Racing Machine Engine Replacement: Fitting 120007-120011
By Carrera； Der Spezialist | Published: 2026-11-01
Category: How-to Guides
Swap a tired Carrera racing machine engine the right way. Confirm the part number, remove the old unit, and install the replacement without damaging the chassis.
Quick answer
Replace the engine only after you match your racing machine's part number to 120007, 120008, 120009, or 120011. Then remove the old engine, transfer the mounting hardware, and seat the new Carrera engine without forcing the housing.
Why the part number decides the job
Carrera lists this replacement engine under four part numbers, so the same-looking motor may not fit every racing machine. The catalog does not list separate dimensions or connector types for each number, so the part number is your only reliable fit check before ordering. If your machine's number is not one of these four, stop and verify with the seller rather than guessing.
When a swap is the right move
A replacement engine makes sense when the old motor no longer runs reliably and the rest of the machine is sound. If the car still drives but feels slow, check the usual causes first: dirty pick-up shoes, worn tires, or a weak connection. Replacing the engine will not fix a chassis or electrical fault elsewhere.
Engine replacement steps
- Confirm the part number: Find the part number on your racing machine or its documentation and match it to 120007, 120008, 120009, or 120011. Common mistake: ordering by appearance alone. Checkpoint: if the number does not match, do not proceed.
- Power down and open the housing: Switch the machine off and remove the body or housing screws, keeping them in a tray. Common mistake: rushing and stripping screw heads. Checkpoint: the machine must be fully off before you touch the engine.
- Free the old engine: Disconnect the engine wires and remove its mounting screws, noting how the engine sits in the chassis. Common mistake: pulling the wires instead of the connector. Checkpoint: take a photo before removal if the routing is unclear.
- Transfer the mounting hardware: Move any reusable screws, clips, or spacers from the old engine to the new one if the replacement does not include them. Common mistake: losing small parts. Checkpoint: compare the old and new engine side by side before installing.
- Seat and secure the new engine: Place the new engine in the same position, reconnect the wires, and tighten the mounting screws evenly. Common mistake: overtightening and cracking the housing. Checkpoint: the engine should sit flush with no force needed.
- Test before closing up: Reconnect the power briefly and check that the engine runs and the wheels turn freely. Common mistake: closing the housing before testing. Checkpoint: if the engine does not run, recheck the wire connections before reassembling.
Product facts
- 1 Engine for Racing Machine (120007, 120008, 120009, 120011): Carrera replacement engine listed under part numbers 120007, 120008, 120009, and 120011. Check your machine's number against this list before ordering, because the engine is only confirmed for those four part numbers.
1 Engine for Racing Machine (120007, 120008, 120009, 120011)
