rear main seal advice

Hi all today my clutch went so while I'm doing it I'm going to change the rear main seal too as it leaks. Iv been searching into this on Here and on the internet and while looking at seals online and I'm unsure which one to order I understand its best to order a genuine but if seen many listed as genuine and the price is vastly different!

Has anyone changed theirs and has one in perticular to reccomend as I want to do this right!

Many thanks

3 or 5 bearing

Oops very sorry its a discovery 200 TDI in a 90

err2532g plus gasket err1440

Cheers! Are they theese?

ERR2532G | Rear Crank Oil Seal - OE Manufacturer

ERR1440 | Gasket

Thank you.

Would there be enough room to do a rear main seal with the gearbox off and the engine in its mounts?

Many thanks tom.

Do I need to drain the engine oil to change the rear main seal?

Cheers!

no oil level is only half way up sump

Great thank you.