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If you drive a Mercedes-Benz ML-Class and depend on it for daily commuting or heavy-duty use, keeping engine oil temperatures under control matters for longevity and reliability. The right Mercedes-Benz ML-Class oil cooler helps reduce oil operating temperatures, protect internal components, and maintain consistent performance under load. This guide highlights seven shortlisted oil coolers that meet fitment and performance criteria for the ML-Class, and explains the core factors we evaluated: mounting compatibility, cooling capacity, material durability, and ease of service. Read on to see which features to prioritize before you choose an option for your vehicle.
Looking for other parts? See all Mercedes-Benz ML-Class parts & accessories.
Top Picks at a Glance
| Best Reviewed A top-rated pick with lots of positive feedback | BLCYANUE Engine Oil Cooler Filter Housing for Mercedes-Benz (OEM 2701800810) |  |
| Most Popular A crowd favorite that many people choose with confidence | Dorman 918-110 Engine Oil Cooler (Replacement, Select Ford Models) |  |
| Best Quality Built to a higher standard if you want something more solid | Mishimoto Replacement Oil Cooler (MMOC-F2D-08) for Ford 6.4L Powerstroke |  |
| Best Budget The cheapest option that still gets the job done reliably | NewYall 2.0L Engine Oil Filter Housing with Oil Cooler for Mercedes-Benz |  |
| Most Sold A high-volume bestseller chosen again and again | Dorman Engine Oil Cooler (918-578) |  |
| Best Value for Money The sweet spot between price and what you get | INFINAUTO Engine Oil Cooler with O‑Ring and Bolt (Front) |  |
| Best Overall The best all-around choice for most situations | EVIL ENERGY 30-Row Stacked-Plate Oil Cooler |  |
1. BLCYANUE Engine Oil Cooler Filter Housing for Mercedes-Benz (OEM 2701800810)
| Compatible with Vehicle Type | Mercedes-Benz A35 AMG, A220, GLB250, GLA45 AMG, CLA250, GLA250 |
|---|---|
| Thread Size | M16 x 1.5 |
| Product Grade | Performance Part |
| OEM Equivalent Part Number | 2701800810 |
This engine oil cooler filter housing replaces the factory housing and integrates the oil cooler and filter mounting into a single vehicle-specific unit. It is used where the original housing has failed, leaking, or suffered thermal damage and is typically fitted during an oil cooler repair or engine service. The housing is advertised as constructed from enhanced materials with improved wear and temperature resistance and is tested before shipping. In practice it restores the engine's ability to circulate oil through the cooler and filter assembly, which helps control oil temperature and protect internal components under higher load or spirited driving. The listing includes OEM-equivalent part numbers for direct interchange with Mercedes-Benz systems. Limitations include the need for correct fitment to the specified Mercedes models and professional installation to avoid leaks or incorrect torque; this is a replacement part rather than an upgraded performance cooler, so cooling capacity matches factory expectations rather than increasing cooling margin for heavy track use.
Best for: Performance-oriented Mercedes owners seeking a high-quality, factory-equivalent replacement housing to restore proper oil cooling and filtration during spirited driving and regular service.
Less Ideal for: Drivers wanting an aftermarket upgrade that increases cooling capacity for track use or those who prefer to avoid professional installation and detailed fitment checks.
- Vehicle-specific fit that matches Mercedes-Benz part interchange numbers for direct replacement
- Built from materials rated for high temperature and wear resistance to reduce failure risk
- Pre-tested before shipping to reduce chances of receiving a defective unit
- Integrates oil cooler and filter housing functions for straightforward replacement
- Not a performance-upgrade cooler so it does not increase oil cooling capacity beyond factory levels
- Requires correct installation and torqueing to prevent leaks and ensure seal longevity
Verdict A high-quality, vehicle-specific factory-replacement housing that restores proper oil cooling on compatible Mercedes-Benz models but does not increase cooling beyond stock.
