Earl's Racing Products Head Bolt Set-12 Point head - TBS-003ERL ignition-system This B&M throttle position sensor

This B&M throttle position sensor is used for carbureted engines

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and Terminator X EFI

4L V8 1970 - 1976 Chevrolet Impala 454/7

DV integrated into the compressor cover

Earl's Racing Products Head Bolt Set-12 Point head - TBS-003ERL ignition-system This B&M throttle position sensorOverview: Earl's Racing Products head bolts are made from premium quality 170,000 psi chromemoly alloy steel (about 15% stronger than Grade 8). These bolts have a reduced wrench size (choose from 12 point or hex head) for extra socket clearance (provides extra clearance to rocker arms when re torqueing heads). The wide flanged head provided more support for the extra thick chromemoly washers. These head bolts are reusable and are the ideal way to