The N46B20 is a 2.0L naturally aspirated inline-four gasoline engine produced by BMW from 2004 to approximately 2012;
it belongs to the N46 series (an upgraded version of the N42). It features Double-VANOS and Valvetronic variable valve
lift systems and is known for its smooth operation and fuel efficiency. It was primarily used in the 18i and 20i models. A later updated version, the N46N, was introduced.
Our products are exported to various parts of the country, and the customers we have worked with have received unanimous praise. The company has invested over 20 million yuan in high-end remanufacturing equipment imported from abroad and a first-class production team in the country. Our warehouse has a total area of over 8000 square meters, with scientific management and sufficient supply of goods.
Engine Code: N46B20 (Common variants: N46B20O0, N46B20O1, N46B20U1, N46B20U2, N46NB20, etc.)
Displacement: 1,995 cm³ (2.0 L)
Bore × Stroke: 84.0 mm × 90.0 mm
Compression Ratio: 10.5:1
Cylinder Configuration: Inline-4, aluminum alloy block + aluminum alloy cylinder head
Valve Train: DOHC 16-valve + Double-VANOS + Valvetronic
Fuel System: Multipoint fuel injection (some models feature DISA variable intake manifold)
Charging System: Naturally aspirated
Power Range: Approx. 95–125 kW (129–170 PS)
Torque range: approx. 180–210 Nm
Timing drive: Timing chain
Engine oil capacity: approx. 4.25 L (recommended 5W-30 / 5W-40, BMW LL-01 specification)
Production years: 2004–approx. 2012
Emissions standards: Euro 4 / Euro 5
A long block typically includes core components such as the cylinder block, crankshaft, pistons, connecting rods, cylinder head, and timing system.
The BMW N46B20 engine has been used in various BMW models, including selected versions of the following vehicles.
| BMW Model | Chassis Code | Application |
|---|---|---|
| BMW 118i | E87 | Selected N46 versions |
| BMW 120i | E87 | N46B20 |
| BMW 120i | E81 | Selected N46 versions |
| BMW 120i | E82 | Selected N46 versions |
| BMW 120i Convertible | E88 | Selected N46 versions |
| BMW 318i | E46 | Selected N46B20 versions |
| BMW 318Ci | E46 | Selected N46B20 versions |
| BMW 318ti | E46 | Selected N46B20 versions |
| BMW 318i | E90 | Selected N46B20 versions |
| BMW 318i Touring | E91 | Selected N46B20 versions |
| BMW 320i | E90 | N46B20 |
| BMW 320i Touring | E91 | N46B20 |
| BMW 320i Coupe | E92 | Selected N46 versions |
| BMW 320i Convertible | E93 | Selected N46 versions |
| BMW 520i | E60 | Selected N46 versions |
| BMW 520i Touring | E61 | Selected market versions |
| BMW X1 sDrive18i | E84 | Selected N46N versions |
| BMW X3 2.0i | E83 | Selected N46B20 versions |
| BMW Z4 2.0i | E85 | Selected N46B20 versions |
Important Fitment Notice
BMW produced several N46 engine variants, including N46B20A, N46B20B, N46B20C, N46B20E and N46NB20.
These versions should not be assumed to be directly interchangeable. Differences may include engine output,
compression ratio, mounting components, oil pan design, fuel system configuration, engine management and emission-related equipment.
Please provide the following information for compatibility verification:
17-digit vehicle VIN
Original engine code
Vehicle model and production year
Original engine OE number
Photos of the original engine, if available
The following BMW part numbers are related to N46B20 short engine and replacement engine applications.
| BMW Part Number | Engine Version | Catalog Description |
|---|---|---|
| 11000430932 | N46B20B | Short Engine |
| 11000430933 | N46B20B | Remanufactured Short Engine |
| 11000430934 | N46B20C | Short Engine |
| 11000430935 | N46B20C | Remanufactured Short Engine |
| 11000430936 | N46B20B | Short Engine |
| 11000430937 | N46B20B | Remanufactured Short Engine |
| 11000429947 | N46B20B | China-Market Short Engine Reference |
| 11000429948 | N46B20B | China-Market Remanufactured Short Engine Reference |
| 11000429949 | N46B20C | Short Engine |
| 11000429950 | N46B20C | Remanufactured Short Engine |
| 11000493886 | N46B20E | Short Engine |
| 11000493914 | N46B20E | Remanufactured Short Engine |
| 11002333982 | N46B20CD | Short Engine |
OE Number Disclaimer
The above numbers are BMW catalog references for specific short engine or replacement engine configurations.
They are not universal long block OE numbers.
The correct engine reference must be confirmed using the vehicle VIN, production date and original engine configuration.
Please contact us for assistance with OE cross-reference verification.
The BMW N46B20 2.0L engine long block is suitable for professional automotive engine replacement and repair markets.
We welcome inquiries from:
Automotive engine importers
Engine wholesalers and distributors
Auto parts dealers
Independent repair workshops
Engine rebuilding companies
Automotive service centers
For wholesale inquiries, please provide your required engine version, order quantity and destination country.
The BMW N46B20 has a displacement of approximately 1,995 cc, or 2.0 liters.
No. The N46B20 is a naturally aspirated gasoline engine.
Yes. The N46B20 uses BMW Valvetronic variable valve lift technology together with Double VANOS variable valve timing.
Not necessarily. Different engine variants may have different specifications and vehicle applications.
Please confirm the original engine code and VIN before ordering.
Not automatically. The included components depend on the actual product configuration.
Please request a detailed supply list before placing an order.
Yes. Please provide the 17-digit VIN, original engine code and OE reference number for compatibility checking.
Yes. We welcome inquiries from international engine distributors, automotive parts wholesalers,
importers and professional repair businesses.
Looking for a BMW N46B20 2.0L gasoline engine long block for replacement or wholesale distribution?
Contact us with your vehicle VIN, engine code and OE reference number.
Our team can assist with engine identification, fitment verification, product configuration and export quotations.
Send us your inquiry today for BMW N46B20 engine long block supply.
| Place of Origin | Guangdong, China |
| Condition | Remanufactured |
| Purpose | for replace/repair |
| Type | Gas / Petrol Engine |
| Power | OEM Standards |
| Quantity (pieces) | 1 - 10 | 11 - 50 | > 50 |
| Lead time (days) | 7 | 15 | To be negotiated |
1. Our remanufactured products use accessories provided by well-known brand suppliers such as VICTORREINZ, SCHAEFFLER, KS KOLBENSCHMIDT GmbH, etc.
2. Our product quality is close to the original factory quality, but the price is only 50-60% of the original engine. We can also provide you with a one-year or 100000 kilometer warranty service for the entire machine, and professional after-sales personnel will follow up with you.
3. We have over 15 years of experience in the production and research of automotive engines, and our technical level and personnel training are very scientific and mature. Customers who have worked with us have expressed their agreement with our products and after-sales service.
4. 2018 It has achieved an annual production capacity of 2200 units and has become a major supplier of high-end engine remanufacturing and parts in China's automotive aftermarket.
5. In April 2021, T/CAAMTB passed the certification company of China Automobile Research and Huacheng. 19-2019 Certification of the management system requirements of gas vehicle parts remanufacturing enterprisesIn October 2021, he became a member of the National Green Manufacturing Technology Standardization Committee and participated in the drafting of the Technical Specification for Assembly of Remanufacturing Mechanical and Electrical Products.
