🚗 Upgrade your ride’s cooling game with confidence and style!
The Dorman 603-100 Non-Pressurized Coolant Reservoir is a direct-fit replacement part compatible with select Cadillac, Chevrolet, and GMC models. Made from durable plastic, it withstands underhood heat and vibration, ensuring reliable performance. Backed by a century of aftermarket expertise, this reservoir offers seamless installation and precise fitment, helping maintain your vehicle’s cooling system with ease.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | FLUID RESERVOIR |
| Item Weight | 1.5 pounds |
| Product Dimensions | 11.5 x 8.75 x 7 inches |
| Item model number | 603-100 |
| Is Discontinued By Manufacturer | No |
| Exterior | Ready To Paint If Needed |
| Manufacturer Part Number | 603-100 |
| OEM Part Number | 650373; DAKG-650373; FRT1203C; RC77; SK603100; 15630112; 15650373 |
| Hollander Number | 671-218 |
| Position | Front |
L**S
Perfect fit
Perfect fit in my 98 k2500 Chevy obs
D**N
I like it. Nice and clear
Works and no leaks.
K**T
Great Product
Great Product
J**E
Dorman Doesn't Disappoint
Needed to replace the original coolant reservoir on my 1998 OBS Silverado. This was a perfect replacement part. Quality, fitment, price and easy install!!
T**R
Like in kind replacement
I was replacing an old version of this and the one that something that was more cleaned up. Super quick, easy install my only recommendation I would order new bolts check complete the cleaned up look
P**Y
Plastic deteriorates
Easy to install and go price
P**Z
Buen producto lo recomiendo
Buen producto lo instale y no tuve fallas lo puse a un Silverado 95 lo recomendaría y lo compraría de nuevo
R**A
Great job.
Fits just right, thanks.
Trustpilot
1 week ago
3 days ago
