O-ring Nissan 221314M505: original, analogues and DIY replacement

O-ring 221314M505 - a small but critical detail in systems Nissan, responsible for the tightness of connections of fuel lines, oil channels or hydraulic systems. Its wear or damage can lead to fuel leaks, a drop in oil pressure, or even failure of key components. Owners Qashqai J10/J11, X-Trail T31/T32 and other models are often faced with the need to replace this ring, but information about it is scattered - from article numbers to installation nuances.

In this article we have collected all current information on 221314M505 for 2026: where exactly the part is installed, how to distinguish the original from a fake, which analogues are not inferior in quality, as well as step-by-step replacement instructions with photos and videos. We will pay special attention to typical mistakes that even experienced craftsmen make - for example, incorrect selection of ring material for systems with aggressive media (fuel, antifreeze).

Where is O-ring 221314M505 used in Nissan?

Article 221314M505 - universal designation for o-rings with a diameter 14.3 mm (internal) and 17.3 mm (external), made of fluorine rubber (FKM) or nitrile rubber (NBR). These materials are resistant to fuel, oils and high temperatures, which determines the scope of application of the part:

• 🔧 Fuel systems: sealing the connections of fuel pipes with rails, filters or pump (for example, in Nissan Qashqai 1.5 dCi And X-Trail 2.0).
• 🛢️ Oil lines: sealing the connecting fittings of the oil radiator or turbine (relevant for Pathfinder R51 with engine VQ40DE).
• 🔥 Cooling systems: less often - in the connections of the heater pipes or expansion tank (for example, in Navara D40).
• ⚙️ Hydraulics: on some models (eg Patrol Y61) ring is used in power steering.

Key Point: The ring material must match the environment. For example, for diesel engines (1.5 dCi, 2.0 dCi) required FKM (viton), since NBR destroyed by biodiesel. Acceptable in gasoline systems NBR, but with a limited service life.

Original vs analogues: how not to run into a fake

Original ring 221314M505 comes in original packaging Nissan with a hologram and laser-etched article number. However, its price (from 300–500 ₽ per piece) often pushes owners to search for analogues. Here are the tested options:

Brand	Article	Material	Price (₽)	Notes
Nissan (original)	221314M505	FKM (Viton)	450–600	Best quality, but often counterfeited
Corteco	20014300	FKM	280–350	German brand, suitable for diesel engines
Elring	535.140	NBR/FKM	220–300	Universal option, check labeling
Goetze	71-30143-00	FKM	300–400	High temperature resistance
NoName (China)	—	NBR	50–150	Risk of cracking after 10–15 thousand km

⚠️ Attention: Counterfeits are often sold under the original article number, but have the following characteristics:

• 📦 Packaging without a hologram or with a blurred font.
• 🔍 The ring is too hard or sticky to the touch (the original is elastic, with a smooth surface).
• 🔬 Layering or bubbles are visible on the cut (the original is homogeneous).

Please check the item before purchasing fuel/oil compatibility your model. For example, for Nissan Juke 1.6 (gasoline) will do NBR, and for X-Trail 1.6 dCi - only FKM.

Step by step replacement of O-ring 221314M505

The replacement process depends on installation location rings, but the general scheme looks like this:

1. Preparation: Relieve pressure in the system (for the fuel system, remove the fuel pump fuse and start the engine until it stops; for the oil system, let the engine cool).
2. Dismantling: Disconnect the fitting or pipe where the ring is installed. Use key for 17 or 19 (depending on model).
3. Removing the old ring: Pry it off with a plastic tool (not metal!) to avoid damaging the seat.
4. Cleaning: Wipe the groove with a lint-free cloth moistened with isopropyl alcohol or carburetor cleaner.
5. Installing a new ring: Place it on the fitting without distortion, after lubricating it.
6. Assembly: Connect the parts, tighten to torque 20–25 Nm (for fuel systems) or 30–35 Nm (for oil ones).

🔧 Tools you will need:

• 🔨 Set of heads and collars.
• 🔧 Pliers with thin jaws (for removing clamps).
• 🧴 Seal lubricant (Molykote 111 or analogues).
• 🧻 Lint-free napkins and alcohol.

⚠️ Attention: When replacing the ring in fuel system Nissan Almera N16 or Primera P12 be sure to replace and sealing washers on fittings (article no. 16526-4M000). Reusing them will result in leakage!

