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A Guide to Replacing the Radiator in Your 2011-2017 Buick Regal

Keep your Regal's engine cool and prevent costly damage by understanding your radiator replacement options.

4 minutes to read 2011-2017 Buick Regal
Difficulty
3/5
Est. Time
2.5 hrs
DIY Doable?
✅ Yes
Shop Labor
$305-$450
Used OEM Price
$75-$150
🚫 Do not drive — Driving with a significantly leaking or malfunctioning radiator risks catastrophic engine damage from overheating.
Key Takeaways
  • A failing radiator will cause your Regal to overheat; look for leaks, a high temperature gauge, or a sweet smell.
  • Driving with an overheating engine can cause severe, expensive damage. Do not ignore the symptoms.
  • High-quality aftermarket brands like Denso and CSF offer OEM-level quality for a much lower price.
  • While replacing the radiator, it is a smart and cost-effective move to also replace the radiator hoses and thermostat.
The radiator is the heart of your Buick Regal's cooling system. It works like a heat exchanger to cool the hot fluid, called coolant or antifreeze, that circulates through your engine. As you drive, air flows through the radiator's fins, carrying heat away from the coolant. This process is essential to prevent your engine from overheating, which can cause serious and expensive damage.

Is Your Buick Regal's Radiator Failing?

A side-by-side comparison of a brand new radiator with clean fins and a failed radiator showing a crack in the plastic side tank with dried coolant residue.
A new radiator (left) features clean, unobstructed cooling fins and intact side tanks, while a failing unit (right) often develops cracks in the plastic tanks or heavy corrosion.

A failing radiator is a serious issue. If your engine overheats, it can lead to major damage. Watch for these common signs that your 2011-2017 Buick Regal may need a new radiator.

Symptoms of a Bad Radiator

  • Engine Temperature Gauge Climbing: The most obvious sign is your car's temperature gauge reading higher than normal or entering the red zone.
  • Coolant Leaks: You might see puddles of bright green, pink, or orange fluid 🎬 Watch: How to find any leak in your cooling system under the front of your car. These leaks often come from cracked plastic side tanks, a common failure point on modern radiators.
  • Low Coolant Light: A frequent need to top off your coolant suggests a leak somewhere in the system.
  • Sweet Smell: Antifreeze has a distinct sweet smell. If you notice this odor inside or outside your car, it's a sign of a leak.
  • Steam from Under the Hood: If you see steam, pull over immediately once it is safe. This indicates a significant coolant leak and an overheating engine. A GM Technical Service Bulletin (TSB #19NA104) notes that steam can sometimes be seen coming from the grille area under certain conditions, which might not always indicate a major leak.

Can I Drive with a Leaking Radiator?

It is not recommended. A small leak can quickly become a big one, leaving you stranded with an overheated engine. Driving with an overheating engine can lead to catastrophic damage, including a warped cylinder head or a completely failed engine.

Choosing the Right Aftermarket Radiator

A premium aftermarket Denso or CSF radiator in its retail packaging ready for installation.
Choosing premium aftermarket brands like Denso or CSF ensures OEM-level fitment and cooling performance for your Buick Regal.

When replacing the radiator on your Buick Regal, you don't have to pay high dealership prices for an OEM (Original Equipment Manufacturer) part. Quality aftermarket brands offer excellent performance for a fraction of the cost. Here’s a breakdown of the brands available.

  • Premium Aftermarket (Denso, CSF Radiator): Denso is a major OEM supplier, meaning their aftermarket parts are often the same quality as what the factory installed. CSF is another well-regarded brand known for high-quality, reliable radiators. Choosing one of these brands gives you OEM-level performance and fit without the OEM price tag.
  • Standard Aftermarket (Spectra): Spectra is a large, well-known manufacturer of good, reliable replacement parts. While some users have reported shorter lifespans compared to premium brands, they offer a solid balance of quality and affordability for most drivers.
  • Economy Aftermarket (One Stop Solutions, Onix): These brands are typically the most affordable. They can be a good choice for a budget-conscious repair, but may not offer the same long-term durability or precise fit as premium or standard options.

Pro Tip: For a critical part like a radiator, spending a little more on a premium aftermarket brand like Denso or CSF is a smart investment. The extra cost is minimal compared to the potential cost of engine damage from a failure of a lower-quality part.

Buick Regal Radiator Replacement Costs

A mechanic working on the front end of a Buick Regal to access the radiator assembly.
Labor costs for a Buick Regal radiator replacement range from $305 to $450, as the front fascia or cooling fans often need to be moved for access.

The cost to replace your radiator can vary greatly depending on whether you do it yourself or have a shop do the work.

Part / Service Estimated Cost
New Aftermarket Radiator (DIY) $130 - $195
New OEM Radiator Part $700+
Shop Labor $305 - $450
Total Professional Replacement (Aftermarket Part) $435 - $645
Total Professional Replacement (OEM Part) $1,000 - $1,250+

Costs are estimates and can vary by location and specific vehicle configuration.

Frequently Asked Questions

Close-up of the radiator and cooling fan assembly inside a 2011-2017 Buick Regal engine bay.
Replacing the radiator involves disconnecting hoses, transmission cooler lines, and the cooling fan assembly before the unit can be swapped.
Are there any recalls on the 2011-2017 Buick Regal radiator?

No, there are no specific recalls issued by the NHTSA for the radiator on the 2011-2017 Buick Regal.

Can I replace the radiator myself?

Yes, if you have moderate mechanical skills and the right tools. The job involves draining the cooling system, disconnecting hoses and transmission cooler lines, removing the cooling fans, and then swapping the radiator. It can take several hours. 🎬 See this step-by-step radiator replacement walkthrough for Buick engines The most critical step is properly bleeding the air out of the system 🎬 Watch: How to bleed air out of your Regal's cooling system after you refill it with new coolant.

What type of coolant does the 2011-2017 Buick Regal use?

This generation of Buick Regal requires a DEX-COOL compatible coolant. It is typically orange or pink. Always use the recommended type to prevent corrosion and damage to the cooling system.

Should I replace the radiator hoses at the same time?

Yes, it is highly recommended. The hoses are wear-and-tear items made of rubber and are inexpensive. Replacing them at the same time as the radiator is a smart preventative measure and saves you from paying for the same labor twice down the road.

How to FIND A Coolant Leak (DIY) AND The 5 Most Likely Coolant Leak Areas!
How to FIND A Coolant Leak (DIY) AND The 5 Most Likely Coolant Leak Areas!
How To Find Any Leak From Your Cooling System
How To Find Any Leak From Your Cooling System
Replacing Radiator on Chevy or Buick 4 cylinder turbo engine  Malibu, Cruz, Encore
Replacing Radiator on Chevy or Buick 4 cylinder turbo engine Malibu, Cruz, Encore
Bleeding Air out of the Regal
Bleeding Air out of the Regal
Learn How To Bleed Air Out Of Your Car's Cooling System With This Quick And Easy Diy Method.
Learn How To Bleed Air Out Of Your Car's Cooling System With This Quick And Easy Diy Method.

Technical Specifications

OEM Part Numbers: 13241729

The radiator for the 2011-2017 Buick Regal is a crossflow design, typically made with an aluminum core and plastic tanks. It includes a transmission oil cooler. Core dimensions and hose placement will vary slightly depending on the engine (2.0L Turbo vs. 2.4L).

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 May 31, 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 Radiator for:
  • Buick Regal: 2011201220132014201520162017
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