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Part Number: 40250 (AC Type 40250)
Type: Mechanical Fuel Pump (2-Port / Single Action)
Replaces OEM Reference: GM 6440250, GM 5621732
Note: This pump is typically found on 1964-1965 models. It fits the Buick-manufactured "Fireball" V6 and "Wildcat" 300 V8. It does not fit the 1961-1963 Aluminum 215 V8, nor does it fit the 1966+ 340 V8.
fits
| Make | Model | Year | Engine | Special Notes |
| Buick | LeSabre | 1964-1965 | V8-300ci (4.9L) | Wildcat 310 / 355 |
| Buick | Skylark | 1964-1965 | V6-225ci (3.7L) | Fireball V6 |
| Buick | Skylark | 1964-1965 | V8-300ci (4.9L) | Wildcat 310 / 355 |
| Buick | Special | 1964-1965 | V6-225ci (3.7L) | Fireball V6 |
| Buick | Special | 1964-1965 | V8-300ci (4.9L) | Wildcat 310 / 355 |
| Buick | Sportwagon | 1964-1965 | V8-300ci (4.9L) | All Models |
| Oldsmobile | Cutlass | 1964-1965 | V6-225ci (3.7L) | Buick V6 Engine Option |
| Oldsmobile | F85 | 1964-1965 | V6-225ci (3.7L) | Buick V6 Engine Option |
| Oldsmobile | Vista Cruiser | 1964-1965 | V6-225ci (3.7L) | Buick V6 Engine Option |
1964 1965