Typical replacement errors and their consequences

Even experienced craftsmen make mistakes that shorten the life of the ring or lead to breakdowns. Here are the most common:

1. Using the wrong material: Installation NBR-rings into the diesel system (X-Trail 2.0 dCi) will lead to its swelling and clogging of the fuel line through 5–10 thousand km.
2. Connection tightening: Tightening torque over 35 Nm deforms the ring, causing leaks (relevant for Qashqai J11 with aluminum fittings).
3. Damage to the seat: Scratches from metal tools cause leaks. Use plastic spatulas!
4. Lack of lubrication: A dry ring wears out faster and may break during installation.
5. Ignoring related details: For example, in Pathfinder R51 When replacing an oil cooler ring, people often forget to check the condition thermostat (21200-4M000).

The consequences of errors vary from minor leaks (oil on pan) up to critical breakdowns:

• 🔥 Fire: Fuel leak to hot manifold (Nissan Murano Z50).
• ⚠️ Power Loss: Air leak in the fuel system (Navara D40).
• 🛑 Engine seizure: Loss of oil pressure due to leakage (Teana J32).

What to do if it leaks after replacement?

1. Check the tightening torque (should be no more than 35 Nm).

2. Inspect the ring for cracks (possibly defective).

3. Check the alignment of the fittings - misalignment leads to leaks.

4. For diesel systems, make sure the ring is FKM and not NBR.

How to Extend the Life of an O-Ring

Average ring life 221314M505 — 50–80 thousand km, but with proper use it can be increased to 100–120 thousand km. Here are the key recommendations:

• 🛢️ Fuel/oil quality: Use fuel with an octane rating of at least 95 (for gasoline Nissan) and oil with approval API SN or ACEA C3. Impurities in fuel destroy FKM for 20–30 thousand km.
• 🔥 Temperature: Avoid engine overheating (more than 110°C) - this accelerates the aging of rubber. B Patrol Y62 Monitor the operation of the cooling fan.
• 🧴 Preventive lubrication: Every 10 thousand km apply a thin layer to the ring silicone grease (For example, CRC 5-56).
• 🔧 Regular inspection: During maintenance, check the condition of the rings on the fuel rail fittings (Juke F15) or oil filter (Tiida C11).

⚠️ Attention: In models with direct injection (Nissan GT-R R35, 370Z) the fuel system rings operate under pressure up to 200 bar. Here we only allow Top class FKM (For example, Corteco 20014300).

Where to buy 221314M505: trusted suppliers

The original ring and high-quality analogues can be purchased from the following suppliers (prices are current for May 2026):

Supplier	Type	Price (₽)	Delivery time	Features
Official Nissan dealer	Original	450–600	1–3 days	Guaranteed authenticity, but high price
EXIST	Original/analogues	250–500	2–5 days	Quick search by VIN, discounts for service stations
EMEX	Analogues (Corteco, Elring)	200–350	3–7 days	Good choice for diesels
Autoall	Original/analogues	300–480	1–4 days	Frequent promotions, photo verification
AliExpress	Analogs (China)	50–150	14–30 days	Risk of counterfeiting, but cheap options for testing

💡 Advice: When purchasing, please check whether the ring is suitable for your engine modifications. For example, for Nissan Almera Tino with motor QR20DE you need a ring with an inner diameter 14.3 mm, and for CD20 — 14.5 mm (article 22131-4M000).

Frequently asked questions about 221314M505

❓ Can ring 221314M505 be reused?

No, even if visually it looks intact. The rubber loses its elasticity after dismantling and will not provide a tight seal when reinstalled. Exception - a temporary measure (for example, on the way), but no more 500 km mileage

❓ How to distinguish FKM from NBR?

FKM (Viton) usually black or dark brown in color, harder to the touch and has a faint chemical odor. NBR - softer, often gray or green. You can accurately determine the material by immersing the ring in gasoline: NBR will swell in 10 minutes, FKM - no.

❓ Is 221314M505 suitable for Nissan Note E12?

Yes, but only for petrol versions (HR16DE). In diesel Note (K9K) a ring of FKM with article number 22131-4M010 (outer diameter 17.5 mm).

❓ What to do if after replacement the “Check Engine” light is on?

Most likely an air leak in the fuel system. Check:

1. The tightening torque of the fittings (must be 20–25 Nm).
2. Integrity of fuel pipes (cracks near the ring).
3. Condition of seals on the fuel rail (16526-4M000).

If the error does not clear, run diagnostics with a scanner (for example, Launch X431).

❓ Are there universal analogues for other brands?

Yes, a ring with the same dimensions (14.3×17.3 mm) suitable for:

• Renault: 7701470304 (for Duster, Kaptur).
• Mitsubishi: MD360417 (for Outlander with 4B12).
• Toyota: 90301-14016 (for RAV4 until 2013).

But check the material - for diesels Nissan And Renault needed FKM!