Nissan Almera N16 is a popular sedan that is still actively used on the roads of the CIS. One of the common problems with this model is oil leakage from the gearbox, and in 80% of cases the cause is a worn drive seal (or CV joint seal). If you ignore this malfunction, the consequences can cost a lot of money: from damage to the CV joint to complete failure of the gearbox.

In this article we will look at how to recognize the problem in time, what signs of oil seal wear should be wary and whether it is possible to replace it yourself. We will also compare original spare parts with analogues, evaluate the complexity of the work and give practical advice on extending the service life of the unit. If you are the owner Almera N16 with a manual or automatic transmission - this information will save you time and money.

Signs of a malfunction of the drive oil seal on Almera N16

The first and most obvious symptom is oil smudges on the inside of the wheel or near the axle shaft. However, the leak may be minor and easy to miss in the early stages. Pay attention to the following signals:

  • 🔴 Oil stains under the car from the drive shaft (especially after long-term parking). Gearbox oil has a characteristic reddish or brown tint.
  • 🔴 Crunching or clicking noise when turning - this is a sign that oil has gotten onto the CV joint and washed away the lubricant.
  • 🔴 The oil level in the gearbox drops for no apparent reason (check with a dipstick every 5–10 thousand km).
  • 🔴 Vibration or jerking during acceleration - a possible consequence of an imbalance due to oil getting on the discs or pads.

On Almera N16 with automatic transmission (RE4F03A) oil seal leakage can lead to overheating of the torque converter due to lack of oil, which can lead to costly repairs. On the mechanics (RS5F31A) the consequences are less critical, but also unpleasant: accelerated wear of synchronizers and bearings.

⚠️ Attention: If oil stains appear on the inside of the wheel rim or brake drum, this is a direct signal to replace the oil seal. Continued use will result in oil getting on the pads and loss of braking efficiency!

To confirm the diagnosis, it is enough to visually inspect the CV joint boot and the junction of the drive shaft with the gearbox. If there are traces of oil there, the oil seal needs to be replaced. On Almera N16 Most often the seal fails right drive, since it is more loaded due to its design features.

📊 How often do you check the oil level in the gearbox?
  • Every 5 thousand km
  • Every 10 thousand km
  • Only when problems arise
  • Never

What oil seals are installed on Almera N16: original vs analogues

On Nissan Almera N16 (2000–2006) two types of drive oil seals were installed depending on the type of gearbox:

  • 🔧 For manual transmission (RS5F31A) - oil seal with inner diameter 28 mm, external 47 mm, height 7 mm.
  • 🔧 For automatic transmission (RE4F03A) - oil seal with dimensions 32×52×7 mm.

Original spare parts from Nissan have articles:

Gearbox type Article Manufacturer Approximate price, ₽
Mechanics (right/left) 38340-4M000 Nissan 1 200–1 500
Automatic (right/left) 38340-31X00 Nissan 1 800–2 200
Mechanics (analogue) 314053 Corteco 400–600
Automatic (analog) 12610 SKF 700–900

Among analogues, brands that have proven themselves well are:

  • 🔹 Corteco (Germany) - optimal price/quality ratio.
  • 🔹 SKF (Sweden) - premium segment, a resource superior to the original.
  • 🔹 Elring (Germany) - reliable, but there are fakes.
  • 🔹 Victor Reinz (Germany) - often installed at service stations.
⚠️ Attention: When purchasing an oil seal, be sure to check it for elasticity! Counterfeits are often made of hard rubber, which cracks when installed. The original or a high-quality analogue should be easily compressed with your fingers without residual deformation.

If you are choosing between an original and an analogue, keep in mind that a high-quality non-original resource (for example, SKF or Corteco) often exceeds the service life of the factory seal. The main thing is to avoid cheap Chinese branded counterfeits NOK or Koyowhich are sold in markets.

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Before buying an oil seal, measure the old one with a caliper - sometimes even in the original packages you come across parts with inappropriate dimensions.

