BMW 335i (F30) engine: which one, problems and replacement

The BMW 335i in the sixth 3 Series generation (F30, built 2011–2019) was built with 3 different engines over its life: the N55B30 (306 hp, 2009–2017), the N55B30T0 (306 hp, 2009–2016) and the N55B30O0 (326 hp, 2013–2016).

Below you will find how to identify the engine in your 335i, the faults to look for, current prices for a replacement and the swap options that make sense.

• Generation: sixth 3 Series, 2011–2019
• Body styles: F30 (saloon)
• Engines: N55B30, N55B30T0, N55B30O0
• Output: 306 hp and 326 hp
• Replacement engines in stock: 400 from 2.207,00 €

Which engine is in your 335i?

N55B30 in the 335i

The N55B30 was used in the F30 335i, built 2009–2017. It is a 3.0 L turbocharged petrol inline-6 with 306 hp and 400 Nm. Compared with the N55B30T0 (306 hp) and N55B30O0 (326 hp), it is in between.

Reading the code: N marks an N-series code, the generation of BMW engines introduced from 2001; 55 is the family number; B stands for petrol (from the German Benzin); 30 is the capacity in decilitres, so 3.0 litres.

N55B30T0 in the 335i

The N55B30T0 was used in the F30 335i, built 2009–2016. It is a 3.0 L turbocharged petrol inline-6 with 306 hp and 400 Nm. Compared with the N55B30 (306 hp) and N55B30O0 (326 hp), it is in between.

Reading the code: N marks an N-series code, the generation of BMW engines introduced from 2001; 55 is the family number; B stands for petrol (from the German Benzin); 30 is the capacity in decilitres, so 3.0 litres; T0 identifies the version or output stage.

N55B30O0 in the 335i

The N55B30O0 was used in the F30 335i, built 2013–2016. It is a 3.0 L turbocharged petrol inline-6 with 326 hp and 450 Nm. Compared with the N55B30 (306 hp) and N55B30T0 (306 hp), it is the strongest.

Reading the code: N marks an N-series code, the generation of BMW engines introduced from 2001; 55 is the family number; B stands for petrol (from the German Benzin); 30 is the capacity in decilitres, so 3.0 litres; O0 identifies the version or output stage.

335i engines by model year

The engine changed 2 times during the F30 run, in 2013 and 2017. Changes usually come with BMW's mid-life update (LCI) or a new emissions standard, so a car registered early in a year can still have the older engine. The VIN settles it.

Other cars with the same engine as the 335i

A replacement engine does not have to come from another 335i. These models left the factory with the same engine code, so a unit from any of them is a candidate donor once the sump, mounts and ancillaries are matched to your car.

N55B30: BMW F10 535i, BMW F20 M135i, BMW F22 M235i, BMW E70 X5 35i, BMW F25 X3 35i.

N55B30T0: BMW F10 535i, BMW F32 435i.

N55B30O0: BMW F22 M235i.

How to confirm your engine code

Because the 335i used more than one engine, the badge alone does not tell you which one your car has. The build date is the first clue; the VIN is the proof. Send us the last seven characters of the VIN and we read the engine code from BMW's records, or look for the code stamped on the block. How to find your BMW engine code.

Known 335i engine problems

The N55B30, N55B30T0 and N55B30O0 in the 335i share the known weak points of the N55 family. Full N55 guide.

Oil filter housing gasket. Leaks oil down the engine and onto belts.

Valve cover gasket. The plastic cover leaks and its built-in PCV can fail.

Electric water pump and thermostat. Fails around 100,000 km.

Charge pipe. The plastic charge pipe cracks under boost.

Wastegate rattle. The wastegate wears on high-mileage engines.

Oil pan gasket. Leaks on higher-mileage engines.

Symptoms to watch for on the 335i

Rattle for a few seconds after a cold start. The classic sign of a weak timing chain tensioner or stretched chain. It must be checked quickly: a chain that jumps a tooth can bend valves.

Whistle, loss of boost or limp mode. A split charge pipe, a sticking wastegate or worn turbo bearings. Check the pipes first, then the turbo shaft for play.

Poor low-down torque and uneven idle. VANOS seals or solenoids. The engine may run well at high revs but feel flat and lumpy at low speed.

