Range Rover · L320 · 2005–2013
Range Rover Sport (L320) ring gear
Crown wheels and flywheel ring gears for Land Rover axles and engines.
Matching ring gear to a Range Rover Sport (L320)
The Range Rover Sport (L320) (2005–2013) was sold here with 5 different engines. Gearbox: Automatic. Send the VIN and engine number with your enquiry so the parts team can confirm the correct ring gear before quoting.
Know the part
Understanding Range Rover Sport (L320) Ring Gear
The term ring gear covers two different parts. In an axle, the ring gear, also called the crown wheel, is the large gear in the differential driven by the pinion. It is always sold and fitted as a matched crown wheel and pinion set. On the engine, the starter ring gear is the toothed ring around the flywheel or flexplate that the starter motor engages.
A damaged crown wheel usually shows up as whine or clunks from an axle, while a worn starter ring gear causes grinding when starting.
Further reading
- Differential (mechanical device) – Wikipedia
Background on crown wheels and pinions in differentials.
Common Questions About Range Rover Sport (L320) ring gear
Can I replace just the crown wheel?
No. The crown wheel and pinion are machined and matched as a set, and must be replaced together and set up with the correct backlash and preload.
Do I need to know my axle ratio?
Yes. Both axles on a four-wheel-drive Land Rover must have the same ratio. Check the part number or count the teeth on the crown wheel and pinion.
Can a starter ring gear be replaced on its own?
On some flywheels the ring gear is a separate press-fit part; on others, especially dual-mass flywheels, the flywheel is replaced complete.
Who should set up a crown wheel and pinion?
A differential specialist. Incorrect setup causes noise and rapid wear.
Other Range Rover Sport (L320) transmission
Not sure which part fits?
Share your VIN or engine code and the parts team will check the correct part for your Range Rover Sport (L320).