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If you drive an Acura TSX, a properly functioning radiator is essential to keep engine temperatures stable and prevent costly overheating. Choosing the right radiator affects reliability, cooling efficiency, and long-term maintenance needs, so selecting a suitable replacement matters more than a quick fix.This guide covers the top shortlisted radiators for the Acura TSX and explains the evaluation criteria we used, including cooling performance and fitment accuracy. Read on to find options that match your priorities and to understand what to look for when replacing a radiator.
Looking for other parts? See all Acura TSX parts & accessories.
Top Picks at a Glance
| Best overall The best all-around choice for most situations | TRQ Radiator Compatible with 2004–2008 Acura TSX (1-Row Aluminum Core) |  |
| Best quality Built to a higher standard if you want something more solid | CPP Radiator for 2009–2011 Acura TSX 2.4L |  |
| Best Value The sweet spot between price and what you get | CSF 3366 Radiator for Acura TSX 2.4L (2004–2008) |  |
| Best Budget The cheapest option that still gets the job done reliably | SCITOO Radiator Compatible with Acura TSX 2.4L (Fits 2004-2005, 2007-2008) |  |
| Highest Rated A top-rated pick with lots of positive feedback | Denso Radiator 221-3102 (front) |  |
| Most Popular A crowd favorite that many people choose with confidence | Readair Engine Coolant Radiator Assembly with Transmission Oil Cooler for Acura TSX 2004–2008 |  |
| Best Seller A high-volume bestseller chosen again and again | DNA Motoring 2-Row Full Aluminum Radiator (RA-AI94-MT-2) |  |
1. TRQ Radiator Compatible with 2004–2008 Acura TSX (1-Row Aluminum Core)
| Core Row Quantity | 1 |
|---|---|
| Core Thickness | 0.63 in |
| Core Material | Aluminum |
| Outlet Diameter | 1.25 in |
| Inlet Diameter | 1.25 in |
This TRQ radiator is a direct-fit replacement for 2004–2008 Acura TSX vehicles, built with a one-row aluminum core and plastic end tanks to restore engine cooling performance. It replaces the factory unit without modification, so the typical use is a DIY swap or workshop install to address leaks, overheating, or age-related decline. Notable features include a machined aluminum core for heat transfer, 0.63 inch core thickness and 1.25 inch inlet/outlet diameters that match the vehicle plumbing, and pre-assembled mounting points to simplify installation. In practice the radiator provides reliable cooling and straightforward bolt-in fitment for owners wanting a cost-effective repair; TRQ also provides installation videos to guide DIYers. Limitations to keep in mind are the plastic tanks, which can be more vulnerable to impact or long-term thermal cycling than full-metal units, and the part does not include hoses, clamps, or a radiator cap so you may need to reuse or replace those separately. Fit confirmation before purchase is still recommended to ensure exact compatibility with your TSX variant.
Best for: Balanced, practical buyers who want a reliable, cost-effective direct replacement that restores cooling performance without a complicated installation or premium price.
Less Ideal for: Owners seeking the highest durability under extreme use or heavy-duty cooling upgrades should consider a full-aluminum performance radiator instead.
- Direct-fit design for 2004–2008 Acura TSX reduces modification and installation time
- Aluminum single-row core provides effective heat transfer and restores cooling capacity
- Pre-assembled mounting points and matching inlet/outlet sizes simplify DIY or shop replacement
- Comes with manufacturer installation videos to help less experienced installers
- Plastic end tanks are less durable long-term compared with all-aluminum radiators
- Does not include hoses, clamps, or radiator cap so additional parts may be required
Verdict: A budget-friendly, direct-fit radiator that restores factory cooling for Acura TSX owners who want reliable performance with an easy installation.
