A Comprehensive Guide to 1984-1988 Buick Regal Engine Mounts
Stop excessive engine vibration and clunking noises by choosing the right replacement engine mount for your Regal.
- For most Regals, choose an OEM-style rubber mount like ACDelco for a smooth, factory ride.
- Turbo Regal (Grand National, T-Type) owners should choose between durable polyurethane for performance (with more vibration) or high-quality rubber for street comfort.
- Avoid the cheapest economy brands if you are sensitive to vibration or want long-term durability, as owner reviews are poor.
- Symptoms include heavy vibration at idle and loud clunks when accelerating or shifting gears.
Signs of a Failing Engine Mount in Your Regal
Engine mounts wear out over time from constant heat, vibration, and oil exposure. When they fail, the symptoms are usually hard to ignore. A common first sign is a noticeable increase in vibration felt in the steering wheel, floor, or seats, especially when the car is idling in gear. You might also hear a distinct 'clunk' or 'thud' from the engine bay when you accelerate, decelerate, or shift between drive and reverse. In severe cases, you can physically see the engine move or lift excessively if an assistant revs the engine while the car is in park with the hood open.
Choosing the Right Aftermarket Mount
When shopping for a new engine mount for your 1984-1988 Regal, you'll find several brands offering different levels of quality and performance. They generally fall into three categories:
Economy Brands (Anchor, DEA, Westar)
These brands are the most affordable and widely available. While they can be a suitable choice for a standard, non-turbo Regal that is driven gently, owner feedback is very mixed. Many users in forums report issues with increased vibration, poor fitment, and a shorter lifespan compared to original parts. If budget is your primary concern, they will function, but don't expect the same smooth feel or durability as a higher-quality mount.
OEM-Style Quality (ACDelco)
ACDelco is GM's parts division and is generally considered the original equipment manufacturer or equivalent. These mounts are designed to restore the factory ride quality and vibration absorption. For most Regal owners, especially those with the standard V6 or V8 engines who want a smooth, quiet ride, an OEM-style rubber mount is the best choice. They provide the balance of engine control and comfort the car was designed for.
Performance Upgrade (Energy Suspension)
Energy Suspension specializes in polyurethane mounts, which are a significant upgrade in terms of strength and durability over the stock rubber design. These mounts drastically reduce engine movement, which can improve throttle response—a popular choice for high-performance Turbo Regals, Grand Nationals, and modified cars. However, there is a major trade-off: polyurethane transmits much more engine vibration and noise into the cabin. Many owners of street-driven cars find this increase in Noise, Vibration, and Harshness (NVH) to be unacceptable for daily driving.
Pro Tip for Turbo Owners
The powerful 3.8L Turbo V6 engine puts immense strain on the driver's side engine mount. If you have a Grand National, T-Type, or other Turbo Regal, consider using a high-quality OEM-style rubber mount or a performance polyurethane mount specifically on the driver's side to handle the torque, while you can use a standard mount on the passenger side.
Known Issues, Recalls, or TSBs
Searches of the National Highway Traffic Safety Administration (NHTSA) database and other technical resources show no specific recalls or Technical Service Bulletins (TSBs) for engine mount failure on the 1984-1988 Buick Regal. Failure is typically due to age and normal wear and tear.
Cost of Aftermarket Engine Mounts
| Brand Tier | Typical Price Range (Per Mount) |
|---|---|
| Economy (Anchor, DEA, Westar, Pioneer) | $17 - $40 |
| OEM-Style (ACDelco) | $45 - $80 |
| Performance Polyurethane (Energy Suspension) | $60 - $105 |
Frequently Asked Questions
Should I replace my mounts in pairs?
Yes, it is highly recommended. Replacing only one failed mount puts extra stress on the remaining old mount and the new part, which can lead to premature failure of both. For balanced performance and longevity, always replace the left and right engine mounts at the same time.
Should I choose rubber or polyurethane mounts?
This depends entirely on your car and how you use it. For a stock, daily-driven Regal, a quality rubber mount (like ACDelco) will provide the intended smooth and quiet ride. If you have a high-horsepower, modified Regal or a Grand National used for performance driving and can tolerate significant extra vibration, polyurethane is a more durable option that improves throttle response.
Can I install new engine mounts myself?
Yes, for a DIY mechanic with the right tools, this is a manageable job. The process involves supporting the engine from below with a floor jack and a block of wood, unbolting the old mount from the frame and engine block, and installing the new one. It typically takes about two hours and does not require removing major components, though access can be tight.
Will a bad engine mount cause other damage?
Yes, if left ignored. Excessive engine movement can strain and damage radiator hoses, wiring harnesses, and exhaust components. In extreme cases, the engine shifting can cause the accelerator linkage to bind or other components to make contact with the fan.
Technical Specifications
OEM Part Numbers: 25504647 1258718
Fits 1984, 1985, 1986, 1987, 1988 Buick Regal models. Mounts are specific to the left (driver) and right (passenger) side. Turbo V6 models have specific part numbers.
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:
- 🛍️ Shop This Part
- Signs of a Failing Engine Mount in Your Regal
- Choosing the Right Aftermarket Mount
- Economy Brands (Anchor, DEA, Westar)
- OEM-Style Quality (ACDelco)
- Performance Upgrade (Energy Suspension)
- Pro Tip for Turbo Owners
- Known Issues, Recalls, or TSBs
- Cost of Aftermarket Engine Mounts
- Frequently Asked Questions
- 🎟️ Get 5% Off