Associate
- Joined
- 1 Oct 2007
- Posts
- 949
- Location
- Hawkes Bay , NZ
Took me about 4.5-5 hours in total (but I did spend a fair bit of that cleaning up the oil spray that had gathered in the recesses on the valve covers and nearby bits!)
I think the book time is 3-4 hours - the most awkward plug was the driver side rear (cyl 4 iirc) as space gets a bit tight.
If its the M113K engine on your C55, it'll be the same plug. 3588 is the type code for the NGK ones I used
edit: In case you find it useful, I documented the entire thing here
Just checked, mine are IFR6D 10 plugs. M113 engine.