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Mercury Mariner Oil Cooler Line

6 items

Keep your engine cool with A-Premium's reliable oil cooler lines. Trust our high-quality parts for the best performance and durability.

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Outlet Automatic Transmission Oil Cooler Line for Ford Escape Mercury MarinerOutlet Automatic Transmission Oil Cooler Line for Ford Escape Mercury Mariner
A-Premium®Part # APOCL581
Outlet Automatic Transmission Oil Cooler Line for Ford Escape Mercury Mariner
4.631 Reviews
$58.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 - 2012 Ford Escape, 2009 - 2009 Ford Escape, 2010 - 2011 Mercury Mariner, 2010 - 2012 Ford Escape, 2009 - 2011 Mercury Mariner, 2009 - 2009 Mercury Mariner, 2009 - 2010 Ford Escape
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Installation PositionOutlet
ConditionNew
item #1016V8GW
Note
This item fits the model with Automatic Transmission, not fits Manual Transmission.
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Auto Transmission Oil Cooler Hose Assembly for Ford Escape 2009-2012 Mercury Mariner 2009-2011
A-Premium®Part # APOCL439
Auto Transmission Oil Cooler Hose Assembly for Ford Escape 2009-2012 Mercury Mariner 2009-2011
4.631 Reviews
$56.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 - 2012 Ford Escape, 2009 - 2011 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Installation PositionInlet and Outlet
ConditionNew
item #10156EPW
Note
This item fits Automatic Transmission, Not Fit Manual Transmission.
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Inlet Transmission Oil Cooler Line for Ford Escape 2009-2012 Mercury Mariner 2009-2011
A-Premium®Part # APOCL582
Inlet Transmission Oil Cooler Line for Ford Escape 2009-2012 Mercury Mariner 2009-2011
4.631 Reviews
$63.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2009 - 2010 Ford Escape, 2009 - 2012 Ford Escape, 2010 - 2012 Ford Escape, 2009 - 2009 Ford Escape, 2009 - 2009 Mercury Mariner, 2010 - 2011 Mercury Mariner, 2009 - 2011 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Installation PositionInlet
ConditionNew
item #1017773K
Note
【Note-1】 Location: Inlet
【Note-2】 This item fits the model with 6-speed Automatic Transmission, not fits Manual Transmission.
【Note-3】 This item fits the model without Accessory Flat Tow Cooling.
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Cooling Transmission Oil Cooler Line - Pressure Line for Ford Escape Mercury Mariner 2008
A-Premium®Part # APOCL402
Cooling Transmission Oil Cooler Line - Pressure Line for Ford Escape Mercury Mariner 2008
4.631 Reviews
$39.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2008 - 2008 Mercury Mariner, 2008 - 2008 Ford Escape
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Quantity1
Part interchange
5802059, 8L8Z7890A
ConditionNew
item #10183YDY
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Inlet Auto Transmission Oil Cooler Hose Assembly for Ford Escape Mercury Mariner 2008
A-Premium®Part # APOCL400
Inlet Auto Transmission Oil Cooler Hose Assembly for Ford Escape Mercury Mariner 2008
4.631 Reviews
$53.99
Low stock: Only 2 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2008 - 2008 Ford Escape, 2008 - 2008 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Installation PositionInlet
ColorSilver
ConditionNew
item #10156A4U
Note
This item comes without Bypass Valve, With Automatic Transmission.
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Oil Cooler Line for Ford Escape Mercury Mariner 2008 L4 2.3L V6 3.0L
A-Premium®Part # APOCL403
Oil Cooler Line for Ford Escape Mercury Mariner 2008 L4 2.3L V6 3.0L
4.631 Reviews
$43.99
Low stock: Only 5 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2008 - 2008 Ford Escape, 2008 - 2008 Mercury Mariner
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Mercury Mariner
Item LocatedUnited States
Quantity1
Part interchange
5802060, 8L8Z7890C
ConditionNew
item #10151ZXV
Show less

What is an oil cooler line for?

 

Oil cooler lines are designed to carry oil from the engine to the oil cooler and back. The oil cooler is an important component in the engine cooling system, as it helps regulate the engine oil temperature, improving engine performance and extending engine life.

 

What causes an engine oil cooler line to leak?

 

Engine oil cooler line leaks can be caused by:

 

  • Age and wear: Over time, oil cooler lines can become worn or brittle due to age, heat, and exposure to the elements. This can cause the lines to crack or develop leaks.
  • Corrosion: If the oil cooler lines are made of metal, they can corrode over time due to exposure to moisture or other corrosive substances. This can cause the lines to weaken or develop leaks.
  • Improper installation: If the oil cooler lines are not properly installed, they may become misaligned or damaged, which can cause leaks.
  • High pressure: If the engine oil pressure is too high, it can put extra stress on the oil cooler lines, causing them to fail or develop leaks.
  • Impact damage: If the oil cooler lines are located in a vulnerable position, they may be damaged by rocks, debris, or other objects, which can cause leaks.
  • If a leak is detected, it should be repaired promptly to avoid engine damage and reduced performance.

 

How to replace an oil cooler line?

 

To replace an oil cooler line, you need to first drain the engine oil, then locate and remove the damaged line. Then install the new line with new gaskets or O-rings if needed. After that, refill the engine oil and check for leaks to test drive the vehicle. Specific steps may vary depending on the vehicle, so consulting the owner's manual or a mechanic for guidance may be more helpful.

Related Blogs

What Are Oil Cooler Lines and Everything You Need to Know

The oil cooler lines are a critical component of the engine's cooling system. They play a vital role in regulating the temperature of the engine oil, which is essential for the proper operation and longevity of the engine.

Jul 21, 2026

A Comprehensive Guide to Replacing the Engine Oil Cooler Line

A-Premium oil cooler line helps maintain optimal engine oil temperature, ensuring effective lubrication and cooling. Recognizing the importance of timely oil cooler line replacement is the key to preserving your engine's long-term health and performance.

Jul 21, 2026