| Diagram | Fig. 2 — CRANKCASE · ref 1 |
| Subsystem | engine bottom |
| Listed in parts books | 1974 |
Crankcase Drive Side
Drive side crankcase half, part 71-3677, one of the two main castings forming the engine's bottom end.
This is the drive side crankcase half, part number 71-3677, one of the two main castings that make up the bottom end of the engine. Our catalog record for this one is thin — a single listing tied to 1974 — and the figure title just confirms it's a crankcase piece, without spelling out much more.
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A drive side case is the half of the engine casing that carries the primary drive components, and it mates up with its matching left-hand or timing-side counterpart to form the complete crankcase assembly. Beyond that, we don't have enough in our records to tell you which specific model or engine family this exact casting was cataloged for.
If you're trying to match this against an existing engine or a numbers-matching rebuild, give us a call and we'll go over what we know and help confirm it's the right casting before you order.
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