A Guide to Replacing Engine Mounts on the 2004-2011 Volvo S80
If your Volvo S80 is vibrating excessively or making clunking noises, it might be time for new engine mounts.
- Prioritize OEM-equivalent brands like Corteco, Febi, or Genuine Volvo for best results and to avoid vibration issues.
- Symptoms include excessive vibration at idle and loud clunking noises during acceleration or shifting.
- A 2008 S80 V8 recall exists for engine mount bolts; verify your vehicle is not affected.
- Replacing the upper torque mount is a common and relatively easy first step to address clunking noises.
Understanding Engine Mounts in Your S80
Your 2004-2011 Volvo S80 has several engine mounts, not just one. These typically include a right-side engine mount, a transmission mount, an upper torque rod (or strut), and a lower torque mount. The upper and lower torque mounts are very common failure points and often the source of clunking noises. The main mounts are responsible for bearing the engine's weight and absorbing most of the vibrations. It's important to note that the 2004-2006 S80 (P2 platform) and the 2007-2011 S80 (P3 platform) may have different mount designs, so always verify the part for your specific year and engine.
Symptoms of Failing Engine Mounts
When engine mounts wear out, the signs are usually noticeable. The rubber can crack, dry out from engine heat, or tear completely, leading to a variety of symptoms.
- Excessive Vibration: This is the most common symptom. You might feel a strong vibration in the steering wheel or through the cabin, especially when the car is idling or stopped in gear.
- Clunking or Thudding Noises: Loud clunks from the engine bay when you accelerate, brake, or shift between Drive and Reverse are a strong indicator of a failed mount. This is the sound of the engine moving and hitting other components.
- Visible Engine Movement: If you have an assistant put the car in gear and gently apply the throttle (with the brakes held firmly), you might see the engine lift or shift more than an inch, which points to a bad mount. 🎬 Watch this video to help locate and identify bad mounts.
Known Issues: Recall for 2008 S80 V8
There was a safety recall (NHTSA Campaign ID: 08V206000, Volvo Recall #197) for a small number of 2008 Volvo S80 models equipped with the V8 engine. These vehicles may have been built with incorrect, overly long bolts for the engine mount bracket, which could lead to a lack of clamping force. In a worst-case scenario, the bracket could break, causing the engine to contact the sub-frame and potentially stall. While this recall affected a limited number of vehicles, owners of 2008 V8 models should ensure this has been addressed by a dealer.
🎬 See a walkthrough for replacing V8 upper and lower mounts.Choosing the Right Aftermarket Engine Mount
When it comes to engine mounts for a Volvo, quality matters significantly. The rubber's ability to absorb vibration is key to maintaining the car's comfortable ride. Cheaper aftermarket mounts are known to fail quickly or cause more vibrations than the worn-out original part.
Brand Quality Tiers
- Premium (OEM-Equivalent): Brands like Genuine Volvo, Corteco, Febi, and Lemförder are often the original equipment manufacturers (OEM) for Volvo. Choosing these brands is the safest bet for a perfect fit, proper vibration damping, and long life. Forum users widely recommend sticking with these brands, even if they cost more, to avoid doing the job twice.
- Quality Aftermarket: Brands such as Beck Arnley and CRP (Rein) often provide parts that meet OE specifications and can be a reliable alternative. Beck Arnley is known for sourcing parts that match the factory dimensions for European vehicles.
- Budget Options: Brands like Anchor, DEA, URO Parts, and Westar offer more affordable mounts. While tempting, these are often the parts that owners report cause vibration issues or have a short lifespan. They may be suitable for a car you don't plan to keep long-term, but for a daily driver, investing in a higher-quality mount is recommended.
Pro Tip: The upper torque mount (the "dog bone" mount on top of the engine) is a frequent failure item and relatively easy to replace. If you're on a budget, you can start by replacing this mount with a quality brand, as it often causes the most noticeable clunking.
🎬 Follow this guide to replace your upper and lower mounts.Replacement Cost
The cost to replace engine mounts varies depending on which mounts are being replaced, the brand of parts chosen, and your local shop's labor rates.
| Item | Estimated Cost |
|---|---|
| New Aftermarket Mounts (Parts Only) | $46 - $300 per mount |
| Shop Labor | $200 - $500+ |
| Total Estimated Cost | $250 - $800+ |
Note: Prices are estimates and can vary. Replacing all mounts at once will be more expensive but can save on labor in the long run.
Frequently Asked Questions
Can I replace just the one broken mount?
Yes, but it's often a good idea to replace them in pairs or as a set. When one mount fails, it puts extra stress on the others, which can cause them to fail sooner. If you replace only the broken one, you may find yourself doing the job again for a different mount shortly after.
Is this a difficult DIY job?
It depends on the mount. The upper torque mount is generally easy for a DIY mechanic. However, the main engine and transmission mounts require supporting the engine with a jack and a block of wood, and access can be tight. If you are not comfortable supporting the engine and working in tight spaces, it's best to leave this job to a professional.
What are the vacuum-operated mounts?
On some S80 models, the main front and rear mounts are connected to the engine's vacuum system. This allows the car's computer to change the stiffness of the mounts to control vibrations at different engine speeds. If you replace these, ensure the new mounts are also vacuum-operated and that the lines are reconnected properly. A leak in this system can affect turbo operation on some models.
Why shouldn't I just buy the cheapest mount available?
The primary job of an engine mount in a luxury car like the S80 is to control vibration. Cheap aftermarket mounts often use harder rubber compounds that don't absorb vibration well, leading to a rougher, noisier ride than you had before the repair. They also tend to fail much faster.
Helpful Videos
Technical Specifications
OEM Part Numbers: 31262448 30645745 30778951 30680750 8671633 31670126
The 2004-2011 Volvo S80 uses a system of multiple mounts, including a right engine mount, a transmission mount, and upper and lower torque struts. Some models feature vacuum-assisted hydraulic mounts to actively dampen vibration. The upper torque rod is a common failure point. The 2004-2006 (P2 platform) and 2007-2011 (P3 platform) models may use different 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.
- Volvo S80: