Product Description
Genuine AC Delco EP166 Electric Fuel Pump (NOS)
Restore the reliable fuel delivery of your 1980s GM vehicle with this genuine AC Delco EP166 Electric Fuel Pump. This is a vintage New Old Stock (NOS) part, manufactured in the USA by AC Delco (General Motors). This in-tank electric pump is specifically designed for Throttle Body Injection (TBI) applications on a wide range of mid-1980s GM Passenger Cars and 1987 R/V Series Trucks.
This part is designed for the in-tank position on specific 1985-1988 Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles. It is a low-pressure turbine pump tailored for TBI engines (Fuel Injection), not for carbureted or high-pressure MPFI systems.
Key Features:
- Part Number: EP166 (AC Delco)
- Interchange / Replaces OEM: GM 25115428, Airtex E3902, Carter P74045
- Position: In-Tank (Electric)
- System Fitment: Throttle Body Injection (TBI) Only
- Flow Specs: Low Pressure (approx. 9-13 PSI for TBI)
- Origin: Made in USA (Vintage Stock)
- Condition: New Old Stock (NOS)
Verified Vehicle Fitment:
| Make | Model | Year | Engine | Notes |
| Buick | Century, Electra, LeSabre, Skyhawk, Skylark, Somerset | 1985-1988 | 2.5L, 3.0L, 3.8L | TBI Models |
| Cadillac | Cimarron, DeVille, Fleetwood | 1985-1986 | 2.8L, 4.1L V8 | FWD TBI |
| Chevrolet / GMC | R10, V10, R20, V20, R30, V30 (Pickup/Suburban) | 1987 | 5.0L, 5.7L, 7.4L | TBI (Fuel Injected) |
| Oldsmobile | Cutlass Ciera, Delta 88, 98, Calais, Firenza | 1985-1987 | 2.5L, 3.0L, 3.8L | TBI Models |
| Pontiac | 6000, Bonneville, Fiero, Grand Am, Sunbird | 1985-1987 | 2.5L, 2.8L, 3.8L | TBI Models |
Fits Years:
1985 1986 1987 1988
Unbeatable Prices & Expectations
We scour the country to find the best deals on NOS and NORS parts so we can pass the savings on to you. Our prices are often significantly lower than major competitors.
Please Note: All vehicle fitment data is manually researched from vintage catalogs. While we strive for accuracy, historical data can sometimes be imperfect. Additionally, this part may fit other vehicle makes, models, and years not explicitly listed. We strongly encourage you to perform your own due diligence by comparing our provided photos and specifications to your original part to ensure proper fitment before purchasing.