2. CPP Radiator for 2009–2011 Acura TSX 2.4L
| Fitment | 2009-2011 Acura TSX 2.4L |
|---|---|
| Core type | 1 Row |
| Manufacturer part number | P13082 |
| OEM part number | 19010RL5A51 |
This CPP radiator is a direct-fit replacement for the 2009–2011 Acura TSX 2.4L and is built to match factory cooling performance. It installs as a drop-in unit and is typically used to replace a leaking, clogged, or damaged OEM radiator to restore engine cooling and prevent overheating. Notable features include a one-row core built to OEM standards and vehicle-tested fitment for straightforward installation without modification. The practical benefits are reliable cooling capacity, simplified DIY or shop installation, and compatibility confirmed by manufacturer part references. Limitations are that it is a single-row radiator, which may not provide upgraded cooling for heavily modified or track-driven engines, and the warranty period is limited to one year. Expect OEM-like performance for street and daily driving, but consider higher-capacity aftermarket radiators if you run sustained high loads or performance tuning.
Best for: Performance-oriented buyers who want a high-quality, factory-quality replacement to restore reliable cooling and maintain stock performance without modifying their car.
Less Ideal for: Drivers who plan on aggressive track use or extensive engine tuning should choose a higher-capacity performance radiator instead.
- Direct drop-in fitment for 2009–2011 Acura TSX 2.4L, reducing installation time
- Built to OEM standards for consistent cooling performance and compatibility
- Vehicle-tested design with manufacturer part references for accurate match
- One-row core keeps the unit compact and simplifies replacement procedures
- Single-row core may not offer enough extra cooling for heavily modified or track use
- Limited one-year manufacturer warranty
Verdict: A factory-quality, direct-fit radiator that restores reliable cooling for stock 2009–2011 Acura TSX 2.4L driving but is not the best choice for high-heat performance upgrades.
3. CSF 3366 Radiator for Acura TSX 2.4L (2004–2008)
| Fitment | Acura TSX 2.4L 2004-2008 |
|---|---|
| Model | 3366 |
| Brand | CSF |
The CSF 3366 is a factory-quality replacement radiator sized to fit the Acura TSX 2.4L (2004–2008). It installs in place of the original radiator and is used to circulate coolant and manage engine temperature under normal driving and light performance use. Notable features shown in the product listing include machined exterior components and part-specific fitment for the TSX, which simplifies installation and reduces the chance of leaks or clearance issues. Buyers can expect a straightforward swap with compatible mounting points and provision for fan clips, and reviewers report solid real-world durability after months of use. Limitations are typical of direct-fit replacements: it is a like-for-like replacement rather than a heavy-duty or high-capacity performance unit, and buyers wanting upgraded cooling for track use should consider dedicated performance radiators. Packaging and origin details indicate mass production, so inspect fittings and seams at install.
Best for: Practical optimizers who want a reliable, factory-quality replacement that minimizes installation fuss and restores cooling performance without unnecessary upgrades.
Less Ideal for: Enthusiasts seeking increased cooling capacity for track or heavy towing should look at performance-specific radiators instead.
- Direct-fit design for Acura TSX 2.4L 2004–2008 which eases installation
- Machined exterior finish that suggests consistent manufacturing tolerances
- Reports of reliable operation over months of everyday driving
- Includes mounting provisions compatible with factory fan clips
- Not marketed as a high-capacity or performance radiator for sustained track use
- Country of origin and mass production mean finish details like branding on fins may vary
Verdict: A dependable, direct-fit replacement radiator for TSX owners who prioritize practical value and easy installation.
4. SCITOO Radiator Compatible with Acura TSX 2.4L (Fits 2004-2005, 2007-2008)
| Compatible vehicles | 2004-2005, 2007-2008 Acura TSX 2.4L |
|---|---|
| Transmission oil cooler | Included |
| Engine oil cooler | Not included |
| Manufacturer | SCITOO |
| Model | 125930 |
This SCITOO radiator is a budget-oriented replacement designed to fit Acura TSX 2.4L model years listed and replace the factory unit without modifications. It uses a high-density fin core to improve heat dissipation and includes transmission oil cooler ports while excluding an engine oil cooler. Buyers will install it the same way as the original radiator using factory mounting points, and the package includes standard rubber grommets and basic accessories. Practical benefits are straightforward: lower cost, an emphasis on easy swap-in installation, and improved cooling surface area over some worn originals. Important limitations are variable build quality compared with factory parts and the use of included adapters for some transmission lines that in a few reports required adjustment to avoid interference; the cap is not included. For a value-focused repair where keeping the original fitment and basic cooling performance matters, this radiator is a reasonable option but not a premium OEM-level replacement.
