Engine mounts (or "mounts") in cars Nissan AD - critical elements that dampen vibrations of the power unit and prevent it from moving when driving. The wear of these parts often goes unnoticed until serious symptoms appear: from increased shaking at idle to impacts in the engine compartment when starting or braking. Owners AD (especially with engines SR20DE, GA16DE or QR25DE) encounter this problem more often than it seems - and ignoring the signals can lead to damage to the transmission or even the frame.

In this article we will look at how to accurately diagnose faulty supports on Nissan AD, which models of pillows are suitable for replacement (original vs analogues), and we will give step by step instructions with nuances for self-repair. We will pay special attention A typical mistake when installing a new support is incorrect tightening of the bolts, which reduces the service life of the part by 2-3 times. If you notice any of the symptoms listed below, checking your supports should be a priority.

Signs of faulty engine mounts Nissan AD

The first signs of pillow wear are often attributed to “car features” or problems with the chassis. However there is 5 Key Symptoms, which directly point to the supports:

  • 🔊 Impacts to the front of the body when suddenly starting, braking or changing gears (especially with automatic transmission). The sound is similar to a metallic knock coming from under the hood.
  • 🌀 Vibration on the steering wheel and body at idle speed, which increases under load (for example, when the air conditioner is turned on). Often accompanied by a “twitching” of the gearshift lever.
  • 🚗 Uneven acceleration: The car “nods” when accelerating, as if the engine is “stumbling.”
  • 🔧 Visible cracks or tears on the rubber part of the support (if you lift the hood and inspect the part).
  • 🛑 Motor offset: When the hood is open, it is noticeable that the engine “falls” to one side or sags.

On Nissan AD with a mileage of more than 150 thousand km most often fail right and rear supports - they experience maximum load when moving. For example, on models with SR20DE The rear cushion is attached to the gearbox and suffers from torque. If you ignore the problem, vibrations will be transmitted to the transmission, which will lead to wear on the shafts or even cracks in the gearbox housing.

⚠️ Attention: On vehicles with automatic transmission, worn bearings can cause jerks when changing gears - this is due to the fact that the engine is displaced and disrupts the operation of the torque converter. If you notice this, check your pillows before visiting the service at the checkpoint!
📊 How often do you check the condition of the engine mounts?
  • Never checked
  • Once every 50 thousand km
  • Only when symptoms appear
  • I inspect it myself every 10 thousand km

What engine mounts are on Nissan AD?

On Nissan AD (depending on the year of manufacture and engine type) are installed 3 or 4 supports:

  • 🔴 Right support (passenger side) - attached to the side member and cylinder block. Most often it fails first.
  • 🟢 Left support (driver's side) - connected to a bracket on the body.
  • 🔵 Rear support — attached to the gearbox (manual and automatic transmissions have different part numbers!).
  • ⚪ Upper support (if any) - installed on some modifications with QR25DE.

Original supports from Nissan have articles like 11230-XXXX (where XXXX is the model code). For example, for AD with SR20DE the right support goes under the number 11230-4M000, and the back - 11230-4M010. However, the originals are expensive (from 5 to 15 thousand rubles per piece), so many choose analogues from Febi, Sidem or GMB. Important: check when purchasing rubber hardness - cheap pillows often “tanner” in the cold or crack after 20 thousand km.

Support type Original article Popular analogues Average price, rub.
Right (SR20DE) 11230-4M000 Febi 22366, Sidem 80334 3 500–8 000
Left (GA16DE) 11230-5M000 GMB 620-1150, Corteco 11023001 4 000–9 500
Rear (automatic transmission, QR25DE) 11230-4M010 Sidem 80335, Febi 22367 5 000–12 000
Top (optional) 11230-4M020 GMB 620-1160 6 000–14 000

When choosing an analogue, pay attention to bushing material: Quality supports use polyurethane or reinforced rubber. Cheap pillows with porous rubber “sag” within a year. Also check the kit - some manufacturers do not include mounting bolts in the kit, but original bolts Nissan often “stick” and break during dismantling.

How to distinguish a fake support from the original?

Original supports Nissan have:

- Manufacturer's logo embossed on the metal case (not a sticker!).

