A Guide to Replacing the HVAC Heater Hose on Your 2011-2017 Buick Regal
Keep your cabin warm and your engine safe by understanding heater hose replacement for your Regal.
- Heater hose failure is common due to age; there are no major recalls for this part on the 2011-2017 Regal.
- Symptoms include a sweet coolant smell, visible leaks near the firewall, and a lack of cabin heat.
- Always verify your engine (2.4L or 2.0L Turbo) before ordering, as the hoses are different.
- Premium aftermarket brands like Gates, Dayco, and Continental offer reliable, cost-effective alternatives to OEM parts.
Is Your Buick Regal's Heater Hose Failing?
Heater hoses are simple parts, but they live in a tough environment of high heat and pressure. Over time, the rubber can break down. When a heater hose fails on your 2011-2017 Regal, the signs are usually obvious. Ignoring them can lead to bigger problems, like engine overheating.
Key Symptoms of a Bad Heater Hose:
- Sweet Smell: The most common sign is the distinct, sweet smell of engine coolant. You might notice it inside the cabin or outside the car near the front. 🎬 Watch: A simple guide to finding your coolant leak.
- Visible Coolant Leaks: You may see puddles of orange or green fluid under your car, especially near the firewall (the wall between the engine and the passenger area). You might also see coolant dripping or sprayed around the back of the engine.
- No Cabin Heat: If a hose is clogged or leaking badly, not enough hot coolant will reach the heater core, leaving you with cold air from the vents even when the heat is on.
- Engine Overheating: A significant leak from a heater hose will cause a loss of coolant. If the coolant level gets too low, your engine can overheat, which can cause serious and expensive damage.
- Foggy Interior Windows: If a hose connection at the heater core is leaking, you might notice a greasy film or fog on the inside of your windshield that is hard to wipe away.
A Note on Recalls and Service Bulletins
Our research found no specific recalls or Technical Service Bulletins (TSBs) from GM or NHTSA for HVAC heater hose failures on the 2011-2017 Buick Regal. Problems with these hoses are typically due to normal wear and tear over time.
Choosing the Right Aftermarket Heater Hose
When buying a replacement heater hose, you have a few quality tiers to choose from. For a part like this, you don't always need to buy the expensive OEM part from the dealer. A quality aftermarket part can be just as good, or sometimes even better.
Pro Tip: Check Your Engine!
The 2011-2017 Buick Regal came with different engines, most commonly the 2.4L and the 2.0L Turbo. The heater hoses are different for each engine. Always verify your engine size before ordering to ensure you get the correct part.
Aftermarket Brand Tiers
- Premium Aftermarket (Gates, Continental, Dayco): These brands are major OEM suppliers and have a strong reputation for quality. Their hoses are made from high-quality EPDM rubber that meets or exceeds OEM specifications. For the Regal, a hose from one of these brands offers the best balance of quality and price.
- OEM Supplier (ACDelco): ACDelco is GM's official parts brand. While the quality is excellent, you are often paying more for the name. Sometimes, the ACDelco part is made by Gates or Dayco and simply put in a different box. If the price is similar to premium aftermarket, it's a great choice, but don't feel you have to pay a large premium.
- Standard Aftermarket: This includes various other brands that offer a direct fit. While often the cheapest option, quality can be inconsistent. For a critical part that holds hot, pressurized coolant, it's usually worth spending a little more for a premium brand.
How Much Does Buick Regal Heater Hose Replacement Cost?
The cost to replace a heater hose can vary. Doing it yourself can save a lot of money on labor. The parts themselves are not very expensive.
| Part or Service | Estimated Cost |
|---|---|
| New Aftermarket Heater Hose Assembly | $18 - $114 |
| New OEM Heater Hose Assembly | $60 - $350+ |
| Shop Labor | $102 - $150 |
| Total Professional Replacement | $162 - $500+ |
Cost estimates are based on a range of available parts and national labor averages. The high OEM part cost reflects complex assemblies that may be required for certain engine types.
Frequently Asked Questions (FAQ)
Can I replace just one heater hose?
Yes, but it's often a good idea to replace them in pairs. Both hoses have been exposed to the same heat and age, so if one has failed, the other may not be far behind. Since you have to drain the coolant anyway, replacing both at the same time can save you from doing the job twice.
Is replacing a heater hose a difficult DIY job?
For a moderately experienced DIYer, this job is feasible. It has an intermediate difficulty. The main challenges are reaching the hose clamps, which are often in tight spaces against the firewall, and properly refilling and bleeding the air out of the cooling system afterward.
🎬 Watch: How to bleed air from your Ecotec cooling system.What kind of coolant do I need for my Buick Regal?
The 2011-2017 Buick Regal uses a specific type of coolant called DEX-COOL. It is usually orange or pink. Do not mix it with other types of coolant (like the traditional green type), as this can cause damage to your cooling system.
Why are some heater hoses sold as 'assemblies'?
Many modern heater hoses are not just simple rubber tubes. They are often molded into specific shapes to fit around other engine parts and may come with pre-installed plastic connectors, T-fittings, or brackets. For your Regal, it is crucial to buy the correct molded assembly for a leak-free fit.
🎬 See how to easily remove those tricky GM quick-connect fittings.Helpful Videos
Technical Specifications
OEM Part Numbers: 13220141 13220136 9047305 9047309 23479341
Hoses are typically molded EPDM rubber assemblies, sometimes including plastic quick-connect fittings, T-junctions, or flow restrictors. Inlet and outlet hoses are distinct parts. Part numbers and design vary significantly between the 2.4L and 2.0L Turbo engines.
We Have This Part in Stock
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.
- Buick Regal:
- 🎬 Helpful Videos
- 🛍️ Shop This Part
- Is Your Buick Regal's Heater Hose Failing?
- Key Symptoms of a Bad Heater Hose:
- A Note on Recalls and Service Bulletins
- Choosing the Right Aftermarket Heater Hose
- Pro Tip: Check Your Engine!
- Aftermarket Brand Tiers
- How Much Does Buick Regal Heater Hose Replacement Cost?
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off