🚗 Upgrade your ride with the ultimate universal coolant reservoir!
The Dorman 603-001 Coolant Reservoir Bottle is a robust, universal-fit coolant tank crafted from heat- and vibration-resistant plastic. Featuring three mounting holes and a vented cap, it offers flexible installation options. Designed in the USA and supported by Dorman’s century-long aftermarket expertise and ASE-certified technical support, it’s a reliable upgrade for diverse automotive needs.
| Manufacturer | Dorman Products |
| Brand | Dorman |
| Model | Coolant Reservoir |
| Item Weight | 9.6 ounces |
| Product Dimensions | 7.5 x 4.25 x 8.25 inches |
| Country of Origin | USA |
| Item model number | 603-001 |
| Is Discontinued By Manufacturer | No |
| Exterior | Machined |
| Manufacturer Part Number | 603-001 |
| OEM Part Number | 0 |
T**E
Works as a small windshield washer
Worked great for relocating the windshield washer fluid tank in my 2005 4runner. Look on YouTube for how to DIY videos if you’re looking to do something similar. I was worried it would be too small, but I’ve been super happy with it and I don’t have to refill as much as I thought I would.
T**N
Works for radiator expansion tank
Cost effective and arrived fast, keeps the coolant form ending up on the ground.
R**M
Works perfectly for my '75 F250. Still going strong after a year
UPDATE 3/28/18:This reservoir has been in my truck now for over a year and is still fine. No leaks, cracks or anything.ORIGINAL:I have a 1975 F250 that needed an overflow bottle so I bought this to add to the engine bay. The bottle ended up fitting perfectly in the left side of the engine bay just below the battery and fit some holes that were already there with no drilling. The plastic is nice and thick and the cap is snug and secure. The inlet barb on the bottom was already open on mine so no need to drill. Also, contrary to what others have written, the cap on mine is vented. There is a little hole in the middle that allows the air to escape. It is a pinhole so if I wanted a closed system I could easily plug it. Glad I found this and I recommend it if you have the room.
H**E
Pretty well made..
I'm using it for diesel fuel for a parking heater. Extra tank to just turn a petcock valve and let it refill the larger parking heater tank when it is low enough to do that. . Plus I put an inline filter in the line.
S**Y
Worked well as
Used as a mini gas tank , worked well.
E**R
Does what I need
Works great
J**R
Not the size advertised
This tank is much smaller than advertised. The listing shows 7.5 x 4.25 x 8.25 inches, when in fact is 6 7/16" × 4 1/16" x 6 3/8"
C**E
Easy to locate
Glad I found this - Dorman products might not be flashy but they always get the job done. The 3 mounting tabs make it very stable. Perfect size to fit in tight places. 5/16 heater hose was a perfect fit to it. Most importantly you can see the level unlike flashy metal choices out there. Looks better than the wire cage design too.
Trustpilot
1 week ago
1 month ago
