Nissan Almera N16 gearbox: design, problems and repairs

Nissan Almera N16 is a popular sedan from the early 2000s that is still found on the roads today due to its reliability. However, even time-tested models have weak points, and the gearbox is one of them. Owners often encounter jerks when switching, noise or oil leaks, especially after 150–200 thousand km. In this article we will look at which gearboxes were installed on Almera N16, how to diagnose and repair them, and also give practical advice on operation.

A special feature of this model is the variety of transmissions depending on the market and year of manufacture. Mechanics were installed on European versions RS5F31A and automatic RE4F03A, and for Asian ones - other modifications. We will focus on the most common options that are found in Russia and the CIS, and will reveal nuances that are not written about in standard manuals.

What gearboxes were installed on the Nissan Almera N16

On Almera N16 (2000–2006) three types of gearboxes were installed, the choice of which depended on the engine and configuration:

• 🔧 Manual 5-speed RS5F31A - the most common, was paired with motors QG15DE (1.5 l) and QG18DE (1.8 l). It has a simple design, but is sensitive to the quality of the oil.
• ⚙️ Automatic 4-speed RE4F03A - installed on version with QG18DE (114–126 hp). Reliable, but requires regular maintenance. Often suffers from wear on the torque converter.
• 🔄 Manual 6-speed (rare) — found on sports modifications for the Asian market. It is almost not represented in Russia.

Important: Almera N16 for Japan (model N16 Bluebird Sylphy) could be equipped with a CVT CVT, but such machines were not officially supplied to Europe and the CIS. If you are offered Almera N16 with a CVT - this is either a forgery of documents or a rare imported copy.

How to determine the type of gearbox on your car? Look under the hood: on a manual transmission the shift lever is connected to the gearbox by a rod, on an automatic transmission it is connected by a hydraulic drive. Also the type of transmission is indicated in VIN code (4th character: M - mechanics, A - automatic).

Typical faults of the Nissan Almera N16 gearbox

Transmission weaknesses Almera N16 appear after 100–150 thousand km, but with aggressive driving or rare oil changes, problems may arise earlier. Let's look at the most common symptoms and their causes.

Symptom	Probable Cause	Mechanical/Automatic
Jerks when shifting gears	Worn synchronizers (2–3 gears), low oil level	✅ / ❌
Noise (howling) in neutral or when driving	Wear of primary/secondary shaft bearings, damage to gears	✅ / ✅
Shift delay (automatic transmission)	Dirty filter, worn clutches, low oil pressure	❌ / ✅
Oil leak	Worn seals, cracks in the crankcase, loose mounting bolts	✅ / ✅
Vibration at speeds of 60–80 km/h	Imbalance of the driveshaft, wear of CV joints, damage to gearbox supports	✅ / ✅

A critical feature of the RE4F03A automatic machine: when slipping on snow or mud, the oil quickly becomes contaminated with friction wear products, which leads to clogging of the valve body. If you ignore changing the oil every 60 thousand km, the repair will cost 50–80 thousand rubles.

⚠️ Attention: If on a manual transmission Almera N16 It became difficult to engage first gear, do not attribute this to a “feature of the model”. Most likely the synchronizers or clutch are worn out. Delay is fraught with destruction of gears.

Transmission diagnostics: when to go to service

Many checkpoint problems Nissan Almera N16 can be identified independently, without resorting to computer diagnostics. Here are the key signs that require immediate attention:

• 🔴 Metal shavings on the drain plug magnet - a signal about the destruction of bearings or gears. The gearbox needs to be disassembled.
• 🟡 Burning smell from oil (automatic transmission) — clutches burn out due to overheating. The oil and filter need to be replaced, and the torque converter may need to be repaired.
• 🔵 Crunching sound when engaging reverse gear — wear of the synchronizer or blocking ring. At an early stage, replacing the oil with a more viscous one (for example, 75W-90 instead of 75W-80).

