BMW N55B30 Engine – 335i / 135i (Low Mileage OEM Assembly)
This is a BMW N55B30 3.0L turbocharged inline-6 engine used in the BMW 335i and BMW 135i.
It’s a modern single twin-scroll turbo engine designed to replace the older N54, offering improved reliability, smoother power delivery, and better efficiency.
This listing is for a complete OEM engine assembly, typically used for engine swaps, replacements, or rebuild projects.
Key Specifications
- Engine Code: N55B30
- Configuration: Inline-6, turbocharged
- Displacement: 3.0L
- Fuel System: Direct injection
- Turbo: Single twin-scroll turbocharger
- Drive Layout: RWD / AWD compatible (variant dependent)
Performance Overview
- Smooth and linear power delivery
- Strong mid-range torque
- Stock output around 300–320 hp (varies by model)
- Excellent tuning potential (common upgrades push 400+ hp)
Why the N55 Is Popular
- More refined than the older N54 platform
- Improved thermal management and reliability
- Widely used across multiple BMW models
- Strong aftermarket and swap support
Vehicle Fitment
Common donor vehicles include:
- BMW 335i
- BMW 135i
- BMW 1 Series (select trims)
What’s Typically Included
- Complete long block (block + head)
- Turbo system (integrated)
- Basic engine accessories (varies by seller)
- OEM factory assembly
Paula Correia (verified owner) –
Style 68 for E36 M3 – light and strong. Powdercoated silver. Lug seats are perfect. genuinecarpartsforsale is trustworthy.
Carlos Ramirez (verified owner) –
N74 V12 for my G11 760i – twin-turbo glory! No oil consumption after 1k miles. Unreal quality for a used engine.
Sophie Dubois (verified owner) –
N62 engine for my E60 550i – Valve seal issues gone! This site is a lifesaver for BMW V8 owners. Thanks a million.
Victor Santos (verified owner) –
S62 engine for my E39 M5 – holy grail achieved! Came with compression test results. genuinecarpartsforsale exceeds expectations.
Noah Williams (verified owner) –
S85 V10 for my M5 – yes, it’s a risk, but this one was perfect. Long live the V10! genuinecarpartsforsale is legit.
Thomas Müller (verified owner) –
S50 engine for my E36 M3 USDM – VANOS works perfectly. Compression across cylinders was even. Very trustworthy vendor.
Olivier Moreau (verified owner) –
F80 M3 gearbox (manual) – third gear lockout is gone. Shifts like a bolt action rifle. 100% satisfied with genuinecarpartsforsale.
Miguel Torres (verified owner) –
N52 engine for my E90 330i – no more lifter tick. The engine looked cleaner than the photos. Will buy another for my wife’s car.
Gilles Fontaine (verified owner) –
BMW F30 M-sport big brake kit – 4-piston fronts. Stopping power is incredible. Came with pads and sensors. genuinecarpartsforsale saved me.
Laura Garcia (verified owner) –
N74 V12 for my G11 760i – twin-turbo glory! No oil consumption after 1k miles. Unreal quality for a used engine.
Chen Wei (verified owner) –
S62 engine for my E39 M5 – holy grail achieved! Came with compression test results. genuinecarpartsforsale exceeds expectations.
Romain Chevalier (verified owner) –
E21 320i gearbox (245 overdrive) – rare dogleg. Works perfectly after fluid change. Vintage parts with modern service.
Andreia Lopes (verified owner) –
F87 M2 competition brake rotors – OEM quality. No runout. The anti-corrosion coating works. genuinecarpartsforsale is my brake source.
Isabella Rossi (verified owner) –
BMW S63 engine for my X6M – absolute beast! Shipping was fast and the customer service helped with my questions. Highly recommend this site.
Olivier Moreau (verified owner) –
E34 euro smiley headlights (Bosch) – glass lenses no cracks. Light output is amazing. Classic upgrade done right.
Yvonne Schneider (verified owner) –
ZF 9HP for X1 F48 – rare but you had it. My wife loves the smooth shifts. Thanks for saving our family trip budget.
Mamadou Diallo (verified owner) –
E70 X5M front bumper – included the lower mesh and fog lights. Direct bolt-on to my X5. genuinecarpartsforsale made my day.
Diego Herrera (verified owner) –
The M20 engine for my E30 restoration came exactly as described. No hidden surprises. genuinecarpartsforsale is my new go-to for BMW parts.
Daniel Schmidt (verified owner) –
Ordered a rebuilt M62 for my E39 540i. It fired up first try. The reviews on the site helped me trust the product. Keep up the great work!
Halima Abdi (verified owner) –
E39 540i 6-speed gearbox – hard to find but you had two! Installed one, kept one as spare. Thanks for the bulk deal.
Patrick Renault (verified owner) –
E38 740i sport bumper – the lip is one piece. No cracks from shipping. My 7-series looks 10 years younger. Thanks.
Ananya Sharma (verified owner) –
M21 diesel engine for my E28 524td – starts right up in cold weather. Hard-to-find part made easy. 10/10 experience.