2. Dorman 918-110 Engine Oil Cooler (Replacement, Select Ford Models)
| Compatible with Vehicle Type | Ford |
|---|---|
| Fuel Type | Diesel, Gasoline |
| Product Grade | Replacement Part |
| Material Type | Aluminum |
This Dorman engine oil cooler is a direct replacement designed to restore proper oil-to-coolant cooling when a factory cooler has failed. It is typically used during maintenance or repair when oil leaks into the cooling system or oil temperatures run high; the unit installs in place of the original cooler and connects to existing oil and coolant lines. Notable features include machined aluminum construction and factory-style fit intended to match original dimensions for a straightforward swap on compatible vehicles. In real-world use the cooler helps prevent oil contamination of the coolant and stabilizes oil temperature under towing or heavy-load conditions. Reported benefits include reliable fit and a durable build that stands up to routine driving. Limitations to consider are fitment specificity and occasional reports of missing hardware or minor leaks after installation, so verify included fasteners and inspect connections during fit-up. Expect to follow vehicle-specific procedures and torque specs when replacing the cooler to avoid installation-related leaks.
Best for: Convenience-driven buyers who prioritize an easy, like-for-like repair that gets their vehicle back on the road quickly without custom modifications.
Less Ideal for: Owners looking for a cooler specifically for Mercedes-Benz ML-Class models or who need a universal fit across multiple makes should look for a part that lists Mercedes-Benz ML-Class fitment.
- Direct replacement design intended to match factory fit and function for specified Ford applications
- Aluminum construction with machined exterior for corrosion resistance and heat transfer
- Designed to address oil contamination of the coolant and stabilize oil temperature under load
- Backed by a manufacturer with long automotive parts experience and testing
- Compatibility is limited to specific Ford models and years rather than broad vehicle coverage
- Some buyers report missing mounting hardware or minor post-installation leaks requiring re-torque or additional seal parts
Verdict A practical, factory-style replacement for specified Ford applications that simplifies repair but is not suitable if you need a cooler for Mercedes-Benz ML-Class vehicles.
3. Mishimoto Replacement Oil Cooler (MMOC-F2D-08) for Ford 6.4L Powerstroke
| Manufacturer Part Number | MMOC-F2D-08 |
|---|---|
| OEM Part Number | 8C3Z-6A642-A |
| Compatible Engines | Ford 6.4L Powerstroke 2008-2010 |
| Exterior | Painted |
This Mishimoto unit is a direct-fit replacement oil cooler built to restore proper oil-to-coolant heat exchange and prevent elevated oil temperatures that threaten engine longevity. It is typically used when a factory oil cooler has clogged or failed and needs replacement; the cooler arrives with seals and O-rings for a leak-resistant installation and is engineered to OEM-style fitment. The precision liquid-to-liquid design maintains consistent oil temperature under load, which helps protect bearings, turbochargers, and other hot-side components during towing or sustained highway driving. Materials and construction are targeted at durability and reliable cooling performance. Installation can be involved and the product notes professional installation is recommended, so expect shop time and associated labor. While designed to match factory function, this unit is specified for Ford 6.4L Powerstroke 2008–2010 applications, so compatibility is limited and it will not be a drop-in for unrelated makes or models.
Best for: Performance-oriented buyers who prioritize factory-quality cooling parts and want a high-quality replacement to restore reliable oil temperatures under heavy loads.
Less Ideal for: Owners seeking a direct replacement for any Mercedes-Benz ML-Class model should look for parts explicitly made for that vehicle instead of this Ford-specific cooler.
- Direct-fit replacement engineered to match factory cooling performance
- Liquid-to-liquid design provides consistent oil temperature under heavy use
- Includes seals and O-rings for a leak-resistant installation
- Built by a specialist cooling brand with a focus on durability and quality
- Specified for Ford 6.4L Powerstroke 2008–2010 so not compatible with Mercedes ML vehicles
- Professional installation is recommended which increases total cost of replacement
- No vehicle-specific instructions for Mercedes-Benz ML-Class provided
Verdict Excellent, factory-style oil cooler for Ford 6.4L Powerstroke duty but not suitable for Mercedes-Benz ML-Class applications.
4. NewYall 2.0L Engine Oil Filter Housing with Oil Cooler for Mercedes-Benz
| Brand Name | NewYall |
|---|---|
| Compatible with Vehicle Type | Car |
| Product Grade | Performance Part |
| Material Type | Aluminum |
This NewYall oil filter housing replaces the factory housing and includes the oil cooler interface required on many 2.0L Mercedes-Benz engines. It is used when the original housing leaks, the cooler is damaged, or during an engine service that requires a new housing assembly. The unit is aluminum, offered as a single kit, and appears to match factory mounting points for the covered model years. Buyers will appreciate that it is vehicle-specific fitment for Mercedes-Benz A220, A35 AMG, CLA250, CLA35 AMG, GLA250 and GLB250 2.0L engines, which simplifies installation and reduces modification. Practical benefits include restoring proper oil cooling and filtration paths and avoiding repeated trips to the dealer. Limitations are that fitment is restricted to 2.0L Mercedes models listed and the listing does not include extensive installation hardware detail, so confirm gasket and sensor compatibility before purchase. Expect a typical DIY or shop replacement procedure rather than a performance upgrade.