For manual transmission RS5F31A The oil level is critical: when it drops below the minimum mark, the bearings begin to run dry, which leads to their jamming. Check the level every 10 thousand km through the inspection hole (it is located on the side of the crankcase).

Automatic RE4F03A more difficult to diagnose. If the car jerks when accelerating or “kicks” when shifting from 1st to 2nd gear, check:

1. Oil level and condition (should be red, without a burning smell).
2. The operation of solenoids (a common cause of jerking).
3. Pressure in the valve body (pressure gauge required).

Changing the oil in the Nissan Almera N16 gearbox: step-by-step instructions

The manufacturer's regulations require changing the oil in a manual transmission every 90 thousand km, in the machine - every 60 thousand km. But in Russian conditions (temperature changes, bad roads), these intervals should be reduced by 20–30%. Let's consider the replacement process for both types of boxes.

Manual transmission RS5F31A

To replace you will need:

• 🛢️ Oil 75W-80 or 75W-90 (volume - 2.8–3.0 l). Recommended brands: Nissan KE908-99931, Mobilube 1 SHC, Castrol Syntrans Transaxle.
• 🔧 24 mm wrench for drain plug.
• 🧰 New cork sealing washer (copper or aluminum).

Replacement algorithm:

1. Warm up the oil (drive 5–10 km).
2. Raise the car on a lift or pit.
3. Unscrew the drain plug (located at the bottom of the crankcase) and drain the oil.
4. Tighten the plug with a new washer.
5. Fill in new oil through the filler hole (located to the right of the battery) to the level of the inspection hole.

Automatic transmission RE4F03A

For an automatic machine the process is more complicated:

• 🛢️ Oil Nissan Matic D or Matic J (7–8 liters for a complete replacement).
• 🔧 Set of heads, filter wrench.
• 🧻 New gearbox filter (catalog number 31726-31X01).
• 📏 Level tube (for accurate level checking).

Features:

1. Drain the oil only after warming up to 60–70°C.
2. Replace the filter at every second service (every 120 thousand km).
3. Check the oil level with the engine running by switching the selector through all positions.

⚠️ Attention: In the vending machine RE4F03A Do not use oil that does not meet specifications Nissan Matic. Cheap analogues lead to slipping of the clutches and failure of the valve body.

Gearbox repair: when you can do without removal

Not all gearbox faults Almera N16 require major repairs. Some problems can be solved without removing the box:

• 🔧 Difficult gear shifting (manual) - the clutch is often to blame. Check the free play of the pedal (should be 5–10 mm) and the condition of the release bearing.
• 🛑 Oil leakage from seals — replace the input shaft cuffs (cat. no. 30501-31X00) and the switch rod. The cost of parts is 1.5–2 thousand rubles.
• ⚡ Automatic jerking when switching — try resetting the adaptations (disconnect the battery for 10 minutes) or replace the solenoids (cat. no. 31727-31X00).

If the problem is in the synchronizers or bearings, you cannot do without removing the gearbox. Average repair cost:

• Replacing synchronizers for 1st and 2nd gears - 15-20 thousand rubles.
• Automatic transmission valve body repair – 25–35 thousand rubles.
• Replacing the clutch assembly - 10-15 thousand rubles.

What to do if the gearbox “does not engage in any gear”?

This symptom is often associated with a failure of the clutch master cylinder (on a manual transmission) or a malfunction of the automatic transmission pump. Do not attempt to tow the vehicle as this may damage the gears. The best option: call a tow truck and deliver the car to a service center to diagnose the clutch drive or hydraulic system of the machine.