Limp mode with a Valvetronic fault. The Valvetronic motor, its eccentric shaft sensor or the wiring. The engine runs on a reduced throttle until it is repaired.

Long cranking before the engine starts. On direct-injection engines, a weak high-pressure fuel pump or leaking injector lets pressure drop when the engine is off.

Looking after the 335i engine

• Oil: 5W-30 or 0W-30 BMW Longlife-01, about 6.5 litres.
• Service interval: Oil every 10,000 to 15,000 km.
• Timing drive: Timing chain at the front.
• Workshop notes: Replace the oil filter housing gasket and valve cover gasket before installing a used N55.

Buying a used engine for the 335i: checklist

1. Look at the oil and coolant. Clean oil without metal particles and coolant without oil are good signs. Milky oil, oily coolant or a burnt smell mean the engine needs further checks before it is fitted.
2. Ask how the donor car was damaged. Most good used engines come from cars with body damage. A front-end impact can crack sensors, the timing cover or the sump; a rear or side impact usually leaves the engine untouched. The yard records the damage on each unit.
3. Warranty terms in writing. Read what the warranty covers, how long it runs and what fitting conditions apply. Most warranties require a qualified workshop, new fluids and filters, and replacement of the cooling parts that caused the original failure.
4. Photographs from every side. Good suppliers photograph the actual engine you will receive. Look for the block stamp, the sump, the timing cover and any broken brackets or connectors in the pictures.
5. Compression or leak-down figures. Even compression across all cylinders tells you more than mileage. Ask for the figures, not just a pass or fail, and compare the highest and lowest readings: a spread above 10 to 15 percent deserves a question.
6. Turbocharger shaft play and oil. Rotate the compressor wheel by hand. A small amount of side play is normal; in-and-out play or wheel contact with the housing is not. Oil pooled in the intake or intercooler pipes points to worn seals.
7. Timing chain noise. Listen for a rattle at the front of the engine for the first seconds after a cold start. On an engine that cannot be run, look at the chain guides through the oil filler or with the valve cover off.
8. VANOS operation. Rough idle, a rattle from the front of the head and a loss of torque at low revs point to VANOS seals or solenoids. These are serviceable parts and are easier to renew with the engine out.
9. Double VANOS units and solenoids. Ask for the adaptation values or fault history if the engine was running. Solenoids are inexpensive and are often replaced as a matter of course on a used engine.
10. Valvetronic motor and eccentric shaft sensor. The Valvetronic motor and its sensor cause limp-mode faults when they fail. Inspect the connector and the seal around the motor for oil.
11. Injectors and high-pressure fuel pump. Direct-injection engines rely on high-pressure pumps and precise injectors. Ask whether the injectors are original or updated and whether there were fuel pressure faults.
12. Electric water pump. This engine uses an electric water pump. It fails without warning and needs a diagnostic bleeding routine when it is replaced or the system is refilled.

BMW 335i replacement engine cost

We currently hold 400 335i engine engines. The cheapest is 2.207,00 €, the most expensive 5.826,00 €, and half of them cost less than 4.027,00 €.

Prices depend on the exact version, the donor's mileage, how complete the engine is and the demand for that code. Higher-output versions, low mileage and dressed engines with turbo, injectors and ancillaries cost more; long blocks and higher mileage cost less.

335i engine prices by model year

Engines from 2005–2009 have a median of 4.563,00 €, while units from 2015–2019 sit at 4.043,00 €. Newer engines usually cost more because they come from younger donor cars with lower mileage and later updates.

335i engine prices by mileage

Mileage matters less than history on a well-maintained BMW engine, but it is a useful guide. A low-mileage unit from a younger car gives you more life for a modest premium.

78 of these come from F30 donor cars, priced from 2.218,00 € to 5.708,00 €. An engine from the same body is the most direct swap because the sump, mounts and ancillaries already match.

On top of the engine, budget for the workshop's labour and the parts that are best replaced while the engine is out: engine mounts, the rear main seal, cooling parts, a clutch or converter seal, fluids and filters.

Replacement engines in stock for the 335i

These 335i units are in our Hamburg yard right now. Each listing shows real photographs of the engine you receive, its mileage and what is fitted.

