Replacement Parts


AutoZone Rewards℠

Join Today and Earn a $20 Reward When You Make 5 Purchases of $20 or More!

Tell Us More About Your Buick Regal. View all models

AutoZone carries hundreds of thousands of parts and accessories.

Select your Year, Make, Model and Engine to find those that fit your vehicle.

You take your Buick Regal to work and around town, proud of the style and comfort it provides while driving. However, if your winter drives are being clouded by a buildup of moisture on the inside of your windows, your heater core is in trouble. Replace it with a new Buick Regal heater core from AutoZone.

Show of 11  Results
  •  | Page 1 of 1 |  
  • Part Number: 98114
  • Part Number: 399088
  • Application: With A/C
  • Part Number: 399071
  • Application: With A/C
  • Part Number: 399092
  • Application: Without A/C
    With 8 cylinder engine
  • Part Number: 94545
  • Application: Without A/C
  • Part Number: 94488
  • Application: With A/C
    With 6 cylinder engine
  • Part Number: 398238
  • Part Number: 398361
  • Part Number: 98505
  • Notes: Naturally Aspirated. With 8 cylinder engine. With A/C.
  • Part Number: 90485
  • Notes: US or Canada model.
  • Part Number: 90016
  •  | Page 1 of 1 |  

Moisture builds up inside the windows when Regal heater cores leak fluid. You also experience a sweet smell in the cabin or a pool of fluid on the front passenger side floor. Faulty heater cores are at risk to blow up while you drive, releasing fumes into the cabin. Let AutoZone's helpful staff provide trustworthy advice to get you safely warm again. Providing the right products at the right prices, get your heater core replacement for Buick Regal at AutoZone and take advantage of Same Day Store Pickup.

Other Customers Also Viewed



Buy online and return core parts to the store to be refunded the price.
Core Parts Policy


On Orders $75 or Greater
and free shipping to APO, FPO, DPO addresses.
Get More Details


Buy Online, Return
Get More Details


Save time by buying online and picking up items in store.
Learn More

Payment Methods: