N54 Engine

N54 Engine for Sale at Reliable Used Part

If you are searching for an N54 Engine for sale, Reliable Used Part makes it easier to find a reliable match. This listing covers BMW 135i, 335i, 535i and Z4 for model years 2006–2010, so you can compare the options that suit your vehicle before you buy. Browse our used engine inventory or ask our team for help choosing the right unit.

Current options at Reliable Used Part for this engine are listed in the $2,500–$7,000 range. The final price depends on the specific unit and the option you select, so contact our team to confirm availability, condition, included components, and delivery details before placing your order. Ordering an N54 Engine online should be simple, which is why our team can answer fitment questions before you buy.

What Is the N54 Engine?

The N54 Engine is BMW’s 3.0-liter twin-turbocharged inline-six found in the 135i, 335i, 535i and Z4.

Like any engine, it should be matched to your vehicle by model year, trim, and configuration. For a general overview of how this component works, see the Wikipedia entry on the internal combustion engine.

N54 Engine Compatibility and Fitment

The N54 Engine listing is intended for BMW 135i, 335i, 535i and Z4 for model years 2006–2010. Exact compatibility depends on the model year, trim, engine, and drivetrain, so verify fitment before ordering. Whether you are completing a repair or a full rebuild, the N54 Engine is one of the most important parts to match correctly.

• Models: 135i, 335i, 535i and Z4
• Model years: 2006–2010
• Engine and transmission options: 3.0L Twin-Turbo Inline-6 and N54B30

How to Confirm Fitment Before You Buy

Choosing the wrong engine is a costly mistake. Before ordering, run through these checks:

• Match the engine code, or the eighth character of your VIN, with the engine options listed for your vehicle.
• Confirm the model year, trim, displacement, and fuel type (gasoline, diesel, or hybrid).
• Note features that affect compatibility, such as turbocharging, direct injection, or variable valve timing.
• Check whether you also need related components such as the intake, wiring harness, sensors, or ECU.
• Ask our team to confirm availability, included components, and condition details before you order.

You can decode your VIN with the NHTSA VIN decoder and check for open safety recalls on the NHTSA recalls page before you start a major repair.

Signs You May Need a Replacement Engine

Not sure whether you need a replacement engine? Watch for these warning signs:

• Persistent knocking, ticking, or tapping noises from inside the engine
• Excessive oil consumption, oil leaks, or blue smoke from the exhaust
• Repeated overheating or coolant loss without an external leak
• Rough running, misfires, or low compression on one or more cylinders
• Metal particles in the oil, or a check engine light that returns after repairs

These symptoms can point to serious internal wear, but smaller faults can cause them too, so have a qualified technician diagnose the vehicle before you commit to a replacement.

Why Buy a Used Engine from Reliable Used Part?

Reliable Used Part supplies used engines to customers across the United States. Each N54 Engine listing is backed by our team, who can help confirm fitment, current availability, and warranty terms before you commit. Nationwide USA shipping is available, and you can contact Reliable Used Part for a quote, freight estimate, or delivery timeline. Ask us about current N54 Engine stock if you do not see the exact option you need.

Working on more than one component? You may also want to look at our S58 Engine, BMW M3 Engine and BMW M4 Engine, or browse the full used engine inventory. A properly matched N54 Engine helps your vehicle run smoothly after installation. You can also see all BMW used engine listings.

N54 Engine FAQs