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Your Mazda CX-5 depends on a healthy cooling system to avoid engine damage and maintain consistent performance. Choosing the right radiator matters because it directly affects cooling efficiency, longevity, and how easy the unit is to install or service. This guide highlights seven shortlisted radiators that meet core requirements for fitment, cooling capacity, and durability. We evaluated each option against common failure modes, construction quality, and compatibility with standard coolant maintenance. Read on to see which radiators made the list and what to consider before you replace yours.
Looking for other parts? See all Mazda CX-5 parts & accessories.
Top Picks at a Glance
| Best Overall The best all-around choice for most situations | A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler for Mazda CX-5 2.5L (2017–2023) |  |
| Best Quality Built to a higher standard if you want something more solid | Cooling Direct Radiator Replacement for 2017-2021 Mazda CX-5 2.5 Turbo (Aluminum Core, Plastic Tank) |  |
| Best Value The sweet spot between price and what you get | LAWTOOLIGHT Engine Radiator for Mazda CX-5 (2013–2020) |  |
| Best Budget The cheapest option that still gets the job done reliably | Autoshack Radiator for Mazda CX-5 (2013–2024) |  |
| Highest Rated A top-rated pick with lots of positive feedback | TRQ Radiator Compatible with Mazda CX-5 (2013–2018, 2019 2.5L, 2020–2024) |  |
| Most Popular A crowd favorite that many people choose with confidence | SCITOO Radiator Replacement for 2013–2020 Mazda CX-5 |  |
| Best Seller A high-volume bestseller chosen again and again | NOTUDE Radiator for Mazda CX-5 (2013–2020) | |
1. A-Premium Engine Coolant Radiator Assembly with Transmission Oil Cooler for Mazda CX-5 2.5L (2017–2023)
| Vehicle Fitment | Mazda CX-5 2017-2023 2.5L |
|---|---|
| Transmission Oil Cooler | Included |
| Reference Numbers | 13659, MA3010244, PYFW15200 |
| Manufacturer Part Number | APRAD2133 |
This A-Premium radiator assembly replaces the primary radiator on Mazda CX-5 2.5L models and includes an integrated transmission oil cooler for vehicles that require it. It is intended as a direct-fit factory-quality replacement to restore cooling performance after a failed or leaking radiator. Typical use is straightforward: remove the old radiator, transfer any reusable brackets or sensors, and install this unit using factory hoses and fittings. Notable features include the built-in transmission oil cooler and full assembly format that reduces parts hunting and installation time. In practical use the assembly should return stable engine and transmission temperatures and help prevent overheating under normal driving and light towing. Limitations are that it does not include an engine oil cooler and buyers should verify inlet and outlet diameters and mounting points against their vehicle before installation; professional installation is recommended for owners unfamiliar with coolant system bleeding and transmission cooler connections.
Best for: Balanced all-round buyers who want a ready-to-install, factory-style replacement to restore reliable cooling on a Mazda CX-5 without chasing multiple parts.
Less Ideal for: Those seeking a performance or heavy-duty cooling upgrade for frequent towing or track use should consider aftermarket high-capacity radiators instead.
- Integrated transmission oil cooler simplifies replacement for CX-5s with an automatic transmission
- Full radiator assembly reduces the need to source separate core, tanks, or fittings
- Manufactured and tested to restore factory cooling performance
- Compatible fitment listed specifically for Mazda CX-5 2.5L (2017–2023)
- Does not include an engine oil cooler for applications that require one
- Buyers must confirm inlet/outlet diameters and mounts to ensure exact fit before purchase
Verdict: A complete, direct-fit radiator assembly with integrated transmission cooler that restores factory cooling performance for Mazda CX-5 2.5L owners.
2. Cooling Direct Radiator Replacement for 2017-2021 Mazda CX-5 2.5 Turbo (Aluminum Core, Plastic Tank)
| Manufacturer | Cooling Direct |
|---|---|
| Manufacturer Part Number | CDR13872A |
| OEM Part Number | PX3515200 |
| Core Dimensions | 16.74 x 16.74 x 1.07 inches |
This Cooling Direct radiator is a direct-fit replacement intended for 2017–2021 Mazda CX-5 models with the 2.5 turbo four-cylinder. It installs like a factory part and is used to restore the vehicle cooling system after a leak or damage. The unit features an aluminum core with plastic tanks and core dimensions that match factory form for straightforward drop-in fitment. For performance-oriented owners the radiator’s OEM-standard construction helps maintain consistent engine temperatures under normal and spirited driving, and being vehicle-tested reduces fitment fuss. Practical benefits include easier installation compared with universal radiators and a one-year manufacturer warranty for short-term peace of mind. Limitations are the plastic tanks rather than full-alloy construction and a single-year warranty window, so long-term durability under heavy track use may be a concern compared with performance-specific all-metal radiators.
