1645 - Mainshaft Bearing

- €11,70

€11,70

€11,70 - €11,70

€11,70

Aftermarket: Quality alternative. This is a quality alternative, designed to fit and function like the original part, often at a more competitive price.

Mainshaft Bearing for the gearbox mainshaft - the centre bearing that supports the mainshaft within the gearbox casing.

It locates and carries the mainshaft at its centre support, maintaining shaft alignment and allowing it to rotate under load. Commonly replaced as part of a gearbox bearing overhaul.

Vehicle Model Land Rover Defender up to 2016
Land Rover Series 2 and 3

Fitment Notes SERIES II 1958-1961 — 2.0 Petrol engine

Alternative Codes

1645R1645

In stock 7 units

3 · Gouda 4 · Drachten

Express delivery available

When will my order arrive?

Order before 15:00 (Mon–Fri): same-day dispatch for in-stock items.
UPS Express (order before 14:00): dispatched today, delivered tomorrow where available.
Netherlands / Belgium / Germany: 2–4 working days.
Other EU countries + UK: 4–8 working days.
Outside EU/UK: delivery times vary — contact us for an estimate.

Items may ship from multiple warehouses at no extra cost.

Job kits containing this part

This part is included in 0 job kit(s) below. Pick the kit that matches your vehicle and job, then add what you need.

Frequently asked questions

What is the mainshaft bearing and where does it sit?

The mainshaft bearing is the gearbox centre bearing that carries the mainshaft within the casing, holding it in alignment as it turns under drive. On the Land Rover Series 2 and 3 main gearbox it's a known wear point and is usually replaced when the box is stripped for an overhaul.

How does this aftermarket bearing differ from the OEM mainshaft bearing?

This is the aftermarket version of the Series 2 and 3 mainshaft bearing, supplied by Britpart, while the OEM equivalent is stocked separately. Both fit the same gearbox mainshaft centre support listed for the 1958 to 1961 Series II 2.0 petrol. Dimensions match, so choose on brand and warranty preference.

Should the mainshaft bearing be replaced on its own?

Replacing the mainshaft bearing usually means stripping the Series 2 and 3 gearbox, so most rebuilders renew the other gearbox bearings at the same time rather than return to the job later. The bearing presses onto the mainshaft centre support. It's a specialist gearbox task rather than a roadside fix.