Product Description
Genuine Four Seasons 74691 Heater Control Valve (NORS)
Restore the heating efficiency of your classic GM vehicle with this genuine Four Seasons 74691 Heater Control Valve. This is a vintage New Old Replacement Stock (NORS) part. It regulates the flow of hot coolant to the heater core via vacuum control.
This part is designed for the Heater Hose position on specific 1976-1990 General Motors vehicles (Chevrolet, Buick, Oldsmobile, Pontiac). Note: This is a Vacuum-Closed, Non-Bypass valve.
Key Features:
- Part Number: 74691 (Four Seasons)
- Interchange / Replaces OEM: GM 22502236, GM 22514878, ACDelco 15-5219
- Position: Heater Hose
- Specs: Vacuum Operation / Non-Bypass / 5/8" & 3/4" Ports
- Origin: Made in USA (Vintage Stock)
- Condition: NORS (New Old Replacement Stock)
Verified Vehicle Fitment:
| Make | Model | Year | Engine | Notes |
| Buick / Olds / Pontiac | Century / Cutlass / Regal / Grand Prix | 1976-1987 | All | Verify Vacuum Operation |
| Chevrolet | Impala / Caprice / Monte Carlo | 1980-1990 | All | Verify Vacuum Operation |
Fits Years:
1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990
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.