Tools and preparation for replacing the drive seal

Replacing the oil seal with Almera N16 requires removal of the drive shaft, so you can’t do without a pit or a lift. Minimum set of tools:

  • 🔧 Heads and keys at 10, 12, 14, 17, 19 mm.
  • 🔧 Socket wrench by 32 mm (for the hub nut).
  • 🔧 Mount or puller for CV joint.
  • 🔧 Torque wrench (for tightening the hub nut with a torque of 220–250 Nm).
  • 🔧 Hammer and mandrel for pressing the oil seal.
  • 🔧 Sealant (For example, Loctite 574 to fix the thread).

You will also need:

  • 🧴 Gearbox oil (to replace something lost during dismantling).
  • 🧴 Carburetor Cleaner or kerosene for washing the seat.
  • 🧴 New retaining ring (if the old one is deformed).

Before starting work:

Drive the car onto a pit or a lift|Remove the wheel and brake disc|Disconnect the steering tip|Drain some of the oil from the gearbox (if the level is high)|Prepare a container for draining the oil-->

If this is your first time doing such a repair, take photographs of the location of all fasteners and parts before dismantling. Pay special attention to:

  • 🔹 Position CV boot (so as not to twist during assembly).
  • 🔹 Labeling drive shaft (right/left, sometimes they differ in length).
  • 🔹 Condition wheel bearing - if there is any play, it should also be replaced.
What to do if the hub nut does not unscrew?

If the nut is stuck, use a penetrating lubricant (for example, WD-40 Specialist) and leave for 10–15 minutes. Then try to unscrew it using a wrench extension or an impact wrench. As a last resort, carefully heat the nut with a gas torch (do not overheat the wheel bearing!).

Step-by-step instructions for replacing the drive seal

Let's look at the process using an example right drive (for left-hand action the same, but the subframe may need to be removed).

Step 1: Removing the drive shaft

  1. Remove the wheel and brake disc.
  2. Unscrew the hub nut (you will need force or an impact wrench).
  3. Disconnect the tie rod and ball joint.
  4. Press the CV joint out of the hub using a pry bar.
  5. Remove the gearbox guard and disconnect the inner CV joint from the differential.

Step 2. Removing the old oil seal

After removing the drive, the oil seal can be removed using a screwdriver or a special puller. Be careful - do not damage the seat in the gearbox! Clean it of old oil and dirt.

Step 3. Installing a new oil seal

The new oil seal is pressed in only from the outside of the gearbox (don't mix up the side!). Use a mandrel of suitable diameter or an old oil seal as a guide. You cannot hit the oil seal directly with a hammer - only through the gasket!

Step 4. Assembly

Reinstall the drive shaft and tighten the hub nut to 220–250 Nm and reassemble everything in reverse order. After replacement, check the oil level in the gearbox and add if necessary.

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If, after replacing the oil seal, the leak resumes within 1,000 km, most likely it was installed crookedly or defective. Re-replacement is required!

Common replacement mistakes and how to avoid them

Even experienced technicians sometimes make mistakes that lead to repeated leaks or damage to the gearbox. Here are the most common:

  • ❌ Distortion of the oil seal during installation - leads to instant leakage. Always use a mandrel!
  • ❌ Damage to the seat at the checkpoint with sharp instruments. Clean it only with a soft cloth.
  • ❌ Using sealant on the oil seal — it should sit on rubber, not glue.
  • ❌ Hub nut loose - will lead to play and vibrations.
  • ❌ Forgot to check the CV joint boot - if it is torn, the oil will quickly reach the new oil seal.

Another typical problem is dirt getting into the gearbox when replacing. To avoid this:

  • 🔹 Close the gearbox hole with a clean rag immediately after removing the drive.
  • 🔹 Do not use compressed air for cleaning - it can drive dust inside.
  • 🔹 Wash parts only with kerosene or a special cleaner.
⚠️ Attention: If, after replacing the oil seal, hum or vibration when driving - you probably damaged the differential bearing or installed the drive shaft incorrectly. Stop immediately and check the assembly!

How much does it cost to replace a drive oil seal at a service station?