Best for: Budget-conscious owners seeking an affordable, direct-fit radiator replacement for an Acura TSX 2.4L who prioritize cost savings and a quick, no-mods swap-in.
Less Ideal for: Drivers who want a long-term, premium factory-quality replacement or who expect perfect factory-level fit and finish without any on-vehicle adjustments should consider higher-end radiators or dealer parts instead.
- Designed to match factory mounting points for straightforward installation
- High-density fin core for improved heat dissipation compared with aged radiators
- Includes transmission oil cooler ports for vehicles that require them
- Comes with rubber grommets and basic accessories to simplify installation
- Build materials and thickness are thinner than some factory radiators, reflecting lower-cost construction
- Does not include a radiator cap
- Some applications may require using supplied adapters that need careful routing or adjustment to avoid interference
Verdict: A low-cost, direct-fit radiator that restores cooling performance for Acura TSX 2.4L owners who need an affordable replacement.
5. Denso Radiator 221-3102 (front)
| Brand | Denso |
|---|---|
| Manufacturer Part Number | 221-3102 |
| Position | Front |
This Denso radiator is a direct-style replacement intended to restore proper engine cooling on affected vehicles. It installs where the original front radiator sits and functions as the main heat exchanger to keep engine temperature in range under normal driving. The unit is painted and carries the manufacturer part number for fitment; customers report straightforward fit and capability to return a vehicle to service quickly. Denso positions the part as built to factory-quality standards and tested for reliability, which translates to stable cooling, predictable thermostat response, and reduced risk of overheating when installed correctly. Some buyers have noted occasional cosmetic damage to packaging or slight variation from original factory parts, and a radiator cap is not included so plan to reuse or replace the cap during installation. Expect typical installation steps such as draining coolant, transferring brackets or sensors if needed, and verifying fans and condenser alignment.
Best for: A reliability-focused buyer who prioritizes a factory-quality replacement to restore or maintain dependable cooling and avoid repeat repairs.
Less Ideal for: Drivers seeking a performance-upgrade radiator with increased cooling capacity or lightweight construction should consider aftermarket performance cores instead.
- Factory-quality design aimed at direct fit for compatible vehicles
- Painted finish helps resist corrosion and appearance wear
- Widely reported to restore proper cooling and engine performance
- Manufactured by a recognized automotive supplier with testing to meet OEM standards
- Radiator cap is not included so a separate purchase or reuse is required
- Occasional reports of minor cosmetic or packaging damage on arrival
Verdict: A practical, factory-quality front radiator replacement aimed at reliability-focused owners who want dependable cooling restoration.
6. Readair Engine Coolant Radiator Assembly with Transmission Oil Cooler for Acura TSX 2004–2008
| Compatible vehicles | Acura TSX 2004-2008 Base L4 2.4L, Automatic Transmission |
|---|---|
| Transmission oil cooler | Included |
| Core thickness | 5/8 inch |
| Core height | 15-3/4 inch |
This Readair radiator replaces the factory unit on Acura TSX 2004–2008 models with an automatic transmission and includes a built-in transmission oil cooler. It is intended as a direct-fit replacement so installers can swap it into the TSX without major modification. The core is aluminum with TIG-welded end tanks and reinforced plastic inlet/outlet housings, and the assembly is pressure tested to reduce leak risk. For a convenience-focused buyer this product simplifies repairs by combining engine coolant cooling and the transmission cooler in one part and matching factory mounting points. Practical benefits include compatibility with the TSX cooling layout and a treated coating to resist corrosion. Limitations to consider are variable long-term durability reported by some users and the potential need for careful installation to avoid stress on plastic fittings. Buyers should be prepared to validate fit and inspect for shipping damage before installation.
Best for: Convenience-driven owners who want a single, ready-to-install replacement that restores both engine and transmission cooling with minimal parts-sourcing and downtime.
Less Ideal for: Owners seeking a heavy-duty or performance-grade cooling solution for track use or sustained high-load driving should consider higher-spec aftermarket radiators or factory-quality alternatives.
