w201 Ignition Coil - Green vs Yellow Label

[liquiddog]

What's the difference between the two? The FSM says they are definitely not compatible. Mine is an aftermarket with no label.

[97 SL320]

I think there was a recent thread about coils. The only differences I can think of would be primary winding resistance. Possibly difference may be EZL or plain ignition module equipped? Does the manual give any testing info?

[liquiddog]

Yes the FSM has an entire page on this. It says the green label coil is for a-cylinder which looks like a typo. I think I have found the answer. Green label is for 8 cylinders and yellow label is for 4 or 6.

[optimusprime]

liquiddog your right . They are not intercahangable -- like you dont put a green labled coil on to a 4-6 cylinder with yellow sticker on ..The yellow coil is matched to the ecu and runs at a higher capacity . I f you have an engine thats eating coils then this is the reason it breaks down through overheating .