Support mounts Set of 3 for front axle final drive. Porsche Cayenne 955 / 957  ❭  95534933700

The part reference 955 349 337 00 is a rubber mounting / support mount for the front-axle final drive / differential, isolating and supporting the front differential (front drive unit) relative to the chassis. There are 3 of the same on each car, this is a SET OF 3

Its purpose is to absorb and damp vibrations, reduce noise transmitted to the chassis, and accommodate slight relative motion between the drivetrain and the vehicle body 

Fits:

• Porsche 955 Cayenne 3.2L V6 2003-06
• Porsche 955 Cayenne S 4.5L V8 2003-06
• Porsche 955 Cayenne Turbo 4.5L 2003-06
• Porsche 955 Cayenne Turbo S 4.5L 2006>>
• Porsche 957 Cayenne 3.0L Diesel 2007-10
• Porsche 957 Cayenne 3.6L 2007-10
• Porsche 957 Cayenne S/GTS 4.8L 2007-10   (excluding Turbo)

Why these should be replaced / when to suspect failure

• This part is not “optional” — it is essential for maintaining proper alignment, damping, and support of the front differential. But because of its rubber nature and exposure, it is a known wear/failure point. Below are reasons and symptoms for replacement:
• Rubber degradation (cracking, hardening, tearing). Over time, the rubber can become brittle, crack, or split from repeated stress cycles, heat, chemical exposure (oil, road salt, etc.). This reduces its damping ability.
• Delamination / bond failure. The bonding between the rubber and the metal interfaces can fail, leading to slippage or separation under load.
• Excessive deformation / sagging. As the rubber softens or wears, the mount may deform under load, causing misalignment or increased movement under torque.
• Fatigue / wear from repeated cycles. Especially under harsh driving conditions (off-road, heavy loads, aggressive acceleration/shifting), the stress cycles on the mount accelerate wear. Some aftermarket writeups claim that the factory rubber design is prone to “premature Drive Shaft Support failure” because of constant stress on the rubber.
• Heat / ozone / environmental damage. Exposure to high temperatures, undercarriage heat, moisture, road debris, and ozone accelerates rubber aging.
• Load shift or impact damage. If the vehicle strikes a pothole or the differential experiences shock loads, the mount may crack or tear.

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Diagram ref no 13

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