Ignition Distributor Vacuum Advance, 911 (74-77)
|Type:||Rauch & Spiegel|
Ignition Distributor Vacuum Advance for 911 (1974-1975) and 911 S (1976-1977) models. Manufactured and individually tested to meet a much tighter tolerance band than original equipment published specifications. Each unit includes a certificate of test showing its' individual vacuum/advance response plotted over an expanded-scale factory vacuum advance curve.
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