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Hummer H3 Oil Cooler Line

3 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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Inlet Right Auto Transmission Oil Cooler Pressure Line for Hummer H3 2006-2010 H3T 2009-2010Inlet Right Auto Transmission Oil Cooler Pressure Line for Hummer H3 2006-2010 H3T 2009-2010
A-Premium®Part # APOCL443
Inlet Right Auto Transmission Oil Cooler Pressure Line for Hummer H3 2006-2010 H3T 2009-2010
4.630 Reviews
$79.99
Low stock: Only 2 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2006 - 2010 Hummer H3, 2009 - 2010 Hummer H3T
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer H3
Item LocatedUnited States
Installation PositionInlet Passenger
ConditionNew
item #10156G6W
Note
This item fits the model with Automatic Transmission.
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Engine Oil Fill Tube for Chevy Tahoe Silverado 1500 GMC Yukon Buick Cadillac
A-Premium®Part # APOCL349
Engine Oil Fill Tube for Chevy Tahoe Silverado 1500 GMC Yukon Buick Cadillac
4.630 Reviews
$26.99
Edit ZIP code
3-year warranty
90 days free return
Fits 2004 - 2007 Buick Rainier, 2002 - 2006 Cadillac Escalade, 2003 - 2006 Cadillac Escalade ESV, 2002 - 2006 Cadillac Escalade EXT, 2007 - 2008 Chevrolet Avalanche, 2003 - 2006 Chevrolet Avalanche 1500, 2003 - 2008 Chevrolet Silverado 1500, 2007 - 2007 Chevrolet Silverado 1500 Classic, 2003 - 2003 Chevrolet Silverado 1500 HD, 2005 - 2006 Chevrolet Silverado 1500 HD, 2007 - 2007 Chevrolet Silverado 1500 HD Classic, 2003 - 2004 Chevrolet Silverado 2500, 2003 - 2008 Chevrolet Silverado 2500 HD, 2007 - 2007 Chevrolet Silverado 2500 HD Classic, 2003 - 2006 Chevrolet Silverado 3500, 2007 - 2007 Chevrolet Silverado 3500 Classic, 2007 - 2008 Chevrolet Silverado 3500 HD, 2003 - 2006 Chevrolet SSR, 2003 - 2008 Chevrolet Suburban 1500, 2003 - 2008 Chevrolet Suburban 2500
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer H3
Item LocatedUnited States
Quantity1
MaterialPlastic
ColorBlack
item #10019NUT
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Outlet Automatic Trans. Oil Cooler Line for Hummer H3 2006-2010 L5 3.5L L5 3.7L
A-Premium®Part # APOCL466
Outlet Automatic Trans. Oil Cooler Line for Hummer H3 2006-2010 L5 3.5L L5 3.7L
4.630 Reviews
$110.99
Low stock: Only 1 left
Edit ZIP code
3-year warranty
90 days free return
Fits 2007 - 2010 Hummer H3, 2006 - 2006 Hummer H3
Add Trim and Engine info to ensure a guaranteed fit
Vehicle: Hummer H3
Item LocatedUnited States
QuantityOne Set
ConditionNew
item #10154LW3
Note
【Note-1】This item fits with Automatic Transmission Only, not fit Manual Transmission.
【Note-2】It not fit V8 5.3L.
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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.

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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.

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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