Defender · L663 · 2020–present
Defender (L663) transmission
Gearbox, transfer case, differential and clutch parts for Land Rover 4x4 drivetrains.
What is specific to the Defender (L663)
Gearbox: 8-speed automatic.
Drivetrain: Permanent all-wheel drive with an automatic gearbox and a two-speed transfer case. Air suspension on many versions: at launch it was standard on the 110, while the 90 could have coil springs or air suspension.
Have this ready when you enquire
- The 17-character VIN from your licence document, which identifies your exact L663 (sold here 2020–present) and its build.
- The gearbox type: 8-speed automatic.
- Which engine it is paired with (D240 2.0 four-cylinder turbodiesel (Ingenium), P300 2.0 four-cylinder turbo petrol (Ingenium), P400 3.0 six-cylinder turbo petrol mild hybrid (Ingenium) and D300 3.0 six-cylinder turbodiesel), as that changes the gearbox and driveline parts.
- A photo of the old part or its part number, if you can get to it.
Known Defender (L663) transmission faults
None of the Defender (L663) faults we track fall in this system, so there is no known weak point to warn you about here. Send the part name with your VIN and the team will confirm the right transmission for your vehicle.
Replacing the whole unit? A complete unit may cost less than rebuilding one on an older Defender (L663). See gearboxes for sale , transfer cases for sale or differentials for sale .
Defender (L663) transmission questions
Do Land Rover automatic gearboxes need fluid changes?
Some automatic gearboxes were described as filled for life, but many transmission specialists recommend changing the fluid and filter, particularly on vehicles that tow, off-road or operate in heat. Use only the fluid specified for your gearbox.
What does a transfer case do?
It splits drive between the front and rear axles. On models with a two-speed transfer case, it also provides a low-range gear set for steep terrain, towing boats up slipways and slow technical driving.
Transmission for other Defender models
Other Defender (L663) systems
- Engine Parts
- Brakes
- Suspension
- Air Suspension
- Electrical
- Lighting
- Exhaust
- Cooling
- Fuel System
- Body Parts
- Interior
For how these parts work and the signs of wear, read the Land Rover transmission guide.
The right transmission for your Defender (L663)
Share the VIN and engine number and the SparesBoyz parts team will check fitment before quoting.