[Paul Bailey]

I am planning on installing a higher capacity fuel pump and rather than crimp the wires together, I wanted to solder them and cover the solder joints with heat shrink. Can standard heat shrink for electrics be used?

[EagleAutosports]

Yes they can. Much better than any crimp, butt connector, twisty/electrical tape could ever do. That's the best way to do it and for it to be weatherproof too.

[Paul Bailey]

Thank you for your answer. I should have added whether standard heat shrink can be immersed in gasoline.