Would this work ok on a TBI install, or would it be too much psi?

It does not have an internal regulator so you would either need a filter/regulator combo or a regular at the fuel rail. I have it installed with a sniper EFI TBI unit that has an internal regulator and it runs at 60psi.

So you wont ship to california?

This seems to be an Amazon problem, stemming from how the listing was initially created. Since this is not technically a 'Replacement part' and is a performance fuel pump, it falls under CARB regulations.

Do this fit a 2014 Yamaha 250 four stroke

I don't really know about motorcycle fitment. I do know that the Walbro pumps are poorly made and I returned this one. Delphi makes better pumps, whether they make them for motorcycles I do not know. Best thing to do is go to the Delphi web site and plug in your application to get a part number. Or Google it "Delphi fuel pump Yamaha 250CC" or the model number of your bike.

Gsl392 Fuel Pump | Desertcart UNITED STATES

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Description

⚡ Fuel your drive with precision and power!

BUILT TO LAST - Robust all-metal construction ensures long-lasting reliability under extreme conditions.
PRECISION FIT - Machined exterior with exact inlet/outlet sizing (10 mm x 1.00 Female) for easy installation and leak-free performance.
POWER YOUR RIDE - Available in multiple pressure and flow configurations, including high-pressure variants for turbocharged engines.
TRUSTED ENGINEERING - Manufactured by TI Automotive, the industry leader behind the Walbro brand, guaranteeing premium quality.
SEAMLESS COMPATIBILITY - Designed to fit most EFI systems, including turbo and supercharged setups—upgrade without hassle.

The Walbro GSL392 Fuel Pump is a high-performance electric in-line pump featuring a durable all-metal shell, multiple pressure and flow options, and universal compatibility with EFI, turbo, and supercharged engines. Manufactured by TI Automotive, it delivers reliable fuel delivery with precision fitment for professional-grade automotive applications.

Specifications

Manufacturer	Walbro
Brand	Walbro
Model	Fuel Module
Item model number	GSL392
Exterior	Machined
Manufacturer Part Number	GSL392
OEM Part Number	GSL392
Position	Bottom
Special Features	Automotive
Lift Type	Electric
Item Weight	454 g

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