- Rubber with a uniform structure without pores or cracks.

- Bolts with anti-corrosion coating (often blue or black painted).

- Packaging with a hologram and an article that matches the catalogue.

Engine mount diagnostics: step-by-step instructions

Checking the supports for Nissan AD You can do it yourself without a lift. You will need: a flashlight, a pry bar (or a long screwdriver) and an assistant. Follow the algorithm:

  1. Visual inspection. Open the hood and inspect the rubber parts of the supports for cracks, tears, or separation from the metal. Please note oil smudges — they corrode the rubber.
  2. Checking the backlash. Have an assistant engage 1st gear and accelerate slightly while you observe the engine shifting. If the motor "bounces" or moves more than 1-2 cm, the mounts are worn.
  3. Sway test. Grasp the engine (for example, the oil filler neck) and try to rock it up and down and left and right. A play of more than 5 mm is a sign of a malfunction.
  4. Check with a mount. Pry up the support with a pry bar and see if the rubber part comes away from the metal body. If there is a gap, the pillow requires replacement.

For a more accurate diagnosis of the rear support (especially on an automatic transmission), you will need an inspection hole or overpass. Please note mounting bracket - it is often deformed from the load, and even a new support will not solve the problem without replacing the bracket.

- Condition of the mounting bolts (are the edges torn off?)

- Integrity of the brackets (are there any cracks or deformations?)

- Oil level in the gearbox (leaks can damage the rubber support)

- Condition of adjacent parts (for example, CV joint boots)

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⚠️ Attention: On Nissan AD with engine QR25DE the rear support is often “eaten up” by vibrations from a faulty crankshaft support bearing. If vibrations remain after replacing the cushion, check the bearing!

Replacing the engine mount with Nissan AD: step-by-step master class

You can replace the supports yourself, but there are some nuances. For example, right support on SR20DE it is easier to change by removing the wheel and protection, and for rear You will need a jack or lift. Let's look at the process using an example right support:

Required tools:

  • 🔧 Set of sockets (10–17 mm) and extension.
  • 🔨 Socket wrench for support mounting bolts.
  • 🔩 Jack and wooden spacer (to raise the engine).
  • 🧴 WD-40 or a similar composition (bolts often stick).
  • 🔦 Flashlight for inspecting fasteners.

Step by step instructions:

  1. Preparation. Place the car on a level surface, tighten the handbrake and remove the negative terminal from the battery. For safety, place chocks under the rear wheels.
  2. Dismantling the protection. Remove the plastic engine protection (if equipped) and the right side of the mudguard.
  3. Jacking up the engine. Place a wooden board between the jack and the oil pan (so as not to damage it!) and slightly lift the engine, removing the load from the support.
  4. Unscrewing the support. Unscrew the bolts securing the support to the side member (usually 3-4 bolts of 14 mm) and to the engine (2 bolts of 17 mm). If the bolts don't work, treat them with WD-40 and wait 10 minutes.
  5. Installation of a new support. Before installation, clean the mounting areas from dirt. Install a new pillow, but do not tighten the bolts completely — first lower the engine into place, then tighten the fastenings with a force of 50–60 Nm.
  6. Check. Start the engine and check for vibrations. Drive at low speed, braking sharply - there should be no shocks.

For replacement rear support For automatic transmissions, you will need to remove the transmission pan and partially drain the oil. It is better to work with an assistant here, since you need to simultaneously support the gearbox and unscrew the bolts. Critical mistake: many people forget to check the condition of the bracket for attaching the support to the gearbox - if it is deformed, the new cushion will last no more than 10 thousand km.

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Before installing a new support, lubricate the bolts graphite lubricant - this will prevent them from sticking during the next dismantling.

