What this guide covers
The N54 powered early 335i, 535i, 135i, and X6 35i cars with twin turbos. Later N55 cars look similar but are a different family.
Buyers often search for low-mileage N54 units for swaps or replacements. The listing must show that engine’s photos.
Fitment
Confirm N54 vs N55 on the plate. Manifolds, turbos, and fuel systems differ.
Send the VIN for E90, E60, E71, and Z4 applications before payment.
What the workshop checks
Look for oil in the intake, turbo play, and injector seepage in the photos. Ask for compression if it is not written on the page.
A tidy bay photo is not enough — you need the stamp and the underside.
How to choose a listing
Prefer a listing with clear injector and turbo photos. Match the year band to the car you are building.
Warranty
Eligible engines carry a warranty of up to 12 months after a correct installation by a workshop. The warranty covers eligible internal failure. It does not cover a mismatched fitment, a dry start, the wrong oil, or damage caused after the crate is opened.
Shipping
Crane crates from Hamburg is a flat 299,00 €. The engine is packed for freight and delivered to the address on the order. A forklift or an engine crane is required at delivery. The shipment is arranged to the destination the buyer provides.
FAQ
Does n54 engine guide include door-to-door delivery?
Yes. Shipping is a flat 299,00 € to the address on the order, from the workshop in Hamburg.
How long is the warranty?
Up to 12 months on eligible internal failure after a correct installation. The warranty page has the full terms.
Are the photographs of the engine being sold?
Yes. Covers and pictures in these guides are workshop photographs of listed engines, not generated pictures.
Shop N54 enginesFree VIN check