Best for: Practical optimizers who prioritize cost-effective, vehicle-specific replacements to get a Mercedes-Benz back on the road without paying dealer prices.
Less Ideal for: Buyers seeking a performance-focused upgrade or universal fit component should look elsewhere as this is intended as a factory-style replacement for specific 2.0L Mercedes models.
- Vehicle-specific fit for several 2.0L Mercedes-Benz models which eases installation
- Aluminum construction that should offer corrosion resistance and heat dissipation
- Includes the oil cooler interface so you can replace a leaking or damaged housing in one unit
- Sold as a complete single kit which reduces the need to source separate parts
- Compatibility limited to the listed 2.0L Mercedes models and years
- Product listing does not clearly state which gaskets or sensors are included, requiring buyer verification
Verdict A budget-conscious, vehicle-specific replacement that restores the oil filter housing and cooler function on covered Mercedes 2.0L models without dealer pricing.
5. Dorman Engine Oil Cooler (918-578)
| Manufacturer | Dorman Products |
|---|---|
| Item model number | 918-578 |
| OEM Part Number | 21300JG31A; 21300JG31C; 21300JG32A; 21300JG33A; 21300JG35A; 21300JG36A |
This Dorman engine oil cooler is a direct-replacement part intended to match the fit and function of a factory cooler on compatible vehicles. It is typically used when a damaged or corroded cooler causes oil overheating or leaks; install replaces the failed unit to restore normal oil cooling. The unit is engineered to factory-style specifications and marketed for reliability, so installation generally follows the same mounting points and lines as the original. Practical benefits include restoring proper oil temperature control to protect the engine and avoiding the expense of more extensive repairs. Limitations are that it is listed for specific Nissan Rogue Select model years, so fitment for other vehicles requires verification, and buyers should confirm trim compatibility before ordering. Expect the part to perform as a replacement rather than an upgraded performance cooler.
Best for: Risk-averse mainstream buyers who prioritize a straightforward, factory-quality replacement that restores original function without experimenting with performance upgrades.
Less Ideal for: Buyers seeking a higher-capacity or performance oil cooler for heavy towing, track use, or modified engines should consider purpose-built performance units instead.
- Factory-style direct replacement fit and function for specified applications
- Designed to restore engine oil temperature control after cooler failure
- Manufactured to controlled specifications aimed at reliable service
- Backed by a long-established aftermarket brand with US-based product support
- Compatibility is limited to specified vehicle applications and requires checking trim fitment
- Not marketed as an upgraded or performance cooler compared with aftermarket performance units
Verdict Solid factory-style replacement for restoring oil cooling on compatible vehicles, but confirm fitment and do not expect performance gains.
6. INFINAUTO Engine Oil Cooler with O‑Ring and Bolt (Front)
| Material | Aluminum Alloy |
|---|---|
| Cooling Type | Water-Cooled |
| Position | Front |
| Manufacturer Part Number | IFN240218a000032 |
This aluminum alloy engine oil cooler is a direct replacement-style unit that transfers heat from engine oil to coolant to help lower oil temperature and reduce engine wear. It is supplied with an O-ring seal and bolt for installation and is intended to replace the factory cooler on supported vehicles. Typical use involves removing the old cooler, draining oil, cleaning the gasket surface, and fitting the new unit using the included hardware. The cooler’s aluminum construction improves heat dissipation and resists corrosion compared with plastic alternatives, and the water-cooled design helps stabilize oil temperature under load. Important limitations are fitment and compatibility — this part lists fitment for older Ford and Lincoln models and an OE part number rather than Mercedes‑Benz ML‑Class, so verify vehicle compatibility before buying for any Mercedes application. The package is a single cooler without extra hoses or extensive installation hardware, which keeps the price low but may require reuse of some factory parts during installation.
Best for: Practical optimizers looking for a budget-friendly replacement cooler that restores oil temperature control without paying for a premium brand or full accessory kit.
