Coil pack question


Asked by Dec 22, 2015 at 03:14 PM about the 2008 Ford F-150 King Ranch SuperCrew LB 4WD

Question type: Maintenance & Repair

I have to replace #3 cylinder coil pack and the
original coil packs have the brown boots(8l3e). #4
and #8 cops have the black boots (3l3e). I am
buying all 8 coil packs to replace them all and was
wondering (since the brown boots are so much
more expensive) if the black boots would work in

10 Answers


Color does not matter. If it were me I would only replace the bad one but in any case save the ones that are good in case you need one in the future. Having an extra coil around is always a good idea when you have a Ford Triton.

3 out of 3 people think this is helpful.

The next time I need to replace a coil I am going to get these --

3 out of 3 people think this is helpful.

OK so the brown coils (dg521) and black coils (dg511) are interchangeable then? I'm going to save them no doubt!

1 out of 1 people think this is helpful.

I don't know that part number but all you have to do is replace the bad one unless you want to spend more.

2 out of 2 people think this is helpful.

Boots n plugs boots n plugs..... I hear club music.

1 out of 1 people think this is helpful.

Most likely one color is the premium line while the other is the economy line. At NAPA we carry 2 lines. Our premium line is Echlin while our economy line is Mileage Plus. The main difference is in the warranty. That's why one line is more expensive. I'm a believer in replacing all the coils or coil packs when one fails. They were all new together, have all travelled the same distance, and have all fired the same amount of times. When one goes, the others are soon to follow. Definitely keep a few of the old, good ones, for spares to use in a pinch. HTH. -Jim


Thanks all...will let ya know how they work out for me

1 out of 1 people think this is helpful.

You're welcome. Glad to help. Yes, please do. -Jim

My truck has brown boots on coil packs, I bought new ones and they came with black boots. When I compared, the black ones are 1/2 in shorter than the brown ones. This concerns me if the spring will engage the spark plug enough or not. Thoughts?


dlehm2008, as long as the boots "snap" onto the spark plugs you should be ok. If your truck is an older model it could just be a design change by the manufacturer. HTH. -Jim

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