BMW F30 335i N55B30 Engine 2011, 84,200 km3.872,00 €BMW F30 335i N55B30 Engine 2016, 90,400 km4.186,00 €BMW F30 335i N55B30 Engine 2010, 40,300 km3.406,00 €BMW F30 335i N55B30 Engine 2010, 150,000 km4.359,00 €BMW F30 335i N55B30 Engine 2014, 110,900 km3.761,00 €BMW F30 335i N55B30 Engine 2013, 70,400 km3.568,00 €BMW F30 335i N55B30 Engine 2015, 76,700 km4.752,00 €BMW F30 335i N55B30 Engine 2015, 124,600 km3.854,00 €BMW F30 335i N55B30 Engine 2014, 107,000 km4.696,00 €BMW F30 335i N55B30 Engine 2012, 196,400 km3.624,00 €BMW F30 335i N55B30 Engine 2011, 63,100 km3.782,00 €BMW F30 335i N55B30 Engine 2016, 44,900 km4.141,00 €

BMW F30 335i N55B30 Engine 2011, 84,200 km — 3.872,00 €, reduced from 4.950,00 €. It comes from a 2011 donor car with 84,200 km, and 20 units are available. The listing shows every side of the engine and the fitted parts.

BMW F30 335i N55B30 Engine 2016, 90,400 km — 4.186,00 €, reduced from 5.650,00 €. It comes from a 2016 donor car with 90,400 km, and 25 units are available. The listing shows every side of the engine and the fitted parts.

BMW F30 335i N55B30 Engine 2010, 40,300 km — 3.406,00 €, reduced from 4.700,00 €. It comes from a 2010 donor car with 40,300 km, and 27 units are available. We can confirm fitment against your VIN the same day.

BMW F30 335i N55B30 Engine 2010, 150,000 km — 4.359,00 €, reduced from 5.050,00 €. It comes from a 2010 donor car with 150,000 km, and 23 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F30 335i N55B30 Engine 2014, 110,900 km — 3.761,00 €, reduced from 4.800,00 €. It comes from a 2014 donor car with 110,900 km, and 22 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F30 335i N55B30 Engine 2013, 70,400 km — 3.568,00 €, reduced from 4.650,00 €. It comes from a 2013 donor car with 70,400 km, and 24 units are available. The listing shows every side of the engine and the fitted parts.

BMW F30 335i N55B30 Engine 2015, 76,700 km — 4.752,00 €, reduced from 5.850,00 €. It comes from a 2015 donor car with 76,700 km, and 5 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F30 335i N55B30 Engine 2015, 124,600 km — 3.854,00 €, reduced from 4.850,00 €. It comes from a 2015 donor car with 124,600 km, and 16 units are available. We can confirm fitment against your VIN the same day.

BMW F30 335i N55B30 Engine 2014, 107,000 km — 4.696,00 €, reduced from 5.650,00 €. It comes from a 2014 donor car with 107,000 km, and 24 units are available. We can confirm fitment against your VIN the same day.

BMW F30 335i N55B30 Engine 2012, 196,400 km — 3.624,00 €, reduced from 4.800,00 €. It comes from a 2012 donor car with 196,400 km, and 30 units are available. The listing shows every side of the engine and the fitted parts.

BMW F30 335i N55B30 Engine 2011, 63,100 km — 3.782,00 €, reduced from 4.650,00 €. It comes from a 2011 donor car with 63,100 km, and 21 units are available. Ask the desk for compression figures or extra photographs before you order.

BMW F30 335i N55B30 Engine 2016, 44,900 km — 4.141,00 €, reduced from 5.200,00 €. It comes from a 2016 donor car with 44,900 km, and 16 units are available. Ask the desk for compression figures or extra photographs before you order.

Will it fit my 335i?

Will the N55B30T0 fit my BMW F30 335i?

The N55B30T0 is the original engine for the BMW F30 335i, which makes it the straightforward choice. The sixth 3 Series was built 2011–2019, and the N55B30T0 was produced 2009–2016, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F30 335i?

We have 1 N55B30T0 engine from F30 donor cars, priced from 2.218,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Will the N55B30O0 fit my BMW F30 335i?

