A Guide to Replacing Engine Mounts on the 2004-2013 INFINITI QX56
Stop the excessive vibration and clunking noises by choosing the right replacement engine mount for your QX56's V8 engine.
- Verify your vehicle's generation (2004-2010 or 2011-2013) before ordering, as the mounts are not interchangeable.
- For best results and a smooth ride, choose an OEM or premium aftermarket (Beck Arnley) hydraulic mount; economy brands may increase cabin vibration.
- A single 'thunk' noise on the first start-up of the day can be normal; don't replace mounts for this reason alone.
- Replacing mounts is a moderately difficult DIY job that requires safely supporting the engine.
Two Generations, Two Different Mounts
Before you buy, it's critical to know that the 2004-2013 INFINITI QX56 spans two distinct vehicle generations, and their engine mounts are not interchangeable.
- First Generation (2004-2010): This QX56 is based on the Nissan Armada and Titan platform (JA60).
- Second Generation (2011-2013): This QX56 is a completely redesigned vehicle (Y62 platform) and shares parts with the later QX80.
Always verify the part fits your specific model year before ordering.
Symptoms of a Failing Engine Mount
A bad engine mount makes its presence known through noise and vibration. Here’s what to look and listen for:
- Excessive Vibration: This is the most common symptom. You'll feel a deep vibration through the steering wheel, floor, and seats, especially when the vehicle is idling in gear (Drive or Reverse).
- Loud Noises: A distinct "clunk" or "bang" when you accelerate, brake, or shift from Park into Drive or Reverse is a classic sign. This is the sound of the engine moving excessively and hitting its limits.
- Visible Engine Movement: If you have a helper, you can observe the engine while they shift the car from Drive to Reverse with the brake applied. If the engine jumps or lurches significantly, the mounts are likely worn out.
A Note on "Normal" Noises (TSB NTB14-060c)
Nissan/INFINITI released a Technical Service Bulletin (TSB) that applies to these platforms. It states that a single "thunk" noise during the first few accelerations of the day can be a normal characteristic of the mount design. This is different from the repeated clunking of a truly failed mount. Do not replace your mounts based only on this single startup noise.
Choosing the Right Aftermarket Engine Mount
When it comes to engine mounts for the QX56, the quality difference between brands directly impacts ride comfort. The original mounts are hydraulic (fluid-filled) to absorb the V8's vibrations. Cheaper aftermarket mounts are often just solid rubber.
Premium Aftermarket (OEM-Equivalent Quality)
Beck Arnley: This brand specializes in parts for imported vehicles and focuses on matching the original factory specifications. If the original mount was hydraulic, a Beck Arnley replacement is likely to be hydraulic as well, offering the best defense against cabin vibration. For a heavy, luxury SUV like the QX56, choosing a brand that replicates the original design is highly recommended for maintaining a smooth ride.
Standard Aftermarket (Economy)
Anchor, DEA, Westar: These brands provide a more affordable solution. However, they are often made of solid rubber instead of being hydraulic. While they will secure the engine properly, they will not dampen vibrations as effectively as a fluid-filled mount. Owners who install these often report a noticeable increase in vibration at idle. If your priority is lowest cost and you can tolerate more vibration, these are viable options.
Pro Tip: OEM vs. Aftermarket
For engine mounts, you truly get what you pay for. Using a cheap, solid rubber mount on a vehicle designed for a hydraulic one will almost always result in more noticeable cabin vibration. For the QX56, spending more on an OEM or a quality OE-style aftermarket mount like Beck Arnley is often worth the cost to preserve the vehicle's smooth, luxury feel.
Cost of Replacing INFINITI QX56 Engine Mounts
| Item | Estimated Cost |
|---|---|
| New OEM Engine Mount (1) | $160 - $330 |
| New Aftermarket Engine Mount (1) | $44 - $95 |
| Shop Labor (Pair) | $240 - $450 |
| Total Professional Replacement (Aftermarket) | $330 - $640 |
| Total Professional Replacement (OEM) | $560 - $1110 |
Cost estimates are based on a pair of mounts and national averages. Prices can vary by location and vehicle specifics.
Frequently Asked Questions (FAQ)
Is it okay to replace only one engine mount?
It is highly recommended to replace engine mounts in pairs (left and right). They wear at a similar rate, and if one has failed, the other is likely not far behind. Replacing only one can put extra stress on the new mount and the remaining old one, leading to premature failure.
Is an OEM or hydraulic mount really worth the extra cost?
For the INFINITI QX56, yes. The primary purpose of a luxury SUV is a comfortable, quiet ride. A cheap, solid rubber mount will hold the engine in place, but it will transmit significantly more vibration into the cabin, making the vehicle feel rougher and louder, especially at idle.
What is the main difference between 2004-2010 and 2011-2013 QX56 mounts?
They are for two completely different vehicle platforms. The 2004-2010 model shares its chassis with the Nissan Titan, while the 2011-2013 model is a newer, global platform. The mounting points, shape, and design are physically different and cannot be interchanged.
Can I drive with a bad engine mount?
You can, but it's not recommended for long. The excessive engine movement can put stress on hoses, electrical wiring, and exhaust components, potentially leading to more expensive repairs down the road.
Technical Specifications
OEM Part Numbers: 11220-7S000 (Example for 2004-2010 Gen 1) 11210-1LA2B (Example for 2011-2013 Gen 2, Right) 11220-1LA2B (Example for 2011-2013 Gen 2, Left)
The 2004-2013 INFINITI QX56 uses two main engine mounts. Original equipment and premium aftermarket mounts are typically fluid-filled (hydraulic) to dampen vibration from the 5.6L V8 engine. Economy aftermarket versions are often solid rubber.
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.
- INFINITI QX56:
- 🛍️ Shop This Part
- Two Generations, Two Different Mounts
- Symptoms of a Failing Engine Mount
- A Note on "Normal" Noises (TSB NTB14-060c)
- Choosing the Right Aftermarket Engine Mount
- Premium Aftermarket (OEM-Equivalent Quality)
- Standard Aftermarket (Economy)
- Pro Tip: OEM vs. Aftermarket
- Cost of Replacing INFINITI QX56 Engine Mounts
- Frequently Asked Questions (FAQ)
- 🎟️ Get 5% Off