In search of a U-joint

[coffee break]

I am doing some routine checks and found the car is missing a grease fitting on the rear U-joint. 

My question is about finding the replacement part. The documentation I have on the 1995 Caterham indicates the rear axle is from a Morris Marina.

Does this apply to the U-joint also?

[CarlB]

There aren't that many different U joints. If you go to a drive shaft shop, they will probably identify it for you. 

[7Westfield]

If you just want to replace the zerk, it wouldn't be a surprise if it's just a 1/4-28 thread, very common size

 

Otherwise, they are listed by cup OD and width across the outside of the cups  it might be same as an MGB-

 

don't know about Morris, but Ford diffs came with several different flanges or yokes

[Timothy Keith-Lucas]

As Carl says, there aren't that many made. If you don't find the one you want here, back up to "U joints" and try again.

 

https://www.mcmaster.com/products/u-joints/high-torque-single-u-joints-8/

[CarlB]

My Ford differential uses the same UJoint as a MGB