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Hey guys, I've searched but couldn't come up with an answer to my question.

I know the timing belt and the idler pulley are identical for all RB engines.

But what about the tensioner pulley?

It seems like there are different versions. One for early RB25 engines, one for late RB25 engines and one for RB26DETT. Part numbers I've found are 13070-73L00 and 13070-5L300, both early RB25. And AY460-NS010 for late RB25. Nothing found for RB26DETT.

Can anyone confirm the correct part number please?

Which one should I use for my R33 GTR? And which one for my R34 GTT?
 
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