2 types of Brembo rear disk?

[VQ35UK]

There are 2 different Brembo rear disks for a 350z on euro car parts.

 

Does anyone know which ones are OEM?

 

http://www.eurocarparts.com/ecp/c/Nissan_350Z_3.5_2005/p/car-parts/regular-service/car-service-parts/brake-discs/?10470179A&1&c26c3c67f0cc3892a980c899b7e9e2f5529021bf&000027

 

http://www.eurocarparts.com/ecp/c/Nissan_350Z_3.5_2005/p/car-parts/regular-service/car-service-parts/brake-discs/?10470099A&1&3fdebdb49f861914fba3f4c363cb2238a9b5a0ee&000027

[Aashenfox]

They are both valid OEM replacement. The 292mm discs are for base models without brembo calipers (but they are brembo discs, hence your apparent confusion I assume). The correct rear disc spec for brembo caliper equipped cars is 322x22. For the sake of completeness, the front discs are 324x30.

[Rob350]

They are different diameters, the cheap ones are 292, and the expensive ones are 322 so maybe measure your old ones and see what diameter they are

[VQ35UK]

Cheers both!