Fuel Pump 40451 Buick 1966 Special Skylark LeSabre 225 300 340 Late Production

Part Number: 40451 (AC Type 40451)

Type: Mechanical Fuel Pump (2-Port / Late 1966 Design)

Replaces OEM Reference: GM 6440451, GM 6416506, GM 6416507

Note: This pump is correct for Late 1966 production models (typically identified as engines built after serial number 109). It is a 2-Port pump (1 Inlet, 1 Outlet) designed for vehicles without a vapor return line (Standard Cooling / Without A/C). Early 1966 models may use AC 40001.

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