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🚗 Keep your engine cool and your ride flawless — don’t let leaks slow you down!
The Dorman 603-383 Pressurized Coolant Reservoir is a direct-fit replacement part designed for select Buick and Chevrolet models. Manufactured with durable materials and upgraded metal fittings, it withstands engine heat and vibration while ensuring a perfect fit. Trusted by thousands with a 4.7-star rating, this reservoir offers a cost-effective, reliable solution to maintain optimal engine cooling and prevent overheating.










| ASIN | B00NF1QZO6 |
| Best Sellers Rank | #19,676 in Automotive ( See Top 100 in Automotive ) #9 in Automotive Reservoirs |
| Brand | Dorman |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,859) |
| Date First Available | September 8, 2014 |
| Exterior | Machined |
| Item Weight | 1.09 pounds |
| Item model number | 603-383 |
| Manufacturer | Dorman Products |
| Manufacturer Part Number | 603-383 |
| Model | 603-383 |
| OEM Part Number | DAKG-15390; FRT1216C; 13256823; 13393368; 13465094; 13502353 |
| Position | Center |
| Product Dimensions | 8.7 x 6.52 x 8.3 inches |
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