Description
Why Choose Our BMW 335i N54 or N55?
Our BMW 335i engines for sale stand out due to their proven Inline-6 turbocharged architecture, offering exceptional power, responsiveness, and aftermarket support. Known for their tunability and high performance, both the N54 (twin-turbo, 2007-2010) and N55 (single twin-scroll turbo, 2011-2013) engines deliver an exhilarating driving experience that defined the BMW 335i’s reputation as the enthusiast’s choice in the late-2000s through mid-2010s 3-Series lineup. If you’re seeking a top-notch 335i engine for sale that enhances your vehicle’s performance, both the N54 and the N55 are excellent choices depending on your priorities.
The N54 vs N55: Which Engine Is in Your 335i?
Confirming whether your 335i uses the N54 or the N55 is essential for proper engine sourcing:
| N54 (2006 to 2013 production) | Twin parallel turbochargers. Direct Injection. No Valvetronic. Used in BMW 335i 2007-2010 (E90/E91/E92/E93 pre-LCI), 135i (E82/E88), X6 xDrive35i (E71), Z4 sDrive35i (E89), 335is (2011-2013), 1M Coupe (2011). The tuner favorite, capable of 500+ HP on stock internals with aftermarket support. |
|---|---|
| N55 (2009 to 2017 production) | Single twin-scroll turbocharger. Direct Injection. Valvetronic variable valve lift. Used in 335i LCI 2011-2013 (E90/E92/E93), plus numerous other BMW models including 535i (F10), X3 xDrive35i (F25), X5 xDrive35i (F15), 640i (F12/F13), 740i (F01), 1-Series M variants. More reliable HPFP than N54, smoother daily driving, less aftermarket tuning headroom on stock internals. |
Both engines share the same fundamental architecture: 3.0L Inline-6, 84.0mm × 89.6mm bore and stroke, 10.2:1 compression, Direct Injection, DOHC 24-valve, Double-VANOS. The differences are turbocharger configuration and the addition of Valvetronic on the N55.
Key Features of Our 335i Engine for Sale
- 3.0 Liter Inline-Six: Known for smooth operation and balanced design, providing optimal power delivery and characteristic Inline-6 sound.
- Twin-Scroll Turbocharger (N55) or Twin Parallel Turbos (N54): Enhances throttle response and mid-range torque, ensuring spirited acceleration. The N55’s twin-scroll design provides similar throttle response to the N54’s twin parallel turbos with reduced complexity.
- Direct Injection: High-Pressure Direct Injection optimizes fuel delivery, improving combustion efficiency, power output, and fuel economy.
- Double-VANOS Variable Valve Timing: Fine-tunes engine response by adjusting valve timing on both intake and exhaust camshafts, optimizing airflow and combustion across the operating range.
- Valvetronic (N55 only): Variable valve lift on the intake camshaft, the BMW Valvetronic system improves fuel economy and emissions performance. The N54 does not have Valvetronic.
- Engine Management Systems: Advanced electronic controls and monitoring systems ensure precise engine operation and reliability.
- High-Pressure Direct Fuel Injection (DI): Delivers fuel directly into the combustion chamber at high pressure, improving fuel atomization for better combustion efficiency and power output.
- Aluminum Engine Block: Reduces weight without compromising strength, contributing to improved 50/50 weight distribution and handling characteristics.
- Electronic Wastegate Control: Enhances turbocharger response and efficiency by electronically regulating the wastegate, optimizing boost pressure for varying driving conditions.
- Intercooler: Efficiently cools the compressed air from the turbocharger before it enters the engine, improving air density and enhancing performance.
- Sport and Eco Pro Modes: Allows drivers to customize engine response and efficiency characteristics based on preferences or driving conditions, enhancing versatility.
- Distinctive Engine Sound: Through acoustic engineering and intake/exhaust tuning, BMW ensures the engine emits the characteristic Inline-6 sound under acceleration.
