RETURNS NOT ACCEPTED for: Pigtails, Harnesses, or Extensions. These are custom built per order. Please ask any questions before ordering.


EFI 58x Crankshaft Reluctor for BBC Single or Double Roller Timing Set 5.315 in Diameter

Part Number: 120-00148
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EFI Connection's 58x crankshaft reluctor was designed to generate the 58 pulse crank signal required by the GM Gen IV LS-Series ECMs. This reluctor is 5.315 inches in diameter and cannot be used with timing covers that receive 4.000 inch crankshaft reluctors.