BMW N46 2.0 Petrol Engine
Used & Reconditioned for Sale
N46B18, N46B20, N46B20A, N46B20B, N46B20C, N46N, 2.0i, 118i/318i/320i engine
Displacement
Fuel
Production
Fits BMW 1 Series, 3 Series, 5 Series, X1, X3, and Z4 — also known as N46B20, N46B18. Verified fitment, 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 N46 Engine for Your Vehicle
We supply the N46 2.0 petrol engine in five vehicle‑specific configurations: 1/3 Series (E8x/E9x), 3 Series (E46), 5 Series (E60), X1/X3 (E84/E83), and Z4 (E85/E86). Each group is priced and configured for its exact chassis.
N46 — BMW 1 Series & 3 Series (E8x/E9x)
BMW 1/3 Series (E8x/E9x)
895
Coming soonN46 — BMW 3 Series (E46)
BMW 3 Series (E46)
795
Coming soonN46 — BMW 5 Series (E60)
BMW 5 Series (E60)
995
Coming soonN46 — BMW X1 & X3 (E84/E83)
BMW X1/X3 (E84/E83)
1095
Coming soonN46 — BMW Z4 (E85/E86)
BMW Z4 (E85/E86)
1195
Coming soonFull N46 Compatibility
Our compatibility matrix lists every BMW model that uses the N46 engine across all years and chassis. Each row links to the correct engine unit page — verify with your registration for a guaranteed fit.
| Model | Chassis | Variants | Years | Config. | Unit page |
|---|---|---|---|---|---|
| 1 Series | E81/E87 | 116i, 118i, 120i | 2004–2012 | Longitudinal | Coming soon |
| 1 Series | E82/E88 | 118i, 120i | 2007–2012 | Longitudinal | Coming soon |
| 3 Series | E46 (Sedan) | 316i, 318i | 2003–2005 | Longitudinal | Coming soon |
| 3 Series | E46 (Coupe) | 318Ci, 320Ci | 2004–2006 | Longitudinal | Coming soon |
| 3 Series | E46 (Compact) | 316ti, 318ti | 2003–2005 | Longitudinal | Coming soon |
| 3 Series | E90/E91 | 318i, 320i | 2005–2012 | Longitudinal | Coming soon |
| 3 Series | E92/E93 | 320i | 2006–2012 | Longitudinal | Coming soon |
| 3 Series | E90 320Si | 320Si (limited edition) | 2006 | Longitudinal | Coming soon |
| 5 Series | E60 | 520i | 2005–2010 | Longitudinal | Coming soon |
| X1 | E84 | 18i, 2.0i, sDrive18i | 2009–2015 | Longitudinal | Coming soon |
| X3 | E83 | 2.0i | 2006–2010 | Longitudinal | Coming soon |
| Z4 | E85/E86 | 2.0i | 2006–2008 | Longitudinal | Coming soon |
Confirm your exact specification with the registration checker above.
N46 Engine Prices
Our N46 engine prices are grouped by application to match your vehicle’s exact specification. Used units are stock‑sourced from UK donor vehicles; reconditioned units are fully rebuilt with new timing chains and a tested cylinder head. Prices below are the current lowest listed prices for each configuration.
| Application | Used from | Reconditioned from |
|---|---|---|
| BMW 1/3 Series (E8x/E9x) | £895 | £1,895 |
| BMW 3 Series (E46) | £795 | £1,795 |
| BMW 5 Series (E60) | £995 | £1,995 |
| BMW X1/X3 (E84/E83) | £1,095 | £2,095 |
| BMW Z4 (E85/E86) | £1,195 | £2,195 |
*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 N46 Engine
What You Get with a N46 Engine
What's included
Not included
Used or reconditioned?
For high-volume compact applications (Groups 1 and 2), used units are widely available and offer excellent value. For executive (Group 3), SUV (Group 4), and sports car (Group 5\) applications, reconditioned units are more commonly selected given higher vehicle value and lower used-unit availability. Used is cost‑effective for 1/3 Series; recon is recommended for 5 Series, X1/X3, and Z4. The N46 is a naturally aspirated 2.0-litre petrol engine from BMW's N-series family, featuring Valvetronic and double VANOS. Known failure points include timing chain tensioner wear (original tensioner was too short, allowing chain slack and guide damage), valve stem seal degradation causing oil consumption, and VANOS/Valvetronic issues. A prepared N46 unit addresses these with renewed timing components, rebuilt cylinder head with new valve stem seals, and tested VANOS/Valvetronic systems as standard.
N46 Engine Buying FAQs
Answers to common fitment, condition, warranty and delivery questions.
A:BMW 1 Series (E81/E82/E87/E88), 3 Series (E46, E90/E91/E92/E93), 5 Series (E60), X1 (E84), X3 (E83), and Z4 (E85/E86). The N46 was used across BMW's range from 2004 to 2015.
A:N46B18 (1.8L, 114 bhp), N46B20 (2.0L, 127–150 bhp), N46B20A/B/C (various outputs), and N46N (2007+ update, 168–170 bhp). All share the same base architecture.
A:For high-volume compact applications (Groups 1 and 2), used units are widely available and offer excellent value. For executive (Group 3), SUV (Group 4), and sports car (Group 5\) applications, reconditioned units are more commonly selected given higher vehicle value and lower used-unit availability. Used is the best value for 1/3 Series; recon gives extra reliability for 5 Series, X1/X3 and Z4.
A:Use our registration checker, confirm against your V5C, and match the engine code stamp (N46B18, N46B20, N46B20A/B/C, or N46N). Check chassis code against the compatibility matrix above.
A:6–12 month warranty (depending on condition), UK nationwide palletised delivery, free compatibility check before dispatch.
Find Your N46 Engine Now
Enter your registration to confirm fitment, then buy your exact N46 unit at the listed price — no hidden fees, no quotes.