Less Ideal for: Buyers seeking a guaranteed fit for Mercedes‑Benz ML‑Class or a complete plug-and-play kit that includes all hoses and fittings should look for a model specified for that vehicle and with a full installation kit.
- Aluminum alloy core for improved heat transfer and corrosion resistance compared with basic alternatives
- Includes O-ring seal and bolt to simplify basic installation
- Designed for oil-to-water cooling which helps maintain more stable oil temperatures under load
- Documented fitment targets older Ford and Lincoln models rather than Mercedes‑Benz ML‑Class
- Package contains only the cooler and one bolt so additional gaskets or hoses may be needed for a full replacement
- No explicit vehicle-specific installation instructions or comprehensive hardware kit included
Verdict A cost-conscious aluminum oil cooler that improves oil cooling but check fitment carefully since it targets older Ford and Lincoln models rather than Mercedes‑Benz ML‑Class.
7. EVIL ENERGY 30-Row Stacked-Plate Oil Cooler
| Oil capacity | 0.74 L |
|---|---|
| Test pressure | 116 PSI |
| Burst pressure | 232 PSI |
| Material | Aluminum alloy |
This EVIL ENERGY 30-row stacked-plate oil cooler is a compact aluminum unit meant to reduce oil temperatures for transmissions, engines, or differentials. It installs where airflow is available and uses stacked plates to maximize thermal transfer in a small footprint. Typical use is as an aftermarket upgrade for vehicles that run hotter than factory spec under towing, steep grades, or spirited driving; installers can mount it with brackets and connect using AN-style fittings or adapters. Practical benefits include a high test and burst pressure rating that supports durability and the cooler’s small size, which eases packaging in tight front-end locations on ML-Class vehicles. Limitations are that it is a generic universal unit so you may need adapters, custom brackets, or AN fittings for a direct connection to Mercedes-Benz ML plumbing, and some buyers report fitting or fitting-thread failures when installation or matching fittings is poor. Expect to plan brackets and proper fittings and to confirm clearances before buying.
Best for: Balanced all-round buyers who want a practical, performance-minded oil cooling upgrade for a Mercedes-Benz ML-Class to improve oil temps during towing or spirited driving.
Less Ideal for: Owners seeking a direct-fit, vehicle-specific cooler or those who want a plug-and-play OEM-style replacement without any fabrication or adapter work should consider a model made specifically for the ML-Class.
- High cooling capacity from 30 stacked plates for lower oil temperatures
- Aluminum construction with high test and burst pressure for durability
- Compact footprint that fits in tight front-end locations
- Includes installation holes and instructions to simplify mounting and mockups
- Universal design requires adapters, brackets, or AN fittings for direct fit to Mercedes-Benz ML systems
- Some users report fitting or assembly failures if fittings are not matched or installed correctly
Verdict A compact, high-capacity stacked-plate cooler that delivers solid temperature control for ML-Class upgrades but requires careful fitting and correct adapters for a clean installation.
Choosing the Right Mercedes-Benz ML-Class Oil Cooler: Key Factors to Consider
Fitment and Mounting Compatibility
Correct fitment is essential because mounting points, bracket geometry, and hose connections vary by model year. Ensuring the cooler lines up with factory mounting locations reduces installation time and avoids modifications that can compromise durability.
A cooler designed for the ML-Class will match hose diameters and connector types, minimizing the need for adapters. Poor fitment can introduce stress on hoses and fittings, increasing the risk of leaks and premature failure, so verify compatibility with your model year and engine configuration before purchasing.
Cooling Capacity and Core Design
Cooling capacity determines how much heat the cooler can remove from the oil during hard driving, towing, or stop‑and‑go traffic. Core design, including surface area, fin density, and internal flow passages, influences how efficiently heat transfers from oil to ambient air.
Look for a balance between large surface area and flow restriction; an overly restrictive core can reduce oil flow and impair lubrication. For heavier duty use, a core with greater surface area or multi-pass flow often delivers better temperature control without sacrificing flow rate.
Materials and Corrosion Resistance
Materials affect both thermal performance and longevity. Aluminum cores are common for their light weight and good thermal conductivity, while stainless fittings and coated surfaces resist corrosion from road salts and moisture.
Durable finishes, proper brazing or welding, and corrosion-resistant end tanks extend service life. Consider the environment you drive in: frequent winter driving or salty coastal roads increases the importance of corrosion protection.
