E63 M177.2 Transmission Split Cooling

ModalWorks
In stock
$799.00
$799.00

Product Details

  • -10AN fittings and lines for excellent flow
  • CNC billet aluminum end tanks
  • Bar and Plate style for increased strength and capacity
  • Core size is 575mm x 140mm x 42mm

Kit Includes

  • 1 x Bar and plate oil cooler
  • 1 x fluid splitter assembly with -10AN fittings
  • 2 x -10AN braided fluid lines
  • 2 x Oil cooler mounting brackets and hardware
  • 2 x Horn relocation brackets with mounting hardware

Product Background

On M177 Mercedes vehicles, the same coolant is used to cool down the water-to-air intercoolers as well as the transmission. Even at stock power levels, this is not sufficient, as the system quickly heat-soaks and you are robbed of power due to high intake air temperatures, which are in part driven by the transmission. Your transmission also has to fight for the same cooling capacity and generally runs hotter than desired, especially after spirited driving

Our design solves these OEM shortcomings by completely divorcing your transmission oil from the intercooler fluid circuit. Our system uses a bar and plate oil cooler that mounts to the front crash bar to directly cool your transmission without having a fluid oil/coolant exchanger. Using our custom billet fluid divorcer, we are now able to reroute the transmission oil to its own dedicated radiator, resulting in colder transmission and intake temperatures.

Measured Results · 2019 E63 S, tuned
+22°C
Stock peak IAT rise over ambient, pull 3
+14°C
With split cooling, pull 3
−36%
Average peak IAT rise, three pulls
Peak IAT rise above ambient per pull: stock +18, +21, +22 C versus split cooling +12, +13, +14 C
Method: 10-min highway warm-up, then three consecutive pulls with no cooldown, 3rd gear 4,000 rpm to 5th gear 7,000 rpm. Ambient 30°C stock / 31°C split. Customer-submitted data, October 2026. Read the full test →

Installation Instructions: HERE

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