For the BMW F30 335i, the N55B30O0 is the factory engine and the one to order. The sixth 3 Series was built 2011–2019, and the N55B30O0 was produced 2013–2016, so check that your car's build date falls inside that window. Confirm the drive type (rear-drive or xDrive), the gearbox (manual or automatic) and the emissions standard, because these can change the sump, the flywheel and the software. Send us the VIN and we check all of it for you.

How much is a replacement engine for a BMW F30 335i?

We have 1 N55B30O0 engine from F30 donor cars, priced from 2.533,00 €. Delivery to your door is included, and the engine carries a 12-month warranty when fitted by a qualified workshop. Add fitting labour and the parts you replace at the same time — seals, cooling parts and mounts — to estimate the total.

Engine swaps and upgrades for the 335i

These engines were fitted to other versions of the F30 at the factory, which makes them the most practical upgrades: the body was designed around them and many parts are shared.

Can I fit the B58B30 in my 335i?

Yes, it is one of the more common upgrades. Both are petrol inline-6 engines, so the mounting points are similar, but the B58B30 needs its own wiring and engine control unit, the matching gearbox or clutch, and often a different sump, cooling and exhaust. The gain is 14 hp and 50 Nm. In Germany and most of Europe an engine swap must be inspected and registered.

Fitting a replacement engine in the 335i

1. Inspect or replace the timing chain parts. Look at the guides and tensioner. On high-mileage engines, replacing them now costs far less than doing it later.
2. Prepare the turbo. Fit new oil feed and return seals, clean the intercooler and pipes of any oil or debris from the old engine, and prime the turbo with oil before starting.
3. Reset VANOS adaptations. Clear the VANOS adaptations so the ECU learns the camshaft positions of the new engine.
4. Teach the Valvetronic limit stops. Run the Valvetronic learning routine so the ECU knows the eccentric shaft limits.
5. Fill with the right oil and prime it. Fill with new oil of the correct specification and a new filter. Crank with the fuel and ignition disabled until oil pressure builds.
6. Coding and adaptations. On modern BMWs, the engine ECU must be matched to the car's immobiliser (CAS, FEM or BDC). Reset adaptations, register the battery and clear faults with diagnostic software.
7. First start and leak check. Start the engine, let it idle and watch oil pressure, temperature and fault codes. Check for leaks and bleed the cooling system.
8. First 1,000 km. Drive gently for the first few hundred kilometres, vary the engine speed and avoid full load. Change the oil and filter after about 1,000 km to remove any assembly debris.

The full fitting and first-start procedure.

335i engine questions

Will the N55B30 engine fit my BMW F30 335i?

Yes, if your BMW F30 335i was built with the N55B30. BMW used this 3.0 liter (2,979 cc) petrol engine with 225 kW (306 HP) in the F30 335i from about 2010 to 2017.

In our records the N55B30 is the engine for the F30 335i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F30 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

How much is a replacement N55B30 engine for a BMW F31 335i?

A used N55B30 for the BMW F31 335i costs from about 3.100 € to 4.850 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The N55B30 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

Can you check if an N55B30 fits my car with my VIN?

Yes, and it is free. Send the 17-character VIN of your car and, if you have it, the gearbox code. We check the engine family, the build year window and the parts your car needs.

For the N55B30, we confirm that your car was built with this code or with a version that can take it. BMW used it in the BMW F30 335i, BMW F31 335i, BMW E92 335i, BMW F32 435i and BMW F20 M135i and more.

We only reserve an engine once the match is confirmed, so you never pay for the wrong unit. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.

You can also use the VIN check on our site. It reads the year, the make, the model and the engine from the public vehicle register.

See all N55 Engines · Search N55B30 in the shop

Can I put an N55B30 engine in my BMW E39?

Yes. We sell conversion kits that fit the N55B30 into the BMW E39. The kit replaces the M52, M54 and M50, and works with the ZF GS6 and Getrag 420G.

You can buy the full package with an engine, or only the parts you need: complete conversion with engine, complete conversion, adapter plate, engine mount, wiring and ecu and cooling and exhaust.

A swap like this needs a skilled workshop. Mounts, the adapter, the wiring and the engine computer, the cooling and the exhaust all have to work together. Check your local road rules for engine swaps before you start.