Selection of spare parts and analogues for the Almera N16 gearbox

Original spare parts for gearboxes Nissan Almera N16 They are expensive, but many parts can be replaced with high-quality analogues. Below is the compatibility table:

Detail	Original number	High-quality analogue	Note
Input shaft oil seal (manual transmission)	30501-31X00	Corteco 23017300B	Suitable for RS5F31A and RS5F32A
Automatic transmission filter	31726-31X01	Mann W 913/5	Requires replacement every second oil change
2nd gear synchronizer	32510-31X00	Febi 13635	Often fails when driving aggressively
Secondary shaft bearing	32526-31X00	SKF VKBA 3643	When replacing, check the shaft for runout

When purchasing spare parts, pay attention to the suffixes in the catalog numbers. For example, for Almera N16 with engine QG18DE Parts with index may be required -31X0A, and for QG15DE — -31X0B. Check compatibility by VIN code.

For machine RE4F03A it is critical to use original solenoids (31727-31X00). Chinese analogues often fail after 10–20 thousand km, which leads to repeated repairs.

Tuning and modernization of the Almera N16 gearbox

Standard boxes Almera N16 are not designed for high loads, but they can be upgraded for sports driving or increasing their service life. Popular improvements:

• 🏁 Increased grip - set Sachs 3000 951 861 withstands torque up to 220 Nm (versus standard 180 Nm). Suitable for engines with chip tuning.
• ⚙️ Short-stroke rocker — reduces lever play by 30–40%. Popular option: Nengun Short Shifter.
• 🛢️ Oil with molybdenum — Liqui Moly Hochleistungs-Getriebeoil 75W-90 reduces gear wear under high loads.

For machine RE4F03A It is possible to install an additional oil cooling radiator (cat. no. 31397-31X00). This is relevant for regions with hot climates or when towing a trailer.

⚠️ Attention: Installing a “sports” clutch with a hard disk can lead to an increase in load on the gearbox synchronizers. If you are not ready to sacrifice comfort, choose compromise options, for example, LUK 620316100.

Frequently asked questions (FAQ)

What kind of oil should I fill in the Almera N16 manual transmission if the original one is not on sale?

The use of synthetic oils is allowed 75W-80 or 75W-90 with permission GL-4. Suitable analogues:

• Castrol Syntrans Transaxle 75W-90 — the best choice in terms of price/quality ratio.
• Mobil Mobilube 1 SHC 75W-90 — suitable for cold regions (retains fluidity down to -40°C).
• Motul Gear 300 75W-90 — premium option for aggressive driving.

Avoid approved oils GL-5 - they contain sulfur, which destroys synchronizers.

How to check the oil level in a RE4F03A automatic transmission without a dipstick?

In the vending machine RE4F03A There is no dipstick - the level is checked through the inspection hole:

1. Warm up the oil to 60–70°C (drive 10–15 km).
2. Place the machine on a level surface.
3. Stop the engine and unscrew the inspection plug (located on the gearbox housing next to the right CV joint).
4. If oil does not flow out, add to the level of the lower edge of the hole.

For accuracy, use a level tube (31397-31X00).

How long does the clutch on the Almera N16 last when driving quietly?

Original clutch resource (Nissan 30500-31X00) with careful operation is 120–150 thousand km. Factors that reduce service life:

• Frequent driving in traffic jams (release bearing wear).
• Sudden starts with slipping.
• Use of non-original parts (for example, Chinese baskets).

Signs of wear: vibrations when releasing the pedal, increased free play, burning smell.

Is it possible to tow an Almera N16 with an automatic transmission on a cable?

Yes, but subject to the rules:

• Towing speed - no more than 40 km/h.
• Distance - to 50 km.
• The selector lever must be in position N.
• If towing is further than 50 km, remove the driveshaft or use a tow truck.

Ignoring these rules leads to overheating of the oil and wear of the clutches.

Where is the gearbox number on Almera N16?

The gearbox number is stamped on its housing:

• On mechanics RS5F31A - on the top of the crankcase, next to the starter mounting point.
• Automatically RE4F03A — on the right side of the crankcase (visible from the passenger side).

The number consists of 8–10 characters and begins with letters RS (mechanics) or RE (automatic). Example: RS5F31A-XXXX.