Best for: Performance-oriented Mazda CX-5 owners who prioritize factory-equivalent cooling reliability and want a straightforward, vehicle-tested replacement that maintains engine temperature control under spirited driving.
Less Ideal for: Drivers planning frequent heavy track use or extensive high-heat modifications should consider a purpose-built all-aluminum performance radiator instead.
- Direct-fit design tested for 2017–2021 Mazda CX-5 for straightforward installation
- Aluminum core provides good heat transfer for consistent cooling
- Built to OEM standards for fitment and performance
- Includes a one-year manufacturer warranty
- Plastic tanks rather than full-aluminum construction may be less durable under extreme use
- Warranty period is limited to one year
Verdict: A vehicle-tested, OEM-standard replacement radiator that restores reliable cooling performance for 2017–2021 Mazda CX-5 2.5 turbo engines.
3. LAWTOOLIGHT Engine Radiator for Mazda CX-5 (2013–2020)
| Brand | LAWTOOLIGHT |
|---|---|
| Model | 127727 |
| Manufacturer Part Number | 127727-5408-1046163372 |
| Item Weight | 8.82 pounds |
This LAWTOOLIGHT radiator is a direct-fit replacement intended for Mazda CX-5 models from 2013 through 2020 with 2.0L, 2.2L, or 2.5L engines. It replaces the factory radiator to restore proper coolant flow and engine temperature control after a leak or failure. The unit is painted and arrives ready for installation; the listing notes the part matches common reference numbers used for CX-5 radiators. For a practical DIYer the seller claims straightforward installation and no special modifications are required, which helps keep repair cost down compared with dealer replacement. The radiator’s construction and finish aim to return the cooling system to optimum operation, but the listing does not include detailed construction materials, core type, or thermal capacity, so expectations should be realistic for a value-focused aftermarket part. If you need an inexpensive, vehicle-specific replacement to get a CX-5 back on the road quickly, this radiator is positioned as a budget-conscious choice, though installers who require explicit material specs or performance data may prefer a different option.
Best for: Practical optimizers who prioritize restoring cooling performance on a Mazda CX-5 without paying dealer prices and who handle or coordinate routine repairs themselves.
Less Ideal for: Buyers seeking documented performance specs, premium materials, or race-grade cooling upgrades should consider higher-end or OEM-quality alternatives.
- Vehicle-specific fitment for Mazda CX-5 2013–2020 2.0L/2.2L/2.5L applications
- Painted finish that arrives ready to install and match engine-bay appearance
- Frames the vehicle as a DIY-friendly replacement to lower repair costs
- Listing lacks detailed material and core specifications such as tube type or cooling capacity
- No explicit performance data or test results provided to compare with factory or premium radiators
Verdict: An affordable, vehicle-specific replacement radiator that helps CX-5 owners restore cooling function and minimize repair cost.
4. Autoshack Radiator for Mazda CX-5 (2013–2024)
| Fitment | Mazda CX-5 2013-2024 L4 2.0L/2.2L/2.5L |
|---|---|
| Core Rows | 1 |
| Exterior | Aluminum, Plastic |
| Manufacturer Part Number | RDK0010 |
| OEM Part Number | CU13317 |
This Autoshack radiator is a budget-focused, direct-fit replacement for Mazda CX-5 2013–2024 four-cylinder models. It installs in place of the factory unit to handle routine engine cooling and is intended for drivers who need a straightforward repair rather than an upgrade. The radiator uses an aluminum core with plastic end tanks and is supplied as a single-row core built to maintain steady coolant temperatures in normal driving conditions. It does not include a radiator cap or transmission oil cooler and is specified for manual-transmission applications without an integrated oil cooler. Practical benefits are simple fitment for matching CX-5 configurations, substitution for a leaking or damaged factory radiator, and cost savings compared with premium aftermarket options. Important limitations are the lack of an included cap and absence of built-in transmission cooling, so verify your vehicle's cooling-package and have a qualified technician install and pressure-test the system to ensure leak-free operation.
