1973-1977 Chevrolet Corvette C3 Coolant Radiator Expansion Tank Cap – 340194 345478

Restoring a C3 Corvette or just need to replace that crusty old expansion tank cap?

This one's for 1973-1977 models and fits like the original.

Made by Mid America Motorworks, it's a direct replacement for OEM numbers 340194 and 345478.

The cap is plastic but built tough – they've durability tested it so you know it'll last.

No drilling or modifications needed, just pop it on and you're good to go.

It's made in Taiwan to quality standards and comes with the Mid America Motorworks part number 609593.

If your current cap is leaking, cracked, or just looks out of place in your engine bay, this is the fix.

Keeps your cooling system sealed and working right.

Perfect for restorations or just maintaining your classic Vette.

Get your C3's cooling system back to spec with this direct-fit replacement cap.