Do I need coolant hoses or a thermostat housing to install this?

The radiator assembly ships as a core unit. You'll reuse your existing hoses and connections — test-fit yours before ordering to confirm they're compatible with the new radiator ports.

Will this work if I have the manual transmission version?

Yes. This radiator is spec'd for both automatic and manual Sonic models across the 2012–2018 generation, so transmission type doesn't matter.

What if the radiator doesn't fit or leaks after installation?

Contact ModSupply customer service with photos and details of the issue. Return eligibility and process depend on condition and timing — they'll walk you through it.