairs I feel I "can afford" genuine OEM. I encourage you to adopt that attitude also, leaving your pals to merrily replace crummy aftermarket parts more often, too soon, or deal w/ other problems that spring up from installing poorly designed or badly executed inferior parts.