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Hy guys, i've found a nismo oil pump a resonable price(RHD ) so my question is:
why the official tuner of nissan produce a oil pump more cheap than other tuners?

Is a good pump or only re-branded nissan pump?
difference between usual tomei or jun oil pump?
 

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Nismo pump is basically a stock pump with Reimax gears.
Tomei pump is absolutely different design and significantly more flow.
 

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That is a a very expensive option because with a tomei pump you need an extended sump. Still does not address the flat drive with the potential to break the drive gear.
 

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my old engine had jun pump and extended sump has done 20 - 30k miles and still going strong with an 8700 rpm limit on stock balanced crank ;)
 
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