Tell us your BMW E39's year and current set-up, and we suggest the right parts. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.

See all N55 BMW Conversion Kits · Conversion guide

How much is a replacement N55B30 engine for a BMW F32 435i?

A used N55B30 for the BMW F32 435i costs from about 3.100 € to 4.850 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The N55B30 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

How long does delivery of an N55B30 engine take?

Orders confirmed before 14:00 CET on a working day leave Hamburg the same day. Later and weekend orders leave the next working day. Delivery to the Netherlands, Belgium, Germany, France, Luxembourg and Denmark takes 1 to 3 working days.

Spain, Italy, Portugal, Poland, Czechia, Austria, Ireland, the Nordics and the Baltics take 2 to 5 working days. Greek and Spanish islands, Malta, Cyprus and remote areas take 4 to 8 working days. The UK and other countries outside the EU are quoted one by one.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Every engine is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped, then photographed before it leaves the yard.

You get a tracking number when the pallet is collected. Check the wrapping before you sign, and note any damage on the paperwork.

See all N55 Engines · Search N55B30 in the shop

How much is a replacement N55B30 engine for a BMW F25 X3 xDrive35i?

A used N55B30 for the BMW F25 X3 xDrive35i costs from about 3.100 € to 4.850 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The N55B30 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

Will the N55B30 engine fit my BMW F20 M135i?

Yes, if your BMW F20 M135i was built with the N55B30. BMW used this 3.0 liter (2,979 cc) petrol engine with 225 kW (306 HP) in the F20 M135i from about 2010 to 2017.

In our records the N55B30 is the engine for the F20 M135i, which makes the match simple. Still, check the code on your old engine or send us your VIN.

Also tell us if your F20 has a manual or an automatic gearbox. The flywheel or the flex plate and some sensors depend on it.

Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

How much is a replacement N55B30 engine for a BMW F31 335i?

A used N55B30 for the BMW F31 335i costs from about 3.100 € to 4.850 € in our yard. The price depends on the year, the mileage and the parts that come with the engine.

Shipping is a flat 249 € per order. It is added once at checkout and printed on the invoice, so there is no extra fee later. Inside the EU there is no import duty. Outside the EU, the receiver pays local duty and VAT.

A replacement engine is often much cheaper than rebuilding a damaged one, and much faster. The N55B30 you buy is photographed and checked in Hamburg before it is listed.

Eligible engines come with a 12 months warranty from the delivery date. It covers internal mechanical failure under normal use and correct fitting by a qualified mechanic or workshop. Not sure? Send us your VIN and your gearbox code. We match the engine family, the year window and the parts on the engine before anything is reserved, and the check is free.

See all N55 Engines · Search N55B30 in the shop

Can I put an N55B30 engine in my BMW E36?

Yes. We sell conversion kits that fit the N55B30 into the BMW E36. The kit replaces the M52, M54 and M50, and works with the ZF GS6 and Getrag 420G.

You can buy the full package with an engine, or only the parts you need: complete conversion with engine, complete conversion, adapter plate, engine mount, wiring and ecu and cooling and exhaust.

A swap like this needs a skilled workshop. Mounts, the adapter, the wiring and the engine computer, the cooling and the exhaust all have to work together. Check your local road rules for engine swaps before you start.

Tell us your BMW E36's year and current set-up, and we suggest the right parts. You can reach the Hamburg desk by email at autowerkeengines@gmail.com, or by phone and WhatsApp on +49 15510 030835, Monday to Friday, 9:00 to 16:00 CET.

See all N55 BMW Conversion Kits · Conversion guide

Delivery, warranty and payment

Every 335i engine we sell is drained, sealed at each opening, strapped to a heat-treated pallet and shrink-wrapped before it leaves Hamburg. You receive photographs of the packed engine and a tracking number.

Delivery is door to door and included in the price. Most European addresses receive the engine within five to ten working days; Germany and its neighbours are usually faster.

Every engine carries a 12-month warranty on eligible internal failure when a qualified workshop fits it with new fluids and filters. Payment is by card, bank transfer or crypto; your invoice is emailed as soon as you order.

All F30 engines · N55 engine guide · BMW 335i engines for sale · Send us your VIN