Vacuum Limiter - 911 | 928 | 1978-1983 99753733302 Visual highlights include the bold

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The JWest pivot uses a spherical bearing that can take much greater load

Sure-Lock Vacuum Cup: Holds the bridge securely in place during repair

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Vacuum Limiter - 911 | 928 | 1978-1983 99753733302 Visual highlights include the boldVacuum Limiter for Porsche 911 (1978 1983), 928 (1978 1982) Models. The Vacuum Limiter for Porsche 911 and 928 regulates vacuum pressure to protect your engines vacuum system from excessive pressure fluctuations. Designed for a precise fit, it ensures consistent engine performance and helps maintain the reliability of vacuum operated components. A vital replacement part to keep your Porsche running smoothly and efficiently.