Part Number: 40193 (AC Type 40193)
Type: Mechanical Fuel Pump (2-Port / Standard Performance Big Block)
OEM Reference: GM 6440193, GM 6415958
Note: This is the correct factory fuel pump for 1966 Chevrolet Big Block engines (396/427) with Standard Performance (Oval Port heads). It typically features a crimped canister design. It is NOT intended for Special High Performance (L78 375HP or L72 425HP) engines, which utilized a different high-flow pump (AC 40358 or similar).
fits
| Make |
Model |
Year |
Engine |
Special Notes |
| Chevrolet |
Bel Air |
1966 |
V8-396ci (6.5L) |
325 HP (L35) |
| Chevrolet |
Bel Air |
1966 |
V8-427ci (7.0L) |
390 HP (L36) |
| Chevrolet |
Biscayne |
1966 |
V8-396ci (6.5L) |
325 HP (L35) |
| Chevrolet |
Biscayne |
1966 |
V8-427ci (7.0L) |
390 HP (L36) |
| Chevrolet |
Caprice |
1966 |
V8-396ci (6.5L) |
325 HP (L35) |
| Chevrolet |
Caprice |
1966 |
V8-427ci (7.0L) |
390 HP (L36) |
| Chevrolet |
Chevelle |
1966 |
V8-396ci (6.5L) |
SS 396 / 325 HP & 360 HP |
| Chevrolet |
El Camino |
1966 |
V8-396ci (6.5L) |
SS 396 / 325 HP & 360 HP |
| Chevrolet |
Impala |
1966 |
V8-396ci (6.5L) |
325 HP (L35) |
| Chevrolet |
Impala |
1966 |
V8-427ci (7.0L) |
390 HP (L36) |
| Chevrolet |
Malibu |
1966 |
V8-396ci (6.5L) |
SS 396 / 325 HP & 360 HP |
| Chevrolet |
Station Wagon |
1966 |
V8-396ci (6.5L) |
All Big Block Models |
| Chevrolet |
Station Wagon |
1966 |
V8-427ci (7.0L) |
All Big Block Models |
All our pumps are proudly Made in the USA!
If the unit is a rebuilt pump, please note it was professionally reconditioned by a U.S. rebuilder near Denver, CO, between the late 1980s and early 1990s.
Regarding Photos: Due to our volume of identical, interchangeable inventory, we use representative stock photos for this model. The image is for reference only and may depict a specific manufacturer (e.g., 'AC'). You will receive a pump that meets all listed specifications, which may be from the manufacturer shown or a fully equivalent alternative.
