BMW N43 2.0 NA Petrol Engine
Used & Reconditioned for Sale
N43B20, N43B20A, N43B20U0, N43B20U1, 2.0i, 2.0 NA
1,995 cc
Displacement
Petrol
Fuel
2006–2013
Production
Fits BMW 1 Series (E81/E82/E87/E88) and 3 Series (E90/E91/E92/E93) — verified fitment by registration, fixed prices, UK delivery.
Displacement
Fuel
Production
Configuration
Applications
Verified Fitment
Checked by registration
12-Month Warranty
On reconditioned units
UK Nationwide Delivery
2-4 working days
14-Day Returns
Uninstalled, full refund
Buy a N43 Engine for Your Vehicle
The BMW N43 is the 2.0-litre naturally aspirated four-cylinder petrol engine that powered the 1 Series (E8x) and 3 Series (E9x) from 2006 to 2013. As BMW's first four-cylinder with direct injection, it features Valvetronic III and VANOS for efficient performance. We offer 2 distinct application groups, each configured and priced for its specific BMW chassis.
N43 — 1 Series (E81/E82/E87/E88) 116i/118i/120i
BMW 1 Series E8x — 116i, 118i, 120i 2007–2013
£1,195
Coming soonN43 — 3 Series (E90/E91/E92/E93) 316i/318i/320i
BMW 3 Series E9x — 316i, 318i, 320i 2006–2011
£1,195
Coming soonFull N43 Compatibility
The table below shows every BMW model that uses the N43 engine, split by generation and body style. Each row links directly to its application group page, where you can confirm fitment by registration and see current stock and pricing.
| Model | Chassis | Variants | Years | Config. | Unit page |
|---|---|---|---|---|---|
| 1 Series | E81/E87 | 116i, 118i, 120i | 2007–2013 | Longitudinal | Coming soon |
| 1 Series | E82 | 118i, 120i | 2007–2013 | Longitudinal | Coming soon |
| 1 Series | E88 | 118i, 120i | 2008–2013 | Longitudinal | Coming soon |
| 3 Series | E90 | 316i, 318i, 320i | 2006–2011 | Longitudinal | Coming soon |
| 3 Series | E91 | 316i, 318i, 320i | 2006–2011 | Longitudinal | Coming soon |
| 3 Series | E92 | 318i, 320i | 2007–2013 | Longitudinal | Coming soon |
| 3 Series | E93 | 318i, 320i | 2007–2013 | Longitudinal | Coming soon |
Confirm your exact specification with the registration checker above.
N43 Engine Prices
Our N43 engines are priced by application group — each group represents a specific BMW chassis with distinct engine mounts, ancillaries and ECU calibration. Prices shown are the lowest current listed prices for used units in each group, with reconditioned options available for buyers requiring maximum reliability.
| Application | Used from | Reconditioned from |
|---|---|---|
| N43 — 1 Series (E81/E82/E87/E88) 116i/118i/120i 2007–2013 | £1,195 | £1,895 |
| N43 — 3 Series (E90/E91/E92/E93) 316i/318i/320i 2006–2011 | £1,195 | £1,895 |
Prices shown are current lowest listed prices and update as stock changes. The price on each listing is the price you pay — no hidden fees at checkout.
What You Get with a N43 Engine
What You Get with a N43 Engine
What's included
Complete long‑block assembly; Renewed timing chain, guides and tensioners (recon units); Rebuilt cylinder head with new valve stem seals (recon units); Tested‑before‑dispatch with compression and leak‑down test; 6–12 month warranty (depending on condition)
Not included
- Fuel injectors and high‑pressure fuel pump (can be reused if sound)
- Ancillaries (alternator, starter, AC compressor)
- Turbocharger (not applicable – NA engine)
- Fitting and installation
Used or reconditioned?
Used N43 units are readily available from donor 1 Series and 3 Series vehicles, offering a cost‑effective solution. Reconditioned units are recommended for long‑term reliability, as the rebuild addresses the known wear points and injector issues. Consider your budget, intended ownership period, and the vehicle's value when deciding — reconditioned units offer factory-spec reliability with all wear items replaced, while used units provide a cost-effective replacement for older or lower-value vehicles. N43 engines are known for injector seal failures and timing chain wear at the transmission end, with higher‑mileage examples often requiring replacement rather than repair. Every unit we supply has injector seats inspected and the timing drive checked as standard before dispatch.
N43 Engine Buying FAQs
Answers to common fitment, condition, warranty and delivery questions.
A:The N43 2.0 naturally aspirated petrol engine was fitted to BMW 1 Series (E81/E82/E87/E88, 116i/118i/120i) and BMW 3 Series (E90/E91/E92/E93, 316i/318i/320i) from 2006 to 2013.
A:The N43 family includes N43B20, N43B20A, N43B20U0 and N43B20U1 – these are variant codes for different power outputs (from 105kW to 125kW) and applications, but all are the same 2.0‑litre engine architecture.
A:Used N43 units are readily available from donor 1 Series and 3 Series vehicles, offering a cost‑effective solution. Reconditioned units are recommended for long‑term reliability, as the rebuild addresses the known wear points and injector issues. Consider your budget, intended ownership period, and the vehicle's value when deciding — reconditioned units offer factory-spec reliability with all wear items replaced, while used units provide a cost-effective replacement for older or lower-value vehicles.
A:Use our registration checker to confirm compatibility, or check your V5C for the engine code. Match against N43, N43B20, N43B20A, N43B20U0 or N43B20U1. Always confirm chassis code (E8x or E9x) matches the listing group.
A:All N43 engines come with a 6–12 month warranty (depending on condition). UK nationwide palletised delivery is available. A free compatibility check is included with every order.
Check N43 Fitment for Your Vehicle
Enter your registration or select your chassis code from the compatibility table. We'll confirm the correct N43 application group and show you current stock with fixed pricing — no hidden fees, no surprises at checkout.