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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 |
J**R
Great quality
This fit perfectly in my truck and has held up great
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
M**N
Perfect fit.
Arrived quick. Fit perfectly. Feels and looks well made. Installation was quick and easy. Was cheaper than Auto Zone. Save yourself some money and DIY. Only have to remove 1 nut, 1 bolt, and 3 hose clips. Done in less than 10 mins.
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
Decent Product
Works and functions as it should. The holes at the bottom for the bolts did not line up like it should.
J**U
Perfect Replacement for Expensive OEM part
GM has a problem with these shunt tanks cracking at a high-stress transition area, but the Dorman part appears to have a different design in this area, which resolves the cracking problem and is a fraction of the price of the GM part!
J**N
Perfect fit
Only took a few minutes to replace.
Trustpilot
2 days ago
2 weeks ago
