Buy OEM 1999 Toyota Part # 164700D010 (16470-0D010). Engine Coolant Reservoir (Right). Engine Coolant Expansion Tank - Repair or Replace A failed expansion tank can cause the cooling system

Engine Coolant Reservoir. Tank, Reserve.
A container that holds Engine Coolant.

Engine Coolant Reservoir

Fits Corolla

Engine Coolant Expansion Tank - Repair or Replace
A failed expansion tank can cause the cooling system in your 1999 Toyota to leak antifreeze, or it can cause your engine to overheat. If you're losing coolant, contact our service department to avoid engine damage.