Typical mistakes when replacing supports and how to avoid them

Even experienced craftsmen make mistakes that shorten the service life of supports or lead to new breakdowns. Here TOP-5 misses and how to prevent them:

  • 🔧 Incorrect bolt tightening. The supports must tighten only under load (i.e. when the engine is on mounts rather than hanging on a jack). Otherwise, the rubber will deform and the support will quickly fail.
  • 🛠️ Ignoring brackets. If the bracket that the mount is attached to is bent or cracked, the new mount will not be able to absorb the vibrations. Check its condition!
  • 🔩 Using old bolts. Support bolts are disposable! When dismantled, they are deformed, and repeated use leads to weakening of the fastening.
  • 🌀 Failure to follow the replacement procedure. On Nissan AD first change the right and left supports, and then the rear. If you start from the rear, the engine may move and the front airbags will be difficult to install.
  • 🚗 Neglect of alignment. After replacement, you need to check that the engine is level - without distortions. Otherwise, the load on the supports will be distributed unevenly.

Another common problem is purchasing supports not by article number, but by “external similarity”. For example, pillows for Nissan Primera P12 externally similar to supports for AD, but have a different rubber hardness. Always check the catalogs Nissan or use a VIN decoder for an accurate selection.

1. Wheel alignment condition (engine displacement could throw off the wheel alignment angles).

2. Integrity of the torque converter (on automatic transmission).

3. Balancing the driveshaft (on all-wheel drive AD).-->

Cost of replacing engine mounts at a service center vs doing it yourself

The cost of replacing supports in the service depends on the region and type of service station. The average prices in Russia are as follows:

Type of work Cost, rub. Opening hours
Replacing one support (right/left) 1 500–3 000 1–1.5 hours
Replacing the rear support (automatic transmission) 2 500–4 500 2–3 hours
Replacement of all supports (set) 5 000–8 000 4–5 hours
Vibration diagnostics (if the cause is unclear) 1 000–2 000 30–60 minutes

Self-replacement will only cost the cost of spare parts (from 3,500 rubles for one support) and tools (if they are not available). However, keep in mind that the rear support on an automatic transmission may require partial oil drain (about 1–1.5 l), as well as a special wrench for the box bolts.

Saving on the service is justified if you have:

  • 🔧 Experience working with cars (at least minimal).
  • 🚗 Lift or inspection hole (for rear support).
  • 🕒 Time and patience (the first replacement may take 5-6 hours).

If at least one item is missing, it is better to contact the service. For example, on Nissan AD with QR25DE the rear support is mounted in a hard-to-reach place, and without experience, you can damage the gearbox.

FAQ: Frequently asked questions about engine mounts Nissan AD

❓ Is it possible to drive with a faulty engine mount?

Short term (1-2 weeks) - yes, but this leads to:

  • Accelerated wear of the gearbox (especially automatic transmission).
  • Damage to the radiator or fan (if the engine moves forward).
  • Cracks in the body (at the places where the supports are attached).

If the support is completely destroyed (the rubber has separated from the metal), the engine may turn around with a sudden start, which will lead to breakage of pipes or wiring.

❓ How often should the supports be changed? Nissan AD?

The service life of supports depends on operating conditions:

  • In the city (smooth ride) - 100–150 thousand km.
  • When driving aggressively or off-road - 60–80 thousand km.
  • On cars with HBO - 20–30% less (vibrations from detonation destroy rubber).

It is recommended to check the condition of the supports every 50 thousand km or when vibrations occur.

❓ Which supports are better to install: original or analogues?

Original supports Nissan more durable, but more expensive. Analogues can be used if:

  • Brand verified (Febi, Sidem, GMB).
  • The rubber is hard, without pores (check by touch).
  • New bolts are included.

Avoid cheap pillows without a brand - they often “skin” in the cold or crack after 10 thousand km.

❓ Is it necessary to do a wheel alignment after replacing the supports?

There is no direct connection between the supports and wheel alignment, but:

  • If the engine moved too much, it could affect the suspension geometry.
  • When replacing the front supports, sometimes the wheel alignment angles get lost (if the car was jacked unevenly).

It is recommended to check the wheel alignment if, after replacing the supports, the car leads to the side or tires wear unevenly.

❓ Why did vibrations remain after replacing the supports?

Possible reasons:

  • Incorrect tightening of bolts (supports must be tightened under load).
  • Worn mounting brackets (they also need to be replaced).
  • Problems with the gearbox (worn bearings, cardan imbalance).
  • Malfunction crankshaft support bearing (typical for QR25DE).

If vibrations appear immediately after replacement, check engine alignment - perhaps it stands crooked.