Will this bolt directly into my washer fluid reservoir?

Yes — this pump mounts to factory locations on 02-07 Lancer sedans without modification. Your existing hoses and reservoir will accept this unit as-is.

Do I need to drain my washer fluid before swapping it out?

You'll want to drain or lower the fluid level to avoid spillage during removal and install. A small drain pan underneath makes the job cleaner.

What if the pump doesn't spray after I install it?

Check that your hoses are properly seated on the outlet barbs and that your reservoir cap is vented — a blocked vent prevents pressure from building. If spray is still weak, run the motor for 10-15 seconds to purge air from the lines.