Mercedes‑Benz Engine Stabilizer/Engine Mount A451 240 01 09

Description

The part number A4512400109 (often shown as A 451 240 01 09) is an OEM engine mount (sometimes described as “engine stabilizer mount”) used by Mercedes‑Benz and Smart vehicles. Spareto+2AUTODOC UK+2
Key points:

• It’s listed in parts catalogues as “Engine mounting, mounting, holder” for Mercedes‑Benz / Smart. Spareto

• One seller describes it as “Genuine Mercedes‑Benz Engine Stabilizer Mount 451‑240‑01‑09”. eBay

• Another listing indicates replacement part compatibility and describes it as a “Rubber Engine Mount” for Benz W451 with OE A4512400109. GUANGZHOU IVAN ZONEKO AUTO PARTS CO.,LTD

• Function: The mount supports the engine assembly within the vehicle frame/sub‑frame, isolates engine vibration and helps maintain correct engine alignment and structural attachment.

• Fitment: Often referenced in relation to models like Smart (1.0 T / M132) and Mercedes trunking off that chassis family. eBay+1

• Aftermarket/alternative part cross‑references: E.g., FEBI Bilstein 32516 listed as equivalent to A4512400109. Spareto+1

• Important: When this mount wears out or fails, typical symptoms include engine vibration felt in the cabin, engine movement under load/acceleration, potential mis‑alignment of other components, and increased stress/ wear on associated mounts or drivetrain parts.