The cost of work depends on the region and type of checkpoint. The average prices in Russia are:

Type of work Manual transmission Automatic transmission
Replacing the oil seal (one side) 2 500–4 000 ₽ 3 500–5 500 ₽
Replacing seals on both sides 4 000–6 500 ₽ 6 000–9 000 ₽
Replacing the oil seal + gearbox oil 3 500–5 500 ₽ 5 000–8 000 ₽

On automatic transmission the work is more expensive due to the difficulty of accessing the oil seals and the risk of damage to the torque converter. If a leak is found on both sides, it is cheaper to replace both seals at once - many service stations offer a discount.

You can save money by purchasing spare parts yourself. For example, two oil seals Corteco will cost 800–1,200 rubles, and the work to install them will cost about 3,000 rubles. This is 2–3 times cheaper than buying original oil seals at a service station.

How to extend the life of the drive seal?

Oil seal service life Almera N16 depends not only on the quality of the part, but also on the operating conditions. The following measures will help avoid premature wear:

  • 🔧 Check the oil level in the gearbox - its deficiency accelerates the wear of the oil seal.
  • 🔧 Avoid abrupt starts - this increases the load on the drive shafts.
  • 🔧 Regularly inspect CV joint boots — their damage leads to dirt getting onto the oil seal.
  • 🔧 Wash the engine compartment at least once a year - salt and reagents destroy rubber.
  • 🔧 Use quality oil for checkpoints (for example, Nissan Matic S for automatic transmission or 75W-90 GL-4 for manual transmission).

If you often drive off-road or in high humidity conditions, treat the oil seal silicone grease (For example, Liqui Moly Silicon-Spray). This will protect the rubber from cracking and extend its service life by 20–30%.

It is also worth checking the condition gearbox breather - if it is clogged, excess pressure is created inside the box, which squeezes out the seals. On Almera N16 The breather is located on top of the gearbox and often gets clogged with dirt.

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After replacing the oil seal, avoid sudden acceleration and off-road driving for the first 100 km - this will help the new part “get in” and last longer.

FAQ: Frequently asked questions about Almera N16 drive oil seals

Is it possible to drive with the current drive seal?

Short-term (up to 1-2 weeks) - yes, but only if the oil level in the gearbox does not drop critically. However, ignoring the problem will lead to:

  • 🔴 Oil getting on the brake pads (loss of braking efficiency).
  • 🔴 Wear of the CV joint due to lubricant washing out.
  • 🔴 Overheating of the gearbox (especially on the automatic).

If the leak is strong, you can only move to the nearest service station using a tow truck or tow truck.

How to distinguish a drive oil seal leak from a gearbox oil seal leak?

Leak drive oil seal appears as oil marks on the inside of the wheel or near the axle shaft. Leak gearbox oil seal (for example, rear) leads to oil stains under the box or on the crankcase protection.

Also, the drive seal leaks only when the wheels rotate (for example, while driving), while the gearbox seal can “cry” even when parked.

Is it necessary to change the gearbox oil after replacing the oil seal?

Required if:

  • 🔹 The oil is old (it hasn’t been changed for more than 60 thousand km).
  • 🔹 Metal shavings are visible in the oil or it has turned black.
  • 🔹 When replacing the oil seal, dirt got into the gearbox.

For manual transmission Almera N16 oil recommended 75W-90 GL-4 (For example, Castrol Syntrans Transaxle or Motul Gear 300). For machine gun - only Nissan Matic S or its analogues (Idemitsu ATF Type-J).

Is it possible to replace the drive oil seal without removing the gearbox?

Yes, on Almera N16 this is possible since the oil seal is located in the hole in the gearbox flange. However, to do this you still have to:

  1. Remove the drive shaft.
  2. Remove the old oil seal.
  3. Press in a new one using a mandrel.

Removal of the gearbox is required only if its housing or bearings are damaged.

Which oil seal is better - original or analogue?

Original oil seals Nissan (38340-4M000 for manual transmission, 38340-31X00 for automatic transmission) are guaranteed to fit in size, but their service life does not always justify the price. High-quality analogues (SKF, Corteco) often last longer and cost less.

The main thing is to buy from trusted suppliers, since there are many counterfeits of well-known brands on the market. Before installation, check the oil seal for elasticity and absence of defects.