Selected car

Mercedes S -Class (W221) S420 CDI 2006-2009

3996 ccm - 235 kW (320 HK) - 730 Nm

Depending on which engine you have in your car, you have different chiptuning alternatives. You have 5 alternatives for your Mercedes S -Class (W221) S420 CDI 2006-2009. Please confirm that you have selected the correct engine from the vehicle list. These are the alternatives for -Class (W221) S420 CDI 2006-2009 with 320 HP. The product images are illustrative and colors may vary from actual product.

Choose chip type. The price includes customs, taxes and fees, no surprises!

Alternative 1

Eco-Power

Our most affordable box, great power and fuel savings

GBP £209,-

In stock

Effect with chip
377 HP ( +18%)

Torque with chip
840 Nm ( +15%)

Alternative 2

Speed

Spped technology - more power!

GBP £259,-

In stock

Effect with chip
393 HP ( +23%)

Torque with chip
876 Nm ( +20%)

Alternative 3

Ultimate

Our top model, most power and durability with quality electronics and remote control included for on/off.

GBP £329,-

In stock

Effect with chip
402 HP ( +26%)

Torque with chip
894 Nm ( +23%)

Alternative 4

RXT Ultimate

Set of both Ultimate and RXT Power Booster. Maximum effect and fuel savings controlled from your drivers seat.

GBP £419,-

Preorder! Coming soon!

Because of the global shortage of components we haven't been able to obtain enough of this product and may be out of stock.

Effect with chip
406 HP ( +27%)

Effect about 320 HP at 50% throttle