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Alternator Belt Pulley Shim. Porsche 964 C2 / C4 1989-94 ❭ 96410626800
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
The Porsche Alternator Belt Pulley Shim is a genuine OEM spacer washer used in the alternator belt pulley assembly. Designed to fine-tune pulley alignment, this 0.5 mm shim ensures the alternator belt runs true, preventing misalignment, premature wear, and belt noise.
Sold Each.
Fits:
- Porsche 964 (911) C2 1989-93
- Porsche 964 (911) C4 1989-93
What This Product Does:
- The shim adjusts the axial spacing (depth) of the alternator pulley relative to the housing or bearing so that the alternator belt alignment is correct.
- It ensures the pulley is neither too far in nor too far out, thereby avoiding misalignment with the belt path, which could cause wear, noise, or belt slip.
- Proper spacing is critical for belt tension, pulley alignment, and smooth operation of the alternator / drive belt.
- There is belt misalignment — the belt rides off center or rubs on pulley edges or guides.
- Unusual belt noise such as squealing or chirping, especially under load or at startup, which might indicate pulley or belt misalignment.
- Excessive belt or pulley wear — uneven wear on belt ribs or pulley surfaces.
- When installing a replacement alternator / pulley you find the original shim is missing, damaged, or of unknown thickness.
- You notice vibration or play in the alternator pulley assembly, possibly due to improper spacing.
Why Replacement Matters:
- Belt Misalignment – Without correct spacing, the alternator belt may track incorrectly, slip, or ride off the pulley edges.
- Premature Wear – Misaligned belts put stress on both the belt and pulley, causing them to wear out faster.
- Noise and Vibration – A missing or damaged shim often results in squealing, chirping, or vibration under load.
- Charging Issues – A poorly aligned belt can slip, reducing alternator efficiency and risking undercharging of the battery.
- Avoidable Damage – Replacing a small shim prevents more expensive damage to the alternator, pulleys, and belt system.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
96410626800
The product you are viewing cross references to these numbers
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