Best for: Budget-conscious owners seeking an affordable, factory-replacement style radiator to restore reliable cooling on a Mazda CX-5 and keep repair costs low.
Less Ideal for: Drivers looking for a performance upgrade, integrated transmission cooling, or a complete plug-and-play kit with cap and additional fittings should consider higher-end or vehicle-specific premium options.
- Direct-fit design tailored for Mazda CX-5 2013–2024 four-cylinder models
- Aluminum core construction for effective heat dissipation
- Single-row core focuses on reliable everyday cooling performance
- Radiator cap and transmission oil cooler are not included
- Specified for manual transmission without integrated transmission cooling
Verdict: A cost-focused, direct-fit replacement radiator that restores reliable cooling for Mazda CX-5 four-cylinder models without frills.
5. TRQ Radiator Compatible with Mazda CX-5 (2013–2018, 2019 2.5L, 2020–2024)
| Fitment | Mazda CX-5 2013-2018, 2019 L4 2.5L, 2020-2024 |
|---|---|
| Core Material | Aluminum |
| Core Row Quantity | 1 |
| Tank Material | Plastic |
| Core Thickness | 0.63 in |
This TRQ radiator is a direct-fit replacement for specified Mazda CX-5 years and is built around a one-row aluminum core with plastic tanks and top/bottom inlet and outlet placement that matches the factory layout. It is typically used to replace a leaking or damaged radiator and is intended for DIY or shop installation using the original mounting points. Notable features include a down-flow design, pre-assembled fittings for transmission cooler lines when applicable, and a 0.63 in core thickness aimed at balancing cooling and package fit. In real-world use it restores proper engine cooling and many owners report straightforward fitment and reliable performance without leaks when installed carefully. Important limitations are the plastic tank construction, which can feel less robust than fully metal units and has produced a few reports of cracking over longer service; buyers should inspect packaging on arrival and follow proper installation steps to avoid damage. Overall it offers a good factory-quality replacement option for reliability-minded CX-5 owners seeking a like-for-like cooling solution.
Best for: Reliability-focused Mazda CX-5 owners who prioritize a factory-style, direct-replacement radiator to restore cooling performance with minimal modification and straightforward installation.
Less Ideal for: Drivers who need an upgraded cooling solution for heavy towing, track use, or higher-than-stock engine output should consider performance or multi-row radiators instead.
- Direct-fit design that uses original mounting points for straightforward installation
- Aluminum core provides effective heat transfer comparable to factory radiators
- Pre-assembled fittings for transmission cooler lines simplify replacement where required
- Many user reports of proper fit and immediate resolution of overheating or leaks
- Plastic tanks can be more fragile than full-metal radiators and have reported cracking in some cases
- Single-row core may not offer extra cooling margin for heavy towing or extreme high-load use
Verdict: A practical, direct-fit aluminum-core radiator that returns factory cooling performance for the Mazda CX-5 with mostly straightforward installation.
6. SCITOO Radiator Replacement for 2013–2020 Mazda CX-5
| Fitment | 2013–2020 Mazda CX-5 (2.0L, 2.2L, 2.5L) |
|---|---|
| Manufacturer | SCITOO |
| OEM Part Number | 13317 |
| Model | 127727 |
This SCITOO radiator is designed as a direct replacement for Mazda CX-5 2.0L, 2.2L, and 2.5L models from 2013 through 2020 and aims to restore the vehicle's cooling system to factory-like operation. It features a high-density fin core intended to improve heat dissipation and a pressurized design to help raise coolant boiling point and reduce the chance of overheating. Typical use is a standard radiator swap during maintenance or following a failure; the listing says it matches OEM size and shape so installation should require no modifications for a correct-fit vehicle. Practical benefits include improved cooling flow and simple bolt-in installation for DIYers or shops, plus broad fitment across CX-5 engine options. Limitations in seller feedback show occasional missing or mis-sized mounting clips and rare reports of early plastic tank cracks, which means buyers should inspect mounting points and be prepared to reuse factory clips or perform minor fabrication in a few cases. The product does not include engine oil or transmission oil coolers.
