Vectra C Z22SE main berings

Hi friends,
im rebuilding now a Z22YH engine. Im searching in my country for GM90537821 Gm90537330 main bearings but i cant find them. Also i looked up King bearings MB5413SI, but also they are unavaible here. Does anybody know PNs, if they exist, of more aftermarket companies producing a good quality main bearings for this engine?
 

vocky

Staff
you can also use the B207 and A20NFT bearings

I used these bearing sets from Vauxhall

full set mains = 12591092
full set big ends = 12591093
 

vocky

Staff
all B207 bearings are the same, they are both a 2.0 capacity, quite why Saab decided to call a 2.0 litre a 1.8 is rather odd
 
Hi vocky, thanks for your reply. I tought thatt the 1.8 was a real 1.8 (never had one exact), but seems like my troubles regarding this engine build never stop. I sucessfully ordered a set of genuine 12591092 STDs. But i was a bit disappointed that theres no STD marking on them. I must check them with micrometer. Did some you dear members of this forum encountered this kind of marking, without explicitly stamped STD?
 

vocky

Staff
those part numbers are for standard sized bearings, the undersize have a different part number and are four times the cost !
 
Theyre so expensive??? I doublechecked them yes they are STD.
 

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