Discovery 4 Rear Differential Exchange

Rear Differential Exchange for the Discovery 4: a remanufactured rear differential with new bearings and fresh oil.

The differentials on these vehicles are strong when they are fed the right oil and are not asked to do things they were never built for, like big tyres and a heavy right foot on a locked centre diff. The Discovery 3 and 4 and the Sport L320 rear electronic locking diff is a known failure; the Defender Rover diff breaks shafts before it breaks gears. Everything here says what it is rated for and what it is not. The Discovery 4 is the Discovery 3 made better, but the 3.0 V6 diesel carries a crankshaft failure risk that every owner ought to know about.

Specification and fitment

• Fits: Discovery 4, chassis code L319
• Engine: 3.0 TDV6 and SDV6 diesel, 5.0 V8
• Production dates: 2009 to 2016
• Quality: Remanufactured or New Unit
• Part number: cross referenced to the factory part number for your VIN and confirmed before dispatch, because supersessions on these vehicles are frequent and one printed number would be wrong for somebody
• The failure this addresses: a whine on the overrun or a clunk on take up
• Labour time: about 4 hours
• Coding: none required. Fit it and drive
• Also needed: oil
• Torque: to spec
• Weight: about 45 kg
• Warranty: two years or 24,000 miles, whichever comes first

What arrives

• Rear differential
• Oil

Fitting

Labour guide: about 4 hours. Land Rover changes specification mid production, often by VIN rather than by model year, so send the VIN or the registration with the order and we confirm the part against the build data before anything leaves. It takes two minutes and it is the difference between a part that fits and a return. We are an independent Land Rover specialist and parts supplier. We are not Land Rover or Jaguar Land Rover and are not appointed by them; the model names are their trademarks and are used here to describe fitment. Everything we sell is chosen for vehicles that actually get used: towed with, loaded, driven through water and parked in fields, rather than for the brochure.

Which version to buy

Remanufactured is stripped to the casting, measured, rebuilt with new bearings seals and wear parts and rig tested, with a surcharge refunded on your old unit. New Unit is a brand new unit rather than an exchange, for when your old one is past rebuilding or you cannot be without the vehicle while we assess the core.