What can cause a fuel pump to fail?

wideglideleon

common weakness with our Z's.

CDThomas

That's not good. About how long will one last (OEM and aftermarket)?

2011 Nismo#91

I don't think there is an good time frame, some go soon others go never. Rule of thumb, if your going to access your OEM fuel pump you might as well get the hat replaced.

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GTR TT 493Whp/431lbft, Ecutek, Southbend 6puck,Quaife, RPM RollBar 4Point, R888R, JRZ RSPro F(10R/10C) R(10R/6C) 1000f500r inlbs+150inlbs Tender, SPL everywhere.Full Specs

JARblue

The Nissan OEM tophat is plastic. CJ Motorsports makes a billet one. There is no comparison between the two. The CJM one will last the life of the car and then some.

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Quicksilvers

Agreed the Nissan OEM top hat is made of hard plastic but it is a weak point and more time than not they have a tendency to break/crack. Mine cracked once before and I replaced it with the CJ Motorsports billet top hat. If you replace it another Nissan OEM top hat it will just break/crack again in the future so,definitely install a aftermarket unit. Also this is the best time to change your internal fuel filter as well.This would also be a great time to upgrade your fuel pump if your Z is in need of more fuel. Frequently running on empty is not good for the life of your fuel pump. Nissan highly recommends only using premium top tier gasoline in all the 2009-2019 370Z models (Chevron,Texaco,Shell etc.)