Land Rover Defender 300Tdi R380 Gearbox and Transfer Box

Land Rover Defender 300Tdi R380 Gearbox and Transfer Box for Sale

Land Rover Defender 300Tdi R380 Gearbox and Transfer Box for Sale. These two come as a pair. The R380 is the five speed gearbox that came behind the 300Tdi, and the transfer box bolts to the back of it to send drive to the front and rear axles. If you’re replacing a failed box, doing a rebuild, or converting a truck to 300Tdi running gear, this is the setup you need.

Why they fail. The R380 is a strong box but it doesn’t last forever. Fifth gear is usually the first to go, especially if the truck has been worked hard or run low on oil. You’ll hear it as a whine that gets louder the faster you go, or it’ll jump out of gear under load. The mainshaft and layshaft bearings wear, and once they’re gone the whine spreads to the other gears. The transfer box is tougher, but the input gear splines wear where they meet the gearbox output shaft. If those splines strip, you lose drive completely. It’s worth checking them before you fit anything, because it’s a common failure and easier to spot on the bench than in the vehicle.

A few things to check before you buy:

• Confirm it’s a 300Tdi R380. Earlier Defenders used the LT77, and they don’t swap without work.

• Ask about mileage and any rebuild history.

• Check for play in the output shaft and noise when turned by hand.

• Look at the input gear splines on the transfer box. Worn or pointed splines mean it needs replacing.

• Check the bellhousing and mounting points match your vehicle.

• Ask whether the transfer box is the ratio you need. Defender ratios vary, and it matters if you tow or run bigger tyres.

Fitting is a two person job. The pair is heavy, and lining the gearbox back onto the clutch takes patience.

You can buy this gearbox and transfer box from landrovergenuinepart.com. Order online, or email us first if you want to confirm fitment before you purchase. We’d rather check the details up front than have you send a box back later.

When you get in touch, tell us your model, year and current engine. That’s usually enough for us to confirm whether this will go straight in.

For availability, pricing and compatibility, contact us before ordering.

Website: landrovergenuinepart.com
Email: info@landrovergenuinepart.com