Vaico V30-1255 Differential Mount Bushing - Rear

Rear Differential Mount Bushing for Mercedes-Benz

The Vaico V30-1255 is a rear differential mount bushing built for Mercedes-Benz driveline service where the original rubber-metal support has worn, cracked, or softened. With OE reference 129 351 21 42, this bushing helps restore stable differential mounting on a wide range of Mercedes-Benz C-Class, CLK-Class, E-Class, and SLK/SLC models.

VAICO focuses on OE-style replacement parts for European vehicles, and the VAICO product line is commonly used for direct-fit driveline and chassis repair applications. This differential mount bushing follows the original mounting style and dimensions for a precise service replacement.

Key Features

• Part number: V30-1255
• Category: driveline and axles bushing
• Rear differential mount bushing for Mercedes-Benz applications
• Rubber-metal mount construction for controlled support and vibration isolation
• Dimensions: 32 mm height, 66 mm length, 66 mm width
• OE reference: 129 351 21 42
• Cross-reference: Mercedes-Benz A 129 351 21 42

Detailed Description

Use the Vaico V30-1255 when servicing the rear differential mount on Mercedes-Benz vehicles that call for OE number 1293512142. This bushing is listed for rear-position applications across models such as the Mercedes-Benz C230, C320, C350, CLK320, CLK550, E320, E430, E55 AMG, SLK350, SLK55 AMG, and SLC300. The rubber-metal design supports the differential housing while helping maintain driveline alignment and reduce unwanted movement under load.

For fitment-focused searches, this part is a direct replacement for rear differential mount bushing service on Mercedes-Benz C-Class rear differential mount repairs, Mercedes-Benz E-Class rear driveline repairs, and Mercedes-Benz SLK/SLC rear axle support applications. Part number V30-1255 is also referenced by OE number 129 351 21 42 for the same application.

What It Helps Address

• Excess movement at the rear differential mount
• Clunking or knocking from worn driveline bushings
• Vibration transfer through the rear axle area
• Degraded rubber support from age and heat exposure
• Loose-feeling differential mounting during acceleration or deceleration

Installation Notes and Tips

Confirm OE number 1293512142 and verify the rear-position fitment before installation. Compare the original bushing dimensions to the listed 32 mm height and 66 mm length and width to ensure the replacement matches the vehicle’s mount. Because this is a rubber-metal mount, proper pressing and alignment tools are typically required during service.

Quality Assurance

VAICO replacement parts are built for OE-style service applications and are cataloged for direct-fit Mercedes-Benz driveline repair use. This part is identified for the specified OE cross-reference and vehicle fitment listed above.