Hose and Line Compatibility
Oil cooler performance depends on secure, correctly sized lines that maintain adequate flow and pressure. Hose routing should avoid tight bends and rubbing points to prevent wear and potential leaks.
Check whether the cooler includes line fittings or requires separate oil cooler lines or adapters. Matching hose diameter and pressure rating to the vehicle’s oil system reduces the chance of blowouts and ensures consistent circulation, which is especially important for towing or heavy-load conditions.
Serviceability and Replacement Parts
Serviceability matters because oil coolers can eventually clog, leak, or suffer mechanical damage. Units with replaceable cores or available line kits simplify repairs and can cut long‑term maintenance costs.
Availability of replacement gaskets, O rings, and adapter fittings is also important. Consider whether the design allows reasonable access for routine checks and whether common failure points are easy to inspect and service without removing multiple components.
Installation Complexity and Required Tools
Installation complexity influences who should perform the work and how long it will take. Some coolers are direct-fit and require basic hand tools, while others demand line replacement, adapter installation, or temporary removal of surrounding components.
Understand whether you will need special tools, such as flare nut wrenches or line disconnect tools, and whether the job requires lifting the vehicle or removing the bumper. Anticipating installation steps helps plan for professional installation if needed and avoids surprises during the swap.
FAQ
How do I know if my Mercedes‑Benz ML‑Class needs a new oil cooler?
Common signs include higher than normal oil temperatures, visible oil leaks around the cooler or lines, and contaminated coolant if the unit is an oil‑to‑coolant type. You may also notice poor engine performance or oil pressure fluctuations during heavy use. If you suspect a problem, inspect visible lines and connections and address leaks promptly to prevent engine damage.
Can I install an oil cooler myself on an ML‑Class?
Installation difficulty varies by design and your mechanical experience. Direct‑fit units that match factory mounting points are usually within the scope of a competent DIYer with basic tools, while installations requiring line swaps, new adapters, or bumper removal are more complex. If you are unsure or the job requires specialized tools, professional installation is recommended.
Does adding a larger oil cooler affect oil pressure or flow?
A properly sized cooler should maintain adequate oil flow and pressure, but overly restrictive cores or undersized lines can reduce flow. Choose a cooler with sufficient internal passages and match hose diameters to factory specifications to avoid negatively impacting lubrication. In some cases, small changes to pressure can be managed by maintaining correct oil viscosity and using appropriate fittings.
Are there specific maintenance steps for oil coolers?
Regularly inspect hoses, fittings, and mounting points for signs of leaks, corrosion, or looseness. Keep fins and surrounding areas free of debris to ensure proper airflow. If the cooler uses coolant passages, monitor coolant condition and levels, and address contamination promptly. Replacing worn hoses or seals early helps prevent larger failures.
Will an oil cooler help if I tow frequently with my ML‑Class?
Yes, additional or more capable oil cooling can reduce oil temperature rise during towing, which helps protect engine internals under sustained loads. Choose a cooler with higher thermal capacity and ensure routing and hose ratings are suitable for increased operating demands. Proper installation and secure fittings are important for reliability during towing.
How We Chose the Best Mercedes-Benz ML-Class Oil Cooler
To assemble this list we focused on components that reliably manage oil temperatures for the Mercedes-Benz ML-Class while fitting the vehicle’s OEM mounting points. Our evaluation prioritized fitment accuracy, thermal performance under load, material and corrosion resistance, serviceability, and the completeness of supplied hardware or lines. We assessed cooling capacity based on reported flow paths and surface area design, and considered construction quality such as brazed or welded cores and corrosion-resistant finishes. Ease of installation and compatibility with existing oil lines and adapters were important filters, as was the availability of replacement cores or line kits for maintenance. We excluded products lacking clear ML‑Class fitment information, items without verifiable construction details, and entries intended only for racing or heavily modified engines where cooling demands differ substantially. The result is a focused set of seven top-rated oil coolers suitable for typical ML‑Class use cases, from towing and long highway runs to everyday driving.
Our full evaluation process is outlined in our review methodology.
Conclusion
Prioritize fitment and cooling capacity when choosing an oil cooler for a Mercedes‑Benz ML‑Class, while also considering materials, line compatibility, and serviceability. Balance thermal performance with flow characteristics to avoid restricting oil circulation. Plan installations with attention to mounting points and hose routing, and factor in access for future maintenance. Focusing on these tradeoffs will help you select a unit that keeps oil temperatures under control without introducing new service problems.
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