- Direct-fit design made for Acura TSX 2004–2008 automatic models
- Integrated transmission oil cooler reduces the number of separate parts to install
- Aluminum core with TIG-welded joints and treated coating for corrosion resistance
- Pressure-tested assembly to help reduce the chance of leaks out of the box
- Some buyers report inconsistent long-term durability of the plastic tank components
- Installation can be fiddly and may require care to avoid stressing inlet/outlet fittings
Verdict: A convenient, direct-fit radiator that replaces both the engine radiator and transmission cooler on Acura TSX 2004–2008, suitable for owners wanting a straightforward repair but not for heavy-duty performance needs.
7. DNA Motoring 2-Row Full Aluminum Radiator (RA-AI94-MT-2)
| Cooler Heatsink Material | Aluminum |
|---|---|
| Mounting Type | Chassis Mount |
| Product Dimensions | 26.5"L x 17"W x 2"H |
This DNA Motoring 2-row full aluminum radiator is a direct-fit style replacement intended to improve cooling compared with many stock radiators. It is used as a bolt-in radiator to replace a failing or marginal factory unit and is promoted for higher heat dissipation thanks to its T-6061 aluminum construction and 2-row racing-style core. In real use you can expect lower operating temperatures under load and better recovery during repeated high-speed or spirited driving. Buyers should note the finish and weld quality have mixed feedback, so some units may need minor cleanup or adjustment during installation. The radiator does not include fan mounting brackets, which means you may need to adapt or weld mounts if retaining the factory air conditioning fan assembly. For a mainstream, risk-averse replacement on an Acura TSX this radiator offers stronger cooling potential than many stock pieces, but installation care and inspection of welds and packaging on arrival are recommended to avoid fitment hassles.
Best for: A risk-averse mainstream buyer looking for a stronger, factory-style replacement that reduces overheating risk while keeping maintenance and installation straightforward.
Less Ideal for: Not a good choice for buyers who need a cosmetically perfect showpiece or who want a complete plug-and-play cooling kit with fan hardware and accessories included.
- Full aluminum T-6061 construction for improved heat transfer and corrosion resistance
- 2-row high-capacity core designed to reduce engine operating temperature under load
- Direct bolt-on, OEM-style mounting for straightforward replacement in supported vehicles
- Reported inconsistent weld and finish quality on some units
- No fan mounting brackets provided which may require fabrication to retain some factory fans
Verdict: A practical aluminum replacement that improves cooling for an Acura TSX but may require minor installation tweaks due to inconsistent finish and missing fan mounts.
Choosing the Right Acura TSX Radiator: Key Factors to Consider
Cooling Capacity
Cooling capacity determines how effectively a radiator can dissipate heat from the engine. A higher capacity unit helps maintain safe operating temperatures during heavy traffic, towing, or spirited driving, reducing the risk of overheating.
When evaluating cooling capacity, consider core size, fin density, and overall surface area. These aspects influence heat transfer rates and how quickly coolant temperatures drop as air passes through the radiator.
Fitment And Mounting
Correct fitment is crucial to avoid installation hassles and to ensure proper alignment with hoses, fan shrouds, and mounting points. A radiator that matches factory mounting locations reduces the need for modifications and lowers the risk of leaks caused by stress on connections.
Check inlet and outlet orientation, bracket placement, and clearance with surrounding components. Mismatched fittings can create installation delays and may require additional adapters or custom brackets.
Materials And Corrosion Resistance
The materials used in the radiator core and tanks affect durability and longevity. Aluminum cores with appropriate coatings tend to offer good thermal conductivity and resistance to rust, while plastic tanks may be lighter but sometimes less durable under thermal cycling.
Consider corrosion protection features like protective coatings, anodizing, or treated seams. These protections slow degradation from coolant additives and road contaminants, extending service life and reducing the chance of premature failure.
Leak Resistance And Build Quality
Leak resistance comes from precision manufacturing, robust joints, and quality seals. Radiators assembled with sound brazing or high-quality crimping at the seams are less likely to develop slow leaks over time.
Inspect construction methods when possible and review specifications about pressure ratings and seal types. A well-built radiator reduces the frequency of repairs and the likelihood of roadside breakdowns.
