Hi can anyone help me on this . Thanks

 

Front main seal.....

 

Could be the cam seal too.

 

To simplify for the OP, cam seal is behind the top sprocket/gear/cog, front main seal is the bottom one behind the timing belt cog..

 

Cheers thanks for that are they all the same size in b series engines mine in a b16a2 out of 1990 eg

 

Yes, the honda 91212 PR3 003 fits all the b series engines.

 

All "B" series VTEC cam seals are the same... however, the part number that Maxcapacity mentioned above is the Front main seal, and this seal does NOT fit the cam seal locations. The cam seal part number is: 91213-PR3-004. In order to replace all three potential leaking seals, you will need TWO of the cam seals (91213-PR3-004) and ONE front main seal (91212-PR3-003).

Yes, '88-01 "B" series oil pumps all use the same front main seal part number.

 

That's great il get ordering them and get this leak sorted thanks again 👍👍

 

What's the outer diameter on the front main seal , does 100mm sound right ?

 

No, that sounds more like the REAR Main Seal.

 

OK and what is the diameter off the front main seal then ?

 

38mm ID x 50mm OD x 7.4mm