Mercury Mountaineer Coolant Reservoir Caps

Your Mercury Mountaineer will be happy to know that the search for the right Coolant Reservoir Caps you’ve been looking for is over! Advance Auto Parts has 7 different Coolant Reservoir Caps for your vehicle, ready for shipping or in-store pick up. The best part is, our Mercury Mountaineer Coolant Reservoir Caps start from as little as $9.79.

When it comes to your Mercury Mountaineer, you want parts and products from only trusted brands. Here at Advance Auto Parts, we work with only top reliable Coolant Reservoir Caps brands so you can shop with complete confidence. Some of our top Coolant Reservoir Caps brands are Carquest Premium and Dorman. We’re sure you will get the right product to keep that Mountaineer running for a long time.

We even have reviews of our OEM and aftermarket Coolant Reservoir Caps products to help you buy with confidence. Hear from other customers via the 640 reviews on parts for your Mercury Mountaineer.

Shop online, find the best price on the right product, and have it shipped right to your door. If you prefer to shop in person for the right Coolant Reservoir Caps for your Mountaineer, visit one of our local Advance Auto Parts locations and you’ll be back on the road in no time!

Compare 16 Mercury Coolant Reservoir Caps

Carquest Premium – Radiator Cap: 20 PSI (Part No.10267)

Radiator Cap: 20 PSI

from

$21.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
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Carquest Premium – Radiator Cap: 13 PSI (Part No.10227)

Radiator Cap: 13 PSI

from

$11.99
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.54208)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$14.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Carquest Premium – Engine Coolant Reservoir Cap (Part No.10238)

Engine Coolant Reservoir Cap

from

$9.79
Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Carquest Premium – Radiator Cap: 13 PSI (Part No.10327)

Radiator Cap: 13 PSI

from

$18.79
Crafted to meet the exact specifications set by Original Equipment Manufacturers (OEM), these products are engineered for effortless installation and removal. Constructed from premium-grade components, incorporating proper relief and vacuum valves, they ensure optimal performance even in the most demanding automotive cooling systems. Rigorously quality-tested, these components provide exceptional, out-of-the-box performance and superior durability to meet or exceed the highest standards of today’s vehicles.

Product Features:
  • Safety lever to vent coolant pressure before removal
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Motorcraft – Original Equipment Radiator Cap (Part No.G1010196371MTR)

Original Equipment Radiator Cap

from

$7.28
The Motorcraft Original Equipment Radiator Cap is an OES replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:
  • Standard and safety vent radiator pressure caps available
  • Extensive coverage for most cars and trucks, as well as farm and construction equipment
  • Swivel-seal radiator caps are designed to provide increased durability and can be removed without damage to the rubber atmospheric seal
  • Zinc-plated to resist corrosion and rust
  • Pressure valve springs are made of stainless steel to maintain calibrated pressure throughout the service life
  • Rubber pressure valve gasket resists high temperatures and deterioration from coolant and additives
  • Pressure and vacuum relief features help extend radiator and hose life
  • Prevent accidental cap removal with positive low-pressure stop feature
See More

Carquest Premium – Engine Coolant Reservoir Cap (Part No.10251)

Engine Coolant Reservoir Cap

from

$36.49
Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Carquest Premium – Engine Coolant Reservoir Cap (Part No.10250)

Engine Coolant Reservoir Cap

from

$10.49
Manufactured to meet all OEM specifications. Designed to be easy to install and remove. Manufactured from high quality components with proper relief and vacuum valves. Quality tested to stand up to even the most demanding automotive cooling systems.

Product Features:
  • Maintains proper cooling system pressure
  • Easy installation and removal
  • 100% tested to ensure proper pressure and longevity
  • Meets all OEM specifications
See More

Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.54212)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

from

$16.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Dorman – Help – Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack (Part No.82598)

Engine Coolant Reservoir Cap: Twist, Plastic, 1 Pack

from

$9.49
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.54209)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

from

$27.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Sankei Switches – Sankei Switches Radiator Cap (Part No.G1010324668SAK)

Sankei Switches Radiator Cap

from

$10.30
The Sankei Switches radiator cap range has been developed to operate within original equipment manufacturer’s specifications. A faulty radiator cap can cause your car to boil-over at a lower temperature. Test or replace the coolant cap when servicing the cooling system.

Product Features:
  • Meets Original Equipment specifications.
  • Made from premium materials.
  • Designed to function on open cooling systems and overflow reservoir type systems.
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Motorcraft – ENG COOLANT RES CAP (Part No.RS-76)

ENG COOLANT RES CAP

from

$22.99
ENG COOLANT RES CAP

Motorcraft – Motorcraft Expansion Tank Cap (Part No.G1040201239MTR)

Motorcraft Expansion Tank Cap

from

$22.16
High-quality caps for Ford and Lincoln vehicles.

Product Features:
  • Standard and safety vent radiator pressure caps available
  • Extensive coverage for most cars and trucks, as well as farm and construction equipment
  • Swivel-seal radiator caps are designed to provide increased durability and can be removed without damage to the rubber atmospheric seal
  • Zinc-plated to resist corrosion and rust
  • Pressure valve springs are made of stainless steel to maintain calibrated pressure throughout the service life
  • Rubber pressure valve gasket resists high temperatures and deterioration from coolant and additives
  • Pressure and vacuum relief features help extend radiator and hose life
  • Prevent accidental cap removal with positive low-pressure stop feature
See More

Dorman – Help – Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack (Part No.54214)

Engine Coolant Reservoir Cap: Flip Top, Plastic, 1 Pack

from

$20.99
Cracked or lost the original engine coolant reservoir cap? Replace it seamlessly and effectively with this precisely engineered, direct replacement cap.

Product Features:
  • Direct replacement – this engine coolant reservoir cap directly replaces a cracked or lost original cap
  • Application specific – made to match dimensions of reservoir cap on only certain vehicle years, makes and models
  • Seamless fit – reverse-engineered from the original equipment to fit perfectly
  • Excellent value – a quick, easy replacement that’s less expensive than going back to the dealership
See More

Motorcraft – Original Equipment Radiator Cap (Part No.G1010415176MTR)

Original Equipment Radiator Cap

from

$10.70
The Motorcraft Original Equipment Radiator Cap is an OES replacement component that provides the same performance, durability, and service life as your factory original equipment.

Product Features:
  • Standard and safety vent radiator pressure caps available
  • Extensive coverage for most cars and trucks, as well as farm and construction equipment
  • Swivel-seal radiator caps are designed to provide increased durability and can be removed without damage to the rubber atmospheric seal
  • Zinc-plated to resist corrosion and rust
  • Pressure valve springs are made of stainless steel to maintain calibrated pressure throughout the service life
  • Rubber pressure valve gasket resists high temperatures and deterioration from coolant and additives
  • Pressure and vacuum relief features help extend radiator and hose life
  • Prevent accidental cap removal with positive low-pressure stop feature
See More