Best for: Convenience-driven buyers who want a bolt-in replacement to quickly restore proper cooling on a Mazda CX-5 without extensive modification or custom work.
Less Ideal for: Drivers seeking a heavy-duty or performance aftermarket radiator for aggressive towing, track use, or long-term high-heat duty should consider upgraded aluminum performance options instead.
- Direct-fit design for 2013–2020 Mazda CX-5 to simplify installation
- High-density fin core for improved heat dissipation compared with worn radiators
- Pressurized construction intended to maintain cooling efficiency at higher temperatures
- Some units reported missing or incorrect mounting clips requiring reuse of old clips or minor fabrication
- Occasional reports of plastic tank failure after several months in a small number of reviews
Verdict: A convenient, direct-fit radiator replacement for Mazda CX-5 owners who need a quick, factory-spec cooling system restore.
7. NOTUDE Radiator for Mazda CX-5 (2013–2020)
| Manufacturer | NOTUDE |
|---|---|
| Model | Radiator |
| Compatibility | Mazda CX-5 2013-2020 |
| Item Weight | 8.82 pounds |
This NOTUDE radiator is a factory-replacement style cooling unit intended for Mazda CX-5 models from 2013 to 2020. It installs in place of the original radiator and uses an aluminum core and optimized heat sink design to move heat away from the engine and lower coolant temperatures during long drives or heavy use. Typical use is as a like-for-like replacement for a failed or leaking radiator to restore normal cooling performance and avoid overheating. The product emphasizes efficient heat dissipation and claims to reduce thermal stress on engine components, which helps extend engine life when the cooling system is functioning properly. Practical benefits include straightforward compatibility labeling for CX-5 owners and a lightweight aluminum build that speeds heat transfer. Important limitations are that bolt-on fitment and accessory compatibility should be verified before purchase and the listing provides limited manufacturer detail or warranty information compared with established OEM suppliers.
Best for: Risk-averse mainstream buyers who prioritize restoring reliable factory-quality cooling and minimizing the chance of engine overheating during everyday driving and longer trips.
Less Ideal for: Drivers seeking guaranteed OEM-backed parts, extended warranty coverage, or those who need custom performance radiators for motorsport use should consider alternate suppliers.
- Direct-fit replacement labeled for Mazda CX-5 2013–2020 which simplifies selection
- Aluminum core and optimized heat sinks for efficient heat dissipation
- Lightweight construction that aids cooling responsiveness and handling during temperature spikes
- Manufacturer and warranty details are sparse in the listing
- Fitment and accessory compatibility are not exhaustively documented and may require verification
Verdict: A straightforward, aluminum-core direct replacement radiator for Mazda CX-5 owners who want to restore reliable cooling and prevent overheating.
Choosing the Right Mazda CX-5 Radiator: Key Factors to Consider
Fitment and Compatibility
Exact fitment prevents installation headaches and potential leaks. Verify inlet and outlet locations, mounting tab positions, and overall dimensions to ensure the radiator aligns with factory brackets and adjacent components. Poor fit can cause hoses to twist or pull, accelerating wear and increasing the risk of failure. A radiator that fits correctly also preserves space for fans, shrouds, and any transmission cooler lines if present. Consider OEM-style connections and whether existing clamps and hoses will mate cleanly. Checking compatibility reduces the chance of needing modifications during install and helps maintain proper coolant flow paths.
Thermal Performance
Cooling capacity determines how effectively the radiator removes heat from the engine. Look at core design, fin density, and the number of coolant passages since these influence heat exchange efficiency. Higher thermal performance is especially important if you live in hot climates, tow frequently, or drive aggressively. However, overly dense fins can clog more easily in dirty environments, so balance performance with serviceability. Proper thermal performance helps avoid overheating, reduces stress on the thermostat and water pump, and contributes to consistent engine temperatures under varied loads.
Construction Material and Corrosion Resistance
Materials and finishing affect longevity and leak resistance. Common constructions use aluminum cores with plastic or aluminum tanks; each has tradeoffs in weight, durability, and repairability. Corrosion-resistant coatings, quality brazing or welding, and reinforced seams reduce the likelihood of premature leaks. Consider the coolant types you plan to use and whether the radiator's materials are compatible to avoid accelerated corrosion. A well-built radiator minimizes the need for frequent repairs and supports reliable performance across seasonal changes and during coolant maintenance procedures.
