Engine mount. Porsche 996 1997-05  ❭  99337504908

Engine Mount. Part Number:  99337504908   — this is a hydro-elastic (fluid-filled) engine mount, superseding older numbers like  99337504905, and 99337504906 .  Fitment is side-specific (left or right), two are required per vehicle.



Fits:
Porsche 996 C2 3.4L 1997-08/01Porsche 996 C4 3.4L 1997-08/01Porsche 996 C2 3.6L 09/01-2005Porsche 996 C4 3.6L 09/01-2005Porsche 996 C4S 3.6L 09/01-2005

Why Replace It, Engine mounts are crucial for:

Locating and supporting the engineAbsorbing vibration and engine torque under acceleration, braking, and corneringWhen this mount deteriorates or fails, you can expect, Increased vibration transmitted to the cabin, steering, or pedalsClunks, bangs, or loud noises during acceleration, deceleration, or gear changes from engine movement against the chassisVisual signs such as leaking black fluid from the mount, sagging of tailpipes (due to dropped mounting), or visible damage to rubber or metal components 

Common Failure Causes

Age-related rubber degradation: over time, rubber hardens, cracks or de-bonds, causing loss of damping and allowing engine movementFluid leakage (hydraulic version): loss of damping fluid due to seal failure accelerates failureFluid contamination: oil, coolant, or other contaminants degrade the rubber materialVehicle abuse or stress: aggressive driving, hard launches, or previous accidents can warp or break mountsWorn or cracked brackets: even if the rubber is intact, the aluminium bracket can be damaged or corroded, reducing effectiveness 

(the older part number was 99337504905, 99337504906).

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Diagram ref no 2.

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