The Fiat C635 6-speed manual transmission has been produced at the company’s factories since 2010 and is installed in the Fiat Doblo, Bravo, and Tipo, as well as the Lancia Delta and Alfa Romeo Giulietta. A dual-clutch transmission (DDCT) is also available under the same designation C635.
Specifications
| Type | manual transmission |
| Number of gears | 6 |
| Type of drive | front / all wheel |
| Engine volume, l | up to 2.4 |
| Torque output, Nm | up to 350 |
| Recommended oil | Tutela Gearforce 75W |
| Oil capacity, liter | 2.8 |
| Required for replacement, liter | 2.0 |
| Replacing the filter | every 60 000 km |
| Gearbox lifespan, km | ~250 000 km |
| Weight, kg | 55 |
Gear ratios Fiat C635
Using the example of a 2014 Fiat Doblo with a 1.6-liter diesel engine:
| Main | 3.83 |
| 1st | 4.154 |
| 2nd | 2.118 |
| 3rd | 1.361 |
| 4th | 0.978 |
| 5th | 0.756 |
| 6th | 0.622 |
| Reverse | 4.000 |
Using
The transmission was installed on:
- Alfa Romeo 159 (Type 939) in 2010 – 2011
- Alfa Romeo Giulietta III (Type 940) in 2010 – 2020
- Alfa Romeo MiTo I (Type 955) in 2010 – 2018
- Fiat 500L I (351) in 2013 – 2020
- Fiat 500X I (334) in 2014 – …
- Fiat Bravo II (198) in 2010 – 2014
- Fiat Doblo II (263) in 2012 – 2022
- Fiat Freemont I (JC) in 2011 – 2016
- Fiat Tipo II (356) in 2015 – …
- Jeep Cherokee 5 (KL) in 2014 – 2018
- Jeep Compass 2 (MP) in 2017 – 2022
- Jeep Renegade 1 (BU) in 2014 – 2022
- Lancia Delta III (844) in 2011 – 2014
- Opel Combo D (X12) in 2012 – 2018
Disadvantages of the Fiat C635 gearbox
- The main problem with this manual transmission is difficulty engaging first and second gears;
- Forums describe numerous options for selecting the type and amount of lubricant in the manual transmission;
- However, in most cases, this problem goes away after replacing the synchronizers;
- After 100,000 km, the bearings often start to howl when driving in high gear;
- Lubricant leaks from under the plastic breather cap are also quite common.
