Used Corvair GM Alternator Fan & Pulley Nut — 1915172 (will throw in matching washer)
type: Unknown Type
Vendor: CorvairFarmer
Description:
Correct thin‑profile alternator fan & pulley retaining nut for all 1965–69 Corvair models using the Delco 10DN alternator. This is the proper 11/16‑20 thread nut used to secure the fan → pulley → spacer stack‑up on the alternator shaft. GM standardized this nut across all Delcotron alternators from 1964–81, making this the correct service replacement for Corvair restorations.
Features:
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GM Part Number: 1915172
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Correct thin‑wall profile
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11/16‑20 thread
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Fits all Delco 10DN alternators
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Zinc‑plated finish (as original)
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Perfect for concours, restoration, or service work
FITMENT CHART — GM 1915172
GM Alternator Fan/Pulley Nut — 11/16‑20 Thread
| Year Range | GM Division | Models | Alternator Type | Notes |
|---|---|---|---|---|
| 1964–1969 | Chevrolet | Corvair | 10DN (externally regulated) | Direct OE fit |
| 1963–1972 | Chevrolet | Camaro, Chevelle, Nova, Impala, Trucks | 10DN | Same shaft/nut spec |
| 1965–1976 | Pontiac | GTO, LeMans, Firebird | 10DN/10SI | Interchangeable |
| 1965–1976 | Oldsmobile | Cutlass, 442 | 10DN/10SI | Interchangeable |
| 1965–1976 | Buick | Skylark, GS | 10DN/10SI | Interchangeable |
| 1964–1981 | GM Trucks | C/K Series | 10DN/10SI | GM standardized nut |
| 1971–1981 | All GM | All divisions | 10SI | Service replacement |
