5G-Tronic transmission adapter for M116/M117 iron block engine

5G-Tronic transmission adapter for M116/M117 iron block engine

Upgrade your classic car with modern 5g-Tronic transmission adapter. This is also known as the (big) NAG transmission (New Automatic Gearbox Generation One, or NAG1, see also https://en.wikipedia.org/wiki/Mercedes-Benz_5G-Tronic_transmission)*. Transmission numbers start with 722.6xx (2 last digits specify engines/models).

Why to install the 5g-Tronic?

1. Better fuel economy and lower emissions
2. Better acceleration with lower revs at highway speeds
3. Smoother gear changes
4. Fully adjustable software
5. Manual shifting (paddles or buttons can be connected)
6. Starts on 1st gear
7. Low service costs and lot of know-how about maintenance
8. One of the M-B strongest and most reliable transmissions
9. Several outputs for controlling electronic devices (relays, actuators)
10. Torque converter lockup

The 5g-Tronic is strong and reliable, has overdrive 5th gear. It is reasonable to service or rebuild compared with older mechanical transmissions.

The gearbox adapter developed by Elbe-Engineering facilitates connection of the 511-Tronic 5-speed electronically controlled automatic transmission to the M117 / M116 iron block engine, replacing  the 3g-Tronic 3-speed automatic gearbox.

With our adapter, the 5g-Tronic fits for the following models (both LHD and RHD vehicles):

⦁ 280 SE, SEL 4.5 (W108)
⦁ 300 SEL 4.5 (W109)
⦁ 450 SE, SEL (W116)
⦁ 450 SL, SLC (R107 / C107)
⦁ 450 SLC 5.0 (C107)

The 5-speed automatic transmission makes driving smoother and more comfortable. In addition, fuel consumption and CO2 emissions are reduced and acceleration is significantly improved. The gear change jolts are significantly reduced.

To install the 5g-Tronic box, you also have to obtain the gearbox electronic control unit instead of original TCU (transmission control unit) to bypass numerous original electronic modules like ABS / ESP / ECU / SAM. The control unit is offered by OfGear (www.ofgear.dk) in Europe.

OfGear offers plug and play controller kit for 722.6 5G-tronic transmission. Software is fully adjustable but comes with basic setup and is ready to drive. No other electronics or signals are needed from the car/chassis. Wiring harness and instructions are included.

However, an electronic speedometer unit is needed (from late R107 models) as old transmission is equipped with mechanical speedometer cable. The OfGear transmission controller has input for electronic speedometer. Speed signal is adjustable for various differential ratios.

Paddles/buttons can be connected for manual gear shifting.

Real time adjusting can be done without laptop – OfGear controller has LCD panel and joystick for navigating in menus.

Installed via Elbe Engineering’s gearbox adapter, the electronically controlled 5g-Tronic gearbox makes your classic car noticeably sportier. The car’s acceleration improves and you can manually change gears if desired.

The installation of our gearbox adapter is easy. Just disconnect the driveshaft, remove the 3g-Tronic gearbox, install the intermediate adapter according to the installation instructions, install the 5g-tronic gearbox and reconnect the driveshaft to the new gearbox.

5g-Tronic gearboxes can be obtained from the aftermarket, where there are offered in large numbers and for reasonable price. The ‘boxes are durable and mostly in good condition.

Our adapter is designed for 5g-Tronic transmission from M113 engine which is used on several MB classes with 4.3 / 5.0 / 5.4 litre engines 1998-2006, for example, W220 series S 500.

Our transmission adapter kit includes the following components:

⦁  2-piece adapter
⦁  flex plate
⦁ cover plate for bell housing
⦁ bolts/fasteners set
⦁ detailed instruction manual

 

NB! OfGear standalone electronic controller is needed to properly install the kit. Find one here: www.ofgear.dk

Get yours here:

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We have been producing custom Mercedes-Benz tuning parts since 2008, when all we started with was passion for gorgeous and powerful cars. From this time Elbe Engineering has grown exponentially and can proudly say we have customers from more than 45 different countries and on all continents.

Contact us to find the specific tuning parts, that will make your sweet ride even sweeter, if you can’t find what you need in our  shop.