07K905715G from fcpeuro or audiusaparts ?

[SDF1]

https://www.fcpeuro.com/products/aud...oil-0221604115
or
https://www.audiusaparts.com/oem-par...oil-07k905715g

I've never ordered from either and I'm wondering if you guys had experiance.

The FCP one looks like a Bosch equivalent not the real version G?

Any ideas?

[ps2cho]

Get the red top R8 coils as they are more reliable as I understand it

[Smac770]

Audi itself (parts.audiusa.com) will only sell Audi OE parts. But Bosch is the one that makes those coils that Audi sells as their own.
So FCPEuro is selling the same part from Bosch that Bosch (sort of) is selling to Audi. You'll find if you dig into the Bosch catalog that they actually have a different specific part number for the OE part they supply to manufacturers and the equivalent IA (independent aftermarket) part they supply to resellers like FCPEuro and ECSTuning.

If I start at parts.audiusa.com and pick my vehicle and search for ignition coil, I come to:
https://parts.audiusa.com/p/Audi_200...7K905715G.html
Notice it mentions both Bosch and Eldor.

If we look at ETKA for an '09 2.0T CAEB:
https://audi.7zap.com/en/usa/audi+a4.../9/905-905000/
We see Bosch and Eldor listed, with Bosch on the 06H... and Eldor on the 07K...

If we search Bosch Auto Parts for (use a '10 as their site, like FCPEuro, does a poor job of separating the CAEB from the BWT, both of which existing in '09 US A4) coils, we get:
https://www.boschautoparts.com/en/au...tId=0221604115

If we go to the Bosch catalog and look on that part number:
https://www.bosch-automotive-catalog...uct/0221604115
we see the OE part is 0221604116:
https://www.bosch-automotive-catalog...uct/0221604116

For 116, the OE part Bosch sells Audi, we see it equivalent to Audi 06H 905 115 B.
For 115, the IA part Bosch sells everyone else, we they list it as equivalent to Audi 06H 905 115 A, 06H 905 115 B, 07K 905 715 C, 07K 905 715 F, 07K 905 715 G.

If you look at the FCPEuro pics, it's Bosch 0221604115, so thus equivalent to 07K 905 715 G.

Audi is terrible at using the same part number for multiple vendors for ignition coils and spark plugs. For spark plugs, same issue, but Bosch and NGK.

I know nothing about Eldor, and never seen any of the stores selling Eldor OEM (ie IA) coils. I actually have a set of four Denso coils to put in at the next spark plug change. Had free credits expiring at Summit Racing and Denso was the brand they had.

As for the red cap coils, someone would have to present an engineering valid explanation of what's actually different about them and why that difference should be viewed as superior to the original coils and compatible with our engines. Many use them, but it seems like just a cosmetic touch.


I see no reason not to buy the FCPEuro option out of the two you presented.

[old guy]

As for the red cap coils, someone would have to present an engineering valid explanation of what's actually different about them and why that difference should be viewed as superior to the original coils and compatible with our engines. Many use them, but it seems like just a cosmetic touch.

Here is what HSTuning had to say about the Red Top R8 coils:

"For those of you looking for more technical data on these coil packs, here is what we've found so far with our bench ( oscilloscope ) testing:

1) These coils can be used on your FSI/TSI engine at ANY level of modification. They function just as well on a dead stock car as a highly modified one.

2) They are NOT the same coils with red housings. The secondary circuit on the R8 coils has a higher resistance (more windings) than the stock coils. In fact the secondary circuits were slightly closer to the Okadas we tested than the secondary of the stock coils.

3) We tested these between 12 and 16 volts (remember if your alternator is charging properly the input will be right around 14). We tested them between 200 and 16,000rpm. The stock coils started to misfire at a much lower rpm than the R8's with a stock spark plug gapped @ .032".

4) The spark was visibly brighter and more intense on the R8's when compared to the stock coils @ every rpm we compared in the stock rev range. We didn't compare anything under 1,000rpm.

5) We were able to open the gap on the plugs much further with the R8's than the stock plug with out misfiring at the same rpm/voltage.

6) Here is what we were finding as an AVERAGE on the secondary circuit for each of the coils.

Stock: 3.3 M ohms
5 cylinder coils: 4.75 M ohms
R8's: 5.31 M ohms
Okadas: 6.2 M ohms"

[SDF1]

WOW!! Thank you so much Smac770 for doing the deep investigation.
I'll be ordering from FCP right now.

[Smac770]

Thanks, old_guy. I'll have to look into them for the next time. Looks like Audi was already using that line on the B7 3.2L, and used them on the 2016 2.0T. And used them on all kinds of vehicles from A4 to Q7 to R8.

It's interesting to note that the first gen R8 with the CMPA (not to be confused with our CPMA flex fuel motor for 2013 automatics) V10 motor used the 07K 905 715 F (now G) coils. The V8 and other V10 (?) used the 06E 905 115 E (now F) coils. The first gen facelift R8 V8 and V10 seem to just use the 06E 905 115 E (now F). Second gen seems to use something totally different.

It seems curious for Audi to bother with two different coils that seem interchangeable. But if they can save a quarter penny per unit, you know they'll do it.

[SDF1]

Let's hope mine never fail. If they do, I'll swap them with the RED - https://www.fcpeuro.com/products/aud...reg-06e905115e

[SDF1]

4 Years the Bosch 0221604115 - (07K 905 715 G) had been good to me. I'm starting to have misfires on Cylinder 2 and 4. I replaced the spark plugs 2 months ago, so time to replace the coil packs.

Should I get the same thing or try the Red ones? What do you think?

BOSCH 0221604115
or
BOSCH 0221604800

[Smac770]

As long as there's not a concerning price difference, why not try them. Though if not tuned, not sure what value there is to be gained. The commentary leads me to believe the value is being able to run a wider gap without misfire. This would be useful when tuned, where with stock config, it seems one normally has to smash down the gap on the plugs. Maybe with the R8 coils, one could leave the plug alone with the tune and things work. But it's all about experimentation to see "what happens". If you just need the engine to run, stock works stock every time.

[SDF1]

As long as there's not a concerning price difference, why not try them. Though if not tuned, not sure what value there is to be gained. The commentary leads me to believe the value is being able to run a wider gap without misfire. This would be useful when tuned, where with stock config, it seems one normally has to smash down the gap on the plugs. Maybe with the R8 coils, one could leave the plug alone with the tune and things work. But it's all about experimentation to see "what happens". If you just need the engine to run, stock works stock every time.

I was thinking maybe the R8 coils would reduce my Cylinder 2 Misfires :)