Emissions markets ? A, B.C...to G, and VIN number decoding US and Europe

[sbobev (Steve)]

“A and C Emission” cars (North America) supplmental air valve, it’s operated for 45 seconds regardless of coolant temp

SAV is not the same as AAV or extra air valve :-))

Not only in the book but elsewhere too:

[v12-engine] Emission classes

Hello! Does anyone know what the differences between emission classes regarding the V12 engine did mean? As I understand the 5.3 A and 5.3 C were for the low emission US, Canadian and Japanese market and the 5.3 B was for the UK market. But then there were 5.3 D, 5.3 E and 5.3 F, as well. What were the specifications for these last three emission classes? Were they the same as 5.3 B? Best regards Per-Johan– pengie1 –Posted using Jag-lovers JagFORUM [forums.jag-lovers.org]– Visit the…

Back to spark plugs. Most likely the choice will be BR6EF or BR7EF.
Either will be OK, regardless of the “emissions market” - fuel formulations have changed quite a bit in the last 1/4 century…