E90/E92 B3 BiTurbo Spark Plugs

[JohnW]

I haven’t got an owners manual or a copy.

Would anyone please confirm the recommended plugs for my B3 BiTurbo. Are they the same for a standard N54 engined BMW 335i?

I know the preferred make are NGK.

Thanks

[hashluck]

E92 B3 GT3 handbook says

Engine Type K3

Bosch ZGR6STE2

[JohnW]

Thanks for the info, that’s great.

The 335i NGK plug I think is BKR6EQUP

Not sure if there are any other preferences for long life?

[TonyS]

My Supplementary Owners Handbook states, on page 29, under Engine Type K2, Bosch ZGR6STE2.
It makes no mention of NGK.

[JohnW]

Fantastic, thanks Bosch ZGR6STE2 it is then.

[hashluck]

Slight thread drift, does anyone know the difference between engine types K2 and K3?

[Adwo]

B3, K2 = 360 hp, B3 S K3 = 400 bhp. Other airbox, no auxillary cats, bit more torque. Both based on N54

[Bob]

Slight thread drift, does anyone know the difference between engine types K2 and K3?

https://www.alpina-archive.com/?page_id=9254

https://www.alpina-automobiles.com/en/p ... e90919293/

[hashluck]

Superb thanks both.

Interesting that my B3 GT3 handbook says K3 rather than K3/1

[Bob]

Superb thanks both.

Interesting that my B3 GT3 handbook says K3 rather than K3/1

Fundamentally your engine's internals are the same as a B3S BiTurbo, there were changes to the cooling system/intake and the fancier exhaust was the thing generating the extra 8PS over a standard car. I think the missing "/1" was probably laziness as much as anything. Similarly, the E34 B10 3.5 should technically be the B10 3.5/1 although very few people use that full title.