COOLING
Coolant Reservoir
The translucent tank where you check the coolant level.
Also called: degas bottle, overflow tank
Identification & Position
- Part name
- Coolant Reservoir
- System
- Cooling System
- Location
- Engine bay, near the radiator, mounted to the inner fender or support.
- What it does
- Holds expansion coolant and, on some layouts, is the pressurised fill point for the system.
- What it connects to
- • Radiator or engine via a hose
- • Overflow hose
- • Pressure cap
- What is above it
- Verification Required
- What is below it
- Verification Required
- What is in front of it
- Verification Required
- What is behind it
- Verification Required
- Must be removed to access it
- Verification Required
Show me how to take this apart
Dependency path — the order things must come off
Reveals the order of everything that has to be disconnected or removed to reach this part.
Symptoms & Testing
- Common failure symptoms
- • Low coolant repeatedly
- • Cracked or stained tank
- • Coolant overflowing after shutdown
- How to test it
- 1. Check the level cold against the markings.
- 2. Inspect the tank and cap seal for cracks.
- 3. Watch for bubbling, which can indicate combustion gases in the coolant.
Symptoms narrow the list of possibilities. They never confirm a diagnosis on their own — test before replacing anything.
Part Numbers
Enter the Ford part number for your exact configuration.
Enter the aftermarket cross-reference you intend to use.
Part numbers vary by engine, drive type and build date. Nothing is guessed here — enter yours from a verified source on the admin page so it stays with this component.
Difficulty & Time
Safety Warnings
- Do not open the cap when hot.
Tools Needed
- Socket set (metric and imperial)Almost every fastener on the truck
- Pliers setClips, clamps and retainers
Related Parts
Real photos online
Opens photos of "Coolant Reservoir" on other sites
- Google ImagesWidest mix of real owner and shop photos.
- Bing ImagesOften turns up different photos than Google.
- Owner forumsPhotos with the story of the repair attached.
- Parts catalogue photosClean studio shots of the part on its own.
- Video walkthroughsSee it in place while someone works on it.
These open other people's websites in a new tab. Photos there belong to whoever took them, so they are shown on their own site rather than copied into this app — and they may be a different year, engine or trim, so always compare against your own truck.