Compatibility With Cooling System
A replacement should work with the existing coolant flow rate, transmission cooler lines if applicable, and fan setup. Compatibility affects cooling efficiency and ensures the radiator integrates with thermostats, sensors, and auxiliary systems.
Confirm that the radiator supports any factory-equipped transmission cooler or sensor ports and that hose diameters and positions match the vehicle. Mismatches can impair cooling performance or require additional adapters.
Ease Of Installation And Serviceability
Ease of installation influences total labor time and whether the job is feasible for a DIYer. Radiators that include necessary mounting hardware, clear port placement, and straightforward hose access make installation quicker and reduce the chance of installation errors.
Serviceability also covers how easy it is to flush the system, replace hoses, or access sensors after the radiator is installed. Designs that allow straightforward maintenance can lower long-term ownership costs and simplify routine coolant service.
How We Chose the Best Acura TSX Radiator
We prioritized radiators that deliver consistent cooling capacity and precise fitment for the Acura TSX while also considering build quality and long-term durability. Our evaluation focused on thermal performance under sustained load, materials and corrosion resistance, factory-style mounting points and hose compatibility, and ease of installation. We also considered manufacturing tolerances that affect leak resistance and the availability of necessary hardware or brackets.We excluded poorly documented units, radiators with unclear fitment claims, and options lacking basic corrosion protection or standardized inlet/outlet layouts. We did not include products with unverified compatibility or models that require extensive vehicle modifications. The final list reflects components that balance effective heat rejection, correct vehicle fit, durable construction, and straightforward installation for typical maintenance and repair scenarios.
Our full evaluation process is outlined in our review methodology.
FAQ
How do I know if my Acura TSX radiator is failing?
Common signs of a failing radiator include low coolant levels without visible external leaks, persistent engine overheating, or coolant discoloration. You may also notice steam from the engine bay or a sweet smell from leaking coolant. If you suspect a problem, inspect hoses and connections for wetness and check for signs of corrosion or deposits around seams.
Can I replace the radiator myself on an Acura TSX?
Many owners can complete a radiator replacement with moderate mechanical skill and basic tools, since the procedure typically involves draining coolant, disconnecting hoses and fans, and swapping mounting brackets. However, ensure you follow proper steps for coolant disposal, bleeding air from the system, and securing all fittings. If you are unsure, professional installation reduces the risk of leaks or improper bleeding.
Should I flush the cooling system when installing a new radiator?
Flushing the cooling system is usually recommended when replacing a radiator to remove rust, scale, and old coolant additives. A clean system helps the new radiator perform optimally and reduces the chance of blockages. After flushing, refill with the correct coolant mixture and bleed air according to vehicle procedures.
What affects the cost of a radiator repair for an Acura TSX?
Repair costs vary depending on whether the issue is a simple hose or clamp replacement, a small localized leak repair, or a full radiator replacement. Labor time, part availability, and the need for additional components like mounting hardware or coolant all influence total cost. In many cases, complete replacement is chosen when leaks are widespread or seams and tanks are compromised.
Is OEM better than aftermarket for a radiator replacement?
OEM parts often match original fitment and mounting exactly, which can simplify installation, while some aftermarket radiators offer upgraded materials or improved cooling. The best choice depends on your priorities for fitment precision, material preferences, and long-term durability. Look for units with clear fitment documentation and appropriate construction quality.
How can I tell if a radiator leak is small enough to repair?
Small leaks from hose connections or loose clamps are often repairable by tightening or replacing the affected components. Leaks from corroded cores, cracked tanks, or brazed seams usually indicate more serious damage and often warrant replacement. Evaluate the source, accessibility, and severity of the leak before deciding on a repair strategy.
Conclusion
When choosing an Acura TSX radiator, prioritize proper fitment and cooling capacity first, then consider materials and build quality to match your durability expectations. Factor in ease of installation and whether the unit supports any required transmission cooler or sensor ports.Balancing thermal performance against long-term corrosion resistance and leak resistance will guide the best choice for your driving conditions. If you value straightforward installation, look for options that include correct mounting points and clear compatibility documentation.
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