Views: 0 Author: Site Editor Publish Time: 2026-06-24 Origin: Site
Quick answer:
Nissan engine mounts secure the engine and transmission to the chassis while absorbing vibration. Most Nissan models—from the Altima with the QR25DE engine to the Serena with the MR20DD—use three to four mounts. Common failure signs include heavy vibration, clunking, and engine movement during acceleration.
If your Nissan suddenly feels rougher than it used to—shaking at idle, thumping when you shift into gear, or rattling over bumps—the problem often traces back to a small but critical component. The mounts holding your engine in place wear out over time, and when they do, the whole driving experience suffers.
This guide breaks down what these parts do, how to identify the right Nissan engine mounts for popular models like the Altima, X-Trail, and Serena, and how to read part numbers and engine codes so you order the correct fit the first time. You'll also find a quick reference table, failure symptoms, and answers to the questions buyers ask most.
An engine mount is a steel-and-rubber bracket that bolts the engine block (and often the transmission) to the vehicle's subframe. It performs two jobs at once. First, it holds the heavy powertrain firmly in position. Second, it absorbs the constant vibration a running engine produces, keeping that energy out of the cabin.
Quality matters here. Premium mounts from Kaiping Huilong Auto Parts Factory are built with 100% natural rubber and high-grade steel, designed as 1:1 replacements for original Nissan parts. Natural rubber resists hardening and cracking longer than cheaper synthetic blends, which directly affects how well a mount controls vibration over its lifespan.
Nissan uses specific engine codes and part numbers to match mounts to exact model variants. Getting these right prevents costly mistakes. Two engine families show up often across Nissan's lineup:
QR25DE — a 2.5L four-cylinder used in the Altima and X-Trail
MR20DD — a 2.0L direct-injection four-cylinder used in the Serena
Part numbers add another layer of precision. A code like 11210-8H310 identifies not just the model but the mount's exact position (front, rear, left, or right) and the transmission type it pairs with. Always cross-check both the engine code and position before buying.
The table below maps several common part numbers to their applicable models, engine codes, and mounting positions.
Part Number | Applicable Model | Engine Code | Position |
|---|---|---|---|
11210-8H310 | X-Trail T30 2.5L AT/MT | QR25DE | Right |
11332-JA00A | Altima L32HV | QR25DE | Rear |
11220-1V30A | Serena C26N 2.0L | MR20DD | Left |
Use this as a starting point, then confirm against your vehicle's VIN or existing part. Position and transmission details (AT versus MT) can change which mount fits your specific car.
A worn mount rarely fails silently. Drivers usually notice several symptoms building over weeks or months. If your engine mounting broken by age or stress, watch for these signs:
Excessive vibration at idle that you feel through the seat or steering wheel
Clunking or banging noises when shifting gears or accelerating
Visible engine movement when you rev the engine or pull away quickly
Misaligned components under the hood, caused by the engine sagging
Ignoring these symptoms puts extra stress on connected parts like hoses, belts, and the exhaust. What starts as a cheap mount replacement can snowball into a much larger repair bill if left unchecked.
Most engine mounts last around 60,000 to 100,000 miles, though driving conditions play a big role. Frequent stop-and-go traffic, rough roads, and aggressive driving all shorten their life. Heat and oil contamination also degrade rubber faster.
Huilong mounts carry a 60,000 km warranty and undergo rubber-property testing for stability and durability. That kind of testing matters because a mount's value comes down to how consistently the rubber performs under repeated load—not just how it looks when new.
Some Nissan parts are sold as complete mounts, while others are sold as bushings—the rubber insert inside a mount housing. Choose based on what has actually failed.
If the entire mount assembly is cracked, separated, or oil-soaked, replace the whole unit. If only the rubber bushing has worn while the steel housing stays solid, a bushing replacement can be the more economical fix. For most DIY situations, handling car engine mounts replacement as a full assembly swap is simpler and reduces the chance of a repeat repair.
Choose a full mount replacement if you want maximum reliability and you're unsure of the bushing condition. Choose a bushing-only repair if the housing is verified intact and you're managing cost on an older vehicle.
Matching the correct part number to your engine code and mount position is the single most important step in buying a Nissan engine mount. An Altima with a QR25DE needs a different part than a Serena with an MR20DD, even though both are Nissans. Quality construction—genuine natural rubber and tested steel—then determines how long that mount keeps your cabin quiet and your engine stable.
If you're ready to find the exact fit for your vehicle, browse the full Nissan catalog at Kaiping Huilong Auto Parts Factory or send your part number and VIN for a direct match recommendation.
How many engine mounts does a Nissan have?
Most Nissan vehicles use three to four mounts to secure the engine block and transmission to the subframe. The exact count depends on the model and drivetrain layout.
What's the difference between the QR25DE and MR20DD when ordering mounts?
The QR25DE is a 2.5L engine found in models like the Altima and X-Trail, while the MR20DD is a 2.0L unit used in the Serena. Because the engines differ in size and mounting layout, they require different part numbers—never assume a mount fits across both.
How much does a Nissan engine mount cost to replace?
Part prices vary by model and position, and labor depends on how accessible the mount is. Front and side mounts are often quicker to reach than rear mounts, which affects the total. Request a quote with your specific part number for accurate pricing.
Can I drive with a broken engine mount?
You can, but you shouldn't for long. A failed mount lets the engine shift around, which stresses nearby components and worsens vibration. Prompt replacement prevents secondary damage.
How do I find the right part number for my Nissan?
Check your existing mount for a stamped code, or match your VIN against a parts catalog. Confirm the engine code and mount position (front, rear, left, or right) before ordering to guarantee a correct fit.
