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The Dorman 603-973 Front Engine Coolant Reservoir is a direct replacement part designed to fit select Cadillac, Chevrolet, and GMC models. Engineered for durability and ease of installation, this reservoir is manufactured from high-quality materials to withstand the rigors of underhood heat and vibration. With over 100 years of automotive aftermarket experience, Dorman ensures that this product meets the highest standards of quality and reliability.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | 603-973 |
| Item Weight | 2.59 pounds |
| Product Dimensions | 14.23 x 8.7 x 12.25 inches |
| Country of Origin | Taiwan |
| Item model number | 603-973 |
| Exterior | Machined |
| Manufacturer Part Number | 603-973 |
| OEM Part Number | 13502354; 22856231; 84368362 |
| Hollander Number | 671-00359 |
S**.
Common issue resolved.
Common issue and this fixed the leak I had on my 2014 Silverado LT v8 5.3.
R**.
Quality reservoir
Received item and appears to be factory item. Removed and installed with minimal issues and fitment was exactly like the old one. Ran for nearly half an hour with no apparent problems and no visible leaking. Dollar for dollar this is a good replacement item and it looks exactly like the old one too. Test will be in a few days to see if I need to add more coolant. Will update later. Pic is of the old one I replace. Leaking internally?? No visible damage but definitely leaking.
J**R
Great quality
This fit perfectly in my truck and has held up great
T**.
Worked Perfectly!
My old one was like 8 years old and started leaking on the bottom of it, the new one fit and worked perfectly. Great product
K**N
Direct replacement
Bolted right in to the original location.
J**R
Decent Product
Works and functions as it should. The holes at the bottom for the bolts did not line up like it should.
J**Z
Good item
Good product easy installation
R**E
Great Quality worked great
Was tested and certified, seamed to be well made, and fit perfecrt, and solved the problem
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