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Ancillaries to move across when you fit a replacement engine

Ancillaries checklist at our Hamburg yard

Which parts usually move from the old BMW engine to the replacement, and how to check them before they go back on.

  • engine ancillaries transfer
  • what to swap onto new engine
  • BMW alternator on replacement
  • engine swap parts list

Also searched as parts to transfer engine, ac compressor engine swap, bmw engine accessories.

Why parts move across

Ancillaries checklist real photo 1

A used engine is sold as photographed. Your car may have a different alternator, a different power-steering pump or air-conditioning compressor, and a different intake. The safe job is to lay both engines side by side and move only what does not match.

Bavarian Engines Werke would rather you ask for a photo than discover a missing bracket after the truck has left.

The usual list

Ancillaries checklist real photo 2

Compare the alternator, starter, air-conditioning compressor, power-steering pump where fitted, inlet manifold, throttle body, exhaust manifolds if they differ, sensors, brackets and the wiring harness section that belongs to the car.

Flywheel or flexplate, clutch and torque converter are their own decision. They are not 'just ancillaries' if they are worn.

Test before you fit them

A noisy bearing in the compressor or a tired alternator will sound like a bad engine on the first start. Spin them by hand. Check plugs for broken pins. Label every sensor so it returns to the same place.

Do not transfer a cracked charge pipe or a swollen coolant flange. Those are the parts that should be new.

What should be new

Seals you have disturbed, the oil filter, oil, coolant, and often the water pump and thermostat if the family is known for them. The rear main seal is cheap with the engine out and miserable later.

We do not include a box of new seals unless the listing says so.

Ordering the engine

Read the photos and write down what you will move across before you pay. If a compressor is not in the pictures and you need one, ask. Do not assume.

The engine warranty of up to 12 months is about eligible internal failure, not about a compressor you transferred.

Warranty

Many engines come with up to 12 months warranty. A proper workshop must fit the engine. The warranty is for a fault inside the engine. It does not cover the wrong engine, a dry start, the wrong oil, or damage done after you open the crate.

Shipping

Crate shipping from Hamburg costs 299 EUR. We pack the engine in a strong crate and send it to the address on your order. You need a forklift or an engine crane to unload it.

FAQ

Are ancillaries included?

Only what the photographs show.

Should I move the old injectors?

Only if the workshop wants that set and can code them. Label them.

Is the flywheel an ancillary?

Treat it separately. Check it. A worn dual-mass flywheel should not go back on.

Do you ship ancillaries checklist to my door?

Yes. Crate shipping from Hamburg costs 299 EUR to the address on your order.

How long is the warranty?

Up to 12 months on many engines, for a fault inside the engine, after a proper fit. See the warranty page for the full rules.

Are the photos of the real engine?

Yes. When you buy Bavarian Engines Werke engines from us, the photos are real photos from our yard, not made-up pictures.

Can you check my VIN first?

Yes. The VIN check is free. Send it before you pay and we confirm the engine fits.

Browse parts and enginesFree VIN check

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