Ease of Installation and Serviceability
A radiator that is straightforward to install saves time and reduces the chance of installation errors. Look for units designed to align with factory mounting points, with clear access to drain plugs and sensor ports. Serviceability also means easier access for routine tasks like coolant flushes and checking for leaks. Features such as integrated fittings in factory locations or pre-installed mounting hardware can simplify the process. Ease of installation is especially relevant if you plan to handle the replacement yourself or want to minimize labor time at a shop.
Leak Resistance and Repairability
Radiator leaks are a common failure mode, so evaluate how the unit resists leaks and how it can be repaired if necessary. Reinforced seams, high-quality brazing, and sturdy tank attachments reduce initial leak risk. If repairability matters, consider whether the construction allows for localized fixes or requires full replacement if damaged. Leak-resistant designs also reduce the frequency of coolant top-offs and the chance of engine overheating caused by gradual fluid loss. Understanding likely failure modes helps set expectations for maintenance and potential repair costs.
Compatibility With Maintenance Procedures
Consider how the radiator performs during routine maintenance like coolant flushes and pressure checks. Drain access, sensor port placement, and compatibility with common coolant types make service easier and reduce the risk of trapped air pockets after refilling. Some designs facilitate complete draining and better flushing of deposits, which helps extend cooling system life. Compatibility with standard service tools and procedures lowers labor complexity and helps ensure a thorough maintenance job that preserves cooling efficiency over time.
How We Chose the Best Mazda CX-5 Radiator
We focused on criteria that matter for Mazda CX-5 radiators specifically, prioritizing fitment accuracy, thermal performance, material and build quality, ease of installation, and long-term durability. Fitment accuracy included inlet and outlet placement, mounting points, and clearance for nearby components. Thermal performance was judged by core design, fin density, and overall heat dissipation potential for typical driving conditions. Material and build quality looked at core and tank construction, brazing or weld quality, and corrosion resistance. Ease of installation covered whether the unit aligns with factory brackets and hose locations and how straightforward routine service access is. Durability factors included resistance to leaks, reinforcement at high-stress points, and suitability for coolant maintenance procedures. We excluded units lacking clear fitment data or with ambiguous construction details. The final list reflects items that meet these technical dimensions and practical requirements for CX-5 owners.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I tell if my Mazda CX-5 radiator is failing?
Common signs often include visible coolant leaks beneath the vehicle, frequent low coolant levels, or the engine running hotter than normal. You may also notice steam from the engine bay or a sweet coolant odor. These symptoms usually warrant a pressure test and visual inspection to confirm the source.
Can I replace the radiator myself on a Mazda CX-5?
Many owners can perform a radiator replacement if they have basic mechanical skills and the right tools. The job typically involves draining coolant, removing mounting hardware and hoses, and reinstalling the new unit while ensuring proper hose connections and bleed procedures. If you are unsure about bleeding the system or aligning fitment, professional help reduces the risk of installation mistakes.
Should I flush the cooling system when installing a new radiator?
A coolant flush is usually recommended to remove sediment and contaminants that can reduce the new radiator's effectiveness. Flushing helps restore coolant chemistry and prevents premature clogging. Make sure you follow the vehicle's service recommendations for coolant type and mixing ratios after flushing.
How long does a typical radiator last in a Mazda CX-5?
Radiator lifespan varies with driving conditions, maintenance, and material quality, but they often last many years under normal use. Factors like road salt exposure, frequent short trips, or previous cooling system problems can shorten life expectancy. Regular inspection and coolant maintenance help extend service life.
What are common fixes for a small radiator leak?
Minor leaks can sometimes be addressed with targeted repairs such as replacing a hose clamp, tightening a fitting, or using an appropriate repair patch or sealant designed for radiators. These are often temporary measures; larger or persistent leaks typically require a more permanent repair or full radiator replacement. A pressure test can help identify the leak location before attempting fixes.
Conclusion
Prioritize fitment accuracy, thermal performance, and durable construction when choosing a Mazda CX-5 radiator. Ease of installation and resistance to leaks will affect both initial installation effort and long-term ownership experience. Balance performance needs with serviceability and compatibility with routine coolant maintenance to pick an option that meets your driving conditions and maintenance preferences.
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- Check out all Mazda CX-5 parts & accessories
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