




🛠️ Upgrade your ride’s lifeline with precision-engineered coolant control!
The Dorman 603-383 Coolant Reservoir is a durable, direct OE replacement part designed to fit select Buick and Chevrolet vehicles. Made from high-quality plastic, it withstands engine heat and vibration while preventing coolant loss with its included reservoir cap. Manufactured in the USA and quality tested for reliable, trouble-free installation and performance.




| Manufacturer | Dorman - OE Solutions |
| Brand | Dorman |
| Product Dimensions | 22.1 x 16.56 x 21.08 cm; 494.42 g |
| Item model number | 603-383 |
| Manufacturer Part Number | 603-383 |
| OEM Part Number | DAKG-15390; FRT1216C; 13256823; 13393368; 13465094; 13502353 |
| Position | Center |
| Material | Plastic |
| Assembly Required | No |
| Manufacturer | Dorman - OE Solutions |
| Country of Origin | USA |
| Item Weight | 494 g |
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