- Maintenance and Longevity: Built with durable materials and designed for longevity, the 335i engine incorporates features like extended oil change intervals and robust cooling systems to ensure reliability over time. Known service items include HPFP (high-pressure fuel pump), water pump, oil filter housing gasket, and VANOS solenoids, all of which are addressable through routine maintenance.
BMW 335i N54 and N55 Fits
The N54 and N55 powered numerous BMW models during their production runs:
- BMW 335i Sedan (E90) – both N54 and N55 generations
- BMW 335i Wagon (E91) – both generations
- BMW 335i Coupe (E92) – both generations
- BMW 335i Convertible (E93) – both generations
- BMW 135i (E82 coupe, E88 convertible) – both generations
- BMW X6 xDrive35i (E71) – N54 and N55
- BMW Z4 sDrive35i (E89) – N54
- Alpina B3 (E90/E91/E92/E93) – N54-based with Alpina enhancements
- Wiesmann GT MF4 – N54-based niche application
- BMW 1M Coupe (2011) – N54 only (high-output version)
- BMW 335is (2011-2013) – N54 high-output version
Numerous additional BMW models received the N55 (335i xDrive, 535i, 640i, 740i, X3 xDrive35i, X5 xDrive35i, etc.) but the 335i is the headline application that defined both engine families’ reputations.
Performance Highlights
Choosing a BMW 335i engine for sale from us means opting for excellence. The N54 offers impressive acceleration with its twin-turbo architecture and is widely regarded as one of the most tunable BMW engines ever produced. The N55, with its single twin-scroll turbo, ensures smooth and linear power delivery with improved daily driver reliability.
Condition and Testing
Each BMW 335i engine for sale is rigorously tested to guarantee optimal performance. Engine family identification (N54 vs N55), all 6 cylinders compression tested, turbocharger operation verified (both N54 turbos or N55 twin-scroll), HPFP condition assessed (the #1 N54 known service item), and VANOS function confirmed.
Vehicle Compatibility
| BMW 335i E90 Sedan (2007-2013) | Both N54 (pre-LCI 2007-2010) and N55 (LCI 2011-2013) |
|---|---|
| BMW 335i E91 Wagon | Both N54 and N55 generations |
| BMW 335i E92 Coupe (2007-2013) | Both N54 and N55 |
| BMW 335i E93 Convertible (2007-2013) | Both N54 and N55 |
| BMW 135i (E82/E88) | Both N54 and N55 |
| BMW X6 xDrive35i (E71) | Both N54 and N55 |
| BMW Z4 sDrive35i (E89) | N54 |
| Alpina B3 (E90/E91/E92/E93) | N54-based with Alpina turbocharger and tuning |
| BMW 1M Coupe (2011) | N54 high-output |
| BMW 335is (2011-2013) | N54 high-output |
Condition and Inspection
- Engine family confirmed (N54 twin-turbo or N55 single twin-scroll)
- Donor BMW chassis confirmed (E90/E91/E92/E93/135i/X6/Z4)
- All 6 cylinders compression tested
- Turbocharger operation verified (both turbos on N54, twin-scroll on N55)
- HPFP (High-Pressure Fuel Pump) condition assessed
- VANOS solenoid function confirmed
- Valvetronic function verified (N55 only)
- Cooling system inspection
- Block visual inspection
- Engine family confirmed (N54 or N55)
- Donor BMW chassis confirmed
- All 6 cylinders compression tested
- Turbocharger operation verified
- HPFP condition assessed (the #1 N54 known service item)
- VANOS function confirmed
- Free freight delivery to all 50 states
- 15 day replacement warranty on internal defects
- BMW-experienced support team on the phone
David Anderson (verified owner) –
I recently purchased a BMW 335i engine from Vaz Auto Solutions, and I couldn’t be happier with my decision. The engine arrived in excellent condition, exactly as described on the website. Installation was straightforward, and the engine runs smoothly with impressive power delivery.
Robert Miller (verified owner) –
Vaz Auto Solutions delivered a fantastic experience when I ordered a BMW 335i engine. The engine was in excellent shape upon arrival and perfectly matched the description. Once installed in my 335i, it ran flawlessly, delivering a noticeable improvement in performance.