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2014 Ram H100 Van Automatic Transmission Oil Cooler Replacement Guide

Keep your 2014 Ram H100 Van's transmission running cool and prevent expensive damage.

3 minutes to read 2014-2014 Ram H100 Van
Difficulty
2/5
Est. Time
2 hrs
DIY Doable?
✅ Yes
Shop Labor
$180-$350
Used OEM Price
$40-$80
⚠️ Drivable, but... — You can drive for short distances, but you risk severe and expensive transmission damage if the fluid level gets too low or the transmission overheats.
Key Takeaways
  • A failing transmission cooler will leak red fluid, cause overheating, and lead to poor shifting.
  • Do not drive if you have a significant transmission fluid leak, as it can quickly destroy the transmission.
  • For the 2014 Ram H100, aftermarket brands like Hayden and Four Seasons are reliable and affordable replacement options.
  • No specific recalls or TSBs exist for this part in the US, as the H100 van was not sold in this market.
The automatic transmission oil cooler in your Ram H100 Van works like a small radiator for your transmission. It takes hot transmission fluid, cools it down by passing it through fins exposed to airflow, and sends it back to the transmission. For a work van like the H100, which may carry heavy loads, keeping the transmission fluid cool is critical. Hot fluid breaks down quickly and can lead to serious transmission failure.

Symptoms of a Failing Transmission Cooler

A bad transmission cooler can destroy your transmission if you don't catch it early. Heat is the number one killer of automatic transmissions. Look for these warning signs:

  • Leaking Red Fluid: This is the most obvious sign. You might see puddles of reddish or brownish fluid under the front of your van. These leaks often come from the cooler itself or the lines connected to it.
  • Transmission Overheating Warning: Many vehicles have a dashboard light to warn you if the transmission is getting too hot. If you see this light, pull over as soon as it's safe.
  • Burnt Smell: If the transmission fluid gets too hot, it can start to burn. You might notice a sweet, burning smell. This is a sign that the fluid is breaking down and not protecting your transmission properly.
  • Poor Shifting Performance: When transmission fluid overheats, it loses its ability to lubricate and create pressure correctly. This can cause the transmission to shift roughly, slip between gears, or delay shifting.

Coolant Contamination

On some vehicles, the transmission cooler is built into the main engine radiator. If this type of cooler fails internally, transmission fluid and engine coolant can mix. This creates a pink, milky fluid that looks like a strawberry milkshake. This is a catastrophic failure that can destroy both the engine and transmission very quickly.

Choosing the Right Aftermarket Cooler

For the 2014 Ram H100 Van, aftermarket coolers are a practical and affordable option. Since this van was not widely sold in the US, OEM parts can be difficult to find and expensive. Aftermarket brands offer reliable quality, often meeting or exceeding original specifications.

Brand Options:

  • Hayden: Hayden is a well-respected brand that specializes in automotive cooling systems. They are known for making durable and efficient transmission coolers, and many professional mechanics trust their products for heavy-duty use. Reviews often praise their quality and value.
  • Four Seasons: Four Seasons is a large, reputable manufacturer of a wide range of aftermarket parts, including heating and cooling components. Their parts are designed to be reliable, direct-fit replacements for the original equipment. While some reviews for their other products can be mixed, they are generally considered a solid, budget-friendly choice for standard repairs.

Pro Tip: When replacing your cooler, it's also a good idea to inspect the transmission cooler lines for any cracks, rust, or wetness, as these are also common leak points.

Cost of a New Aftermarket Transmission Cooler

Below is a general cost estimate for replacing the automatic transmission oil cooler on a 2014 Ram H100 Van. Prices can vary based on your location and choice of mechanic.

Part Type Estimated Cost
New Aftermarket Cooler $52 - $96
Shop Labor $180 - $350
Total Estimated Cost $232 - $446

Frequently Asked Questions (FAQ)

Can I install a new transmission cooler myself?

Yes, if you have moderate mechanical skills and the right tools, this is a DIY-friendly job. The process involves removing the front grille, disconnecting the old cooler lines, unbolting the old cooler, and installing the new one. You will need a special tool to disconnect the lines and a pan to catch spilling fluid. Always make sure to top off the transmission fluid to the correct level after installation.

Are there any recalls for the 2014 Ram H100 Van transmission cooler?

No specific recalls or Technical Service Bulletins (TSBs) related to the automatic transmission oil cooler were found for the 2014 Ram H100 Van in the North American market. This is likely because the vehicle was not officially sold in the United States, so it is not listed in the NHTSA database.

Is an aftermarket cooler as good as the original part?

Yes, reputable aftermarket brands like Hayden and Four Seasons produce high-quality coolers that are designed to perform as well as, or sometimes even better than, the original part. Hayden, in particular, is a specialist in cooling and is often considered an upgrade over stock coolers.

What happens if I don't replace a leaking cooler?

Ignoring a leaking cooler will lead to low transmission fluid levels. This will cause the transmission to overheat, leading to internal damage, poor shifting, and eventually, complete transmission failure. A replacement transmission can cost thousands of dollars, so it is much cheaper to fix a bad cooler as soon as you notice a problem.

Technical Specifications

The 2014 Ram H100 Van uses an external, air-to-fluid automatic transmission oil cooler. Available aftermarket brands include Four Seasons and Hayden. Due to the vehicle's primary market being outside the US, specific OEM part numbers are not readily available.

Wrenchy
Article researched & written by
Go-Parts' AI research assistant. Every article is backed by live web research, verified OEM data, and real technician knowledge — so you get accurate, up-to-date information you can trust.
Meet Wrenchy → Updated Jul 21, 2026

The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.

Year Coverage
This article covers the Automatic Transmission Oil Cooler for:
  • Ram H100 Van: 2014
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