How to Buy a Good Quality Oil Cooler Hose (Automatic Transmission)

If you’re seeing black stains beneath your vehicle when it’s parked, that oil slick could be caused by a leak in your oil cooler hose. The oil cooler acts as a radiator by cooling the engine oil after it has circulated throughout the engine and heated up. The hose is the method for passing oil through to the oil cooler, and is made from a rubber that will lose necessary cohesion after time.

The lifecycle of an oil cooler hose may be shorter than some other rubber hoses simply because it’s constantly in contact with an incredibly hot substance, and then cools down rapidly when no hot oil is passing through it. Eventually, the part will harden and begin to crack, and then you’ll start to see oil sweat out through the rubber and leaks will occur.

Here are a few pointers that will guide you to the best choice in oil cooler hoses:

  • Type of oil hose: There are two types of oil cooler hoses: transmission oil cooler lines and engine oil cooler lines.

  • Transmission oil hose: Transmission oil cooler lines go through the passenger area of a vehicle and are very short – only about 6” long. Transmission fluid will leak red, so that’s a strong indicator that something is wrong with this particular cooler line.

  • Engine oil hose: Engine oil cooler lines go along the driver’s side of the vehicle and the fluid that comes from them will be either a dark brown or black in color. These cooler hoses are also very short; only about 4-5” in length.

  • Correct fit: You have to find just the right oil cooler hose to fit your vehicle. Since components are packed so tightly, it’s critical that you make sure the hose is the correct one for your particular car; keeping in mind not only length but also diameter and angle.

  • OEM specifications: The best oil cooler hoses are built to OEM standards. While an aftermarket part is acceptable, OEM parts are guaranteed to fit and work accurately. Check the part number on your current oil cooler hose and reorder that exact type as they vary by model year, make, and engine size.

It’s always important to double-check the number on the old oil hose against the new part before you install it. Keeping your oil cooler hose in good working condition will ensure your car runs well.

YourMechanic supplies top-quality oil cooler hoses to our certified mobile technicians. We can also install an oil cooler hose that you've purchased. Click here to get a quote and more information on oil cooler hose replacement.


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Recent Oil Cooler Lines Replacement reviews

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Walter

46 years of experience
221 reviews
Walter
46 years of experience
Lexus RX350 - Oil Cooler Lines - Broken Arrow, Oklahoma
I will not use anyone else. Walter has been out here a couple times...he will be the only one to work on my cars. Totally recommend
Toyota Sienna - Oil Cooler Lines - Sapulpa, Oklahoma
Arrived on time, informed and had great knowledge.

Dameron

17 years of experience
97 reviews
Dameron
17 years of experience
Chevrolet Silverado 2500 - Oil Cooler Lines - Indianapolis, Indiana
he changed my oil cooler line, this man is good. I would recommend Dameron to anyone. hands down him and his family are one of the nicest people around and job was done right. People that are rude you do realize that he comes to you to fix the problem show some respect. Dameron is now my go to mechanic from here on out. thanx buddy
Pontiac Grand Prix - Oil Cooler Lines Replacement - Indianapolis, Indiana
I learned some new things overall a good experience

Juan

12 years of experience
38 reviews
Juan
12 years of experience
Mercedes-Benz CLK320 - Oil Cooler Lines - Vallejo, California
This is my second time receiving outstanding customer service and car repair from Juan. He is number one and I highly recommend his expertise.

Patrick

33 years of experience
1269 reviews
Patrick
33 years of experience
Lexus RX350 - Oil Cooler Lines - Dripping Springs, Texas
Patrick is always on-time. He is professional and he does a great job. He has serviced several of my vehicles. I definitely recommend him and Your Mechanic. The pricing is very fair.

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