| Also known as | E4564 |
| Diagram | Fig. 1 — CRANKSHAFT AND CONNECTING RODS · ref 26 |
| Subsystem | engine bottom |
| Listed in parts books | 1967–1968, 1970–1971, 1974, 1976–1980 |
Timing pinion
Crankshaft timing pinion gear for the engine bottom end, also listed under the older E4564 number.
The 70-4564 timing pinion is a gear that fits on the crankshaft and drives the timing side gear train. It shows up in the parts book under the CRANKSHAFT AND CONNECTING RODS figure, and it's also known by the older E4564 number if you're working from an earlier parts list.
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This is a mechanical timing gear, not an electrical timing component - it's part of what keeps the valve gear and ignition components running in step with the crank. The catalog record for this one spans a wide run of years, so it's been a long-running part in the engine bottom end.
If you're pulling the timing cover and inspecting the gear train, check the teeth on this pinion for wear or chipping before you put things back together. Confirm fitment against your specific engine before ordering, since the catalog listing here doesn't narrow things down to one model.
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