How to remove and clean the coolant reservoir on the Mercury Mountaineer?

Drain the cooling system. Disconnect the reservoir hoses by removing the spring clamps from the reservoir hoses and carefully twisting the coolant hoses off the reservoir. Plug the hose to prevent leakage. On 2006 and later models, the coolant reservoir is mounted on top of the radiator. Remove the reservoir mounting bolts and lift the reservoir out of the engine compartment. Clean out the reservoir with soapy water and a brush to remove any deposits inside. Inspect the reservoir carefully for cracks. If you find a crack, replace the reservoir. Installation is the reverse of removal.

Genuine Mercury Mountaineer Coolant Reservoir

Coolant Tank Reservoir

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5 Coolant Reservoirs found

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Mercury Mountaineer Radiator Tank Assembly
Part Number: 8L2Z-8A080-A
$143.28 MSRP: $209.47
You Save: $66.19 (32%)
ADD TO CART
Product Specifications
- Other Name: Tank Assy - Radiator Overflow
- Replaced by: 8L2Z-8A080-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2008-2010 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Radiator Tank Assembly
Part Number: 6L2Z-8A080-C
$143.28 MSRP: $209.47
You Save: $66.19 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assy - Radiator Overflow
- Replaced by: 8L2Z-8A080-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006-2008 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Radiator Overflow Tank Assembly
Part Number: 6L2Z-8A080-B
$143.28 MSRP: $209.47
You Save: $66.19 (32%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Tank Assy - Radiator Overflow
- Replaced by: 8L2Z-8A080-B
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2006 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
View related parts
Mercury Mountaineer Radiator Overflow Tank Assembly
Part Number: 3L2Z-8A080-AA
Product Specifications
- Other Name: Tank Assembly - Radiator Overflow; Reservoir
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 2002-2005 Mercury Mountaineer | 6 Cyl 4.0L SOHC EFI, 8 Cyl 4.6L Romeo SOHC EFI | 5-Speed Automatic Transmission 5R55S, 5-Speed Automatic Transmission 5R55W, 5-Speed Manual Transmission (M5R4), 6-Speed Automatic Transmission (6R80), 6-Speed Automatic Transmission 6R60, Four-Wheel Drive (Full Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Left Hand Drive), Four-Wheel Drive (Part Time) (Right Hand Drive), Left Hand Drive, Rear-Wheel Drive (Left Hand Drive)
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Mercury Mountaineer Reservoir Water
Part Number: F1TZ17618A
Product Specifications
- Other Name: Reservoir - Water; Reservoir
- Warranty: This genuine part is guaranteed by Ford's factory warranty.
Fits the following Vehicles:
- 1997-2001 Mercury Mountaineer | 6 Cyl 4.0L, 8 Cyl 5.0L | 4AT 4R70W, 5AT 5R55E

Mercury Mountaineer Coolant Reservoir

The Mercury Mountaineer Coolant Reservoir absorbs antifreeze as it expands and feeds it back so the cooling loop stays sealed and air-free when necessary. When excess coolant is drained into a plastic chamber, the Mountaineer Coolant Reservoir prevents any of that overflow from leaking. The reservoir is specifically intended to stop any leakage that would corrode parts or drop toxic glycol on the ground. Mercury SUV lines have seen the appearance of two designs, so the Mountaineer has employed both designs. Earlier, non-pressurized overflow versions placed the pressure cap on the radiator. At the same time, the Coolant Reservoir was very simple and applied a plastic lid that received hot coolant when there was a pressure rise and returned it when a vacuum formed during cool-down. Later pressurized expansion setups moved the pressure cap to the Coolant Reservoir, built the tank from thicker reinforced plastic, and mounted it higher than the radiator to vent excess air while keeping the fluid inside. Check the cold-engine level marks on your Mercury and prevent overheating whatever the system. When an owner of a Mercury Mountaineer makes a point of maintaining the Coolant Reservoir, the Mountaineer remains reliable, extending engine life.

We provide a wide range of Mercury Mountaineer Coolant Reservoir at the optimal prices. If you need Mercury Mountaineer Coolant Reservoir, you can shop with confidence on our website. All our OEM parts come with a manufacturer's warranty and are delivered to your doorstep with a fast delivery service.

Mercury Mountaineer Coolant Reservoir Parts Questions & Experts Answers

Radiator Tank Assembly
8L2Z-8A080-A
Q: How to remove and clean the coolant reservoir on the Mercury Mountaineer?
A:
Drain the cooling system. Disconnect the reservoir hoses by removing the spring clamps from the reservoir hoses and carefully twisting the coolant hoses off the reservoir. Plug the hose to prevent leakage. On 2006 and later models, the coolant reservoir is mounted on top of the Radiator. Remove the reservoir mounting bolts and lift the reservoir out of the engine compartment. Clean out the reservoir with soapy water and a brush to remove any deposits inside. Inspect the reservoir carefully for cracks. If you find a crack, replace the reservoir. Installation is the reverse of removal.