The Mazda SJ6A-EL 6-speed automatic transmission has been produced in Japan since 2005 and is installed on the popular MX-5 convertibles and all their varieties such as Miata and Roadster. In fact, this transmission is one of the varieties of the famous Aisin TB61SN automatic transmission.
Mazda gearboxes: F3A, G4A‑EL, GF4A‑EL, F4A‑EL, AW6A‑EL, FW6A‑EL / GW6A‑EL, SJ6A‑EL.
Specifications
| Production years | since 2005 |
| Type | automatic transmission |
| Number of gears | 6 |
| Type of drive | rear |
| Engine volume, l | up to 2.0 |
| Torque output, Nm | up to 350 |
| Recommended oil | Toyota ATF WS |
| Oil capacity, liter | 7.4 |
| Replacing the oil | every 60,000 km |
| Replacing the filter | every 60,000 km |
| Gearbox lifespan, km | ~400 000 |
| Weight, kg | 85 |
Gear ratios Mazda SJ6A-EL
Using the example of a Mazda MX-5 2010 with a 2.0 liter engine:
| Main | 4.100 |
| 1st | 3.538 |
| 2nd | 2.060 |
| 3rd | 1.404 |
| 4th | 1.000 |
| 5th | 0.713 |
| 6th | 0.582 |
| Reverse | 3.168 |
The transmission was installed on:
- Fiat 124 Spider I (348) in 2015 – 2019;
- Mazda MX-5 III (NC) in 2005 – 2015; MX-5 IV (ND) since 2015;
- Mazda RX-8 I (SE) in 2005 – 2012.
Disadvantages of the Mazda SJ6A-EL gearbox
- This is a strong automatic transmission, designed for much greater torque than in Mazda engines.
- However, owners of sports models are often prone to overly aggressive driving.
- Therefore, the gearbox oil quickly becomes contaminated with products from wear of the torque converter clutches.
- And dirty lubricant significantly reduces the life of the solenoids, so update it more often.
- If you drive with a heavily worn torque converter clutch, it will break the oil pump bushing.
