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Global Parts 8211234 HVAC Heater Control Valve - Front
| Brand | Global Parts 8211234 |
|---|---|
| Position | Front |
| Type | Vac close; 5/8 x 5/8; vacuum controlled heater valve 5/8 x 5/8 |
| Fits | Buick, Cadillac, Chevrolet, Ford, Oldsmobile, and Pontiac · 144 vehicles |
Vacuum controlled valve. Regulates heater coolant flow with a 5/8 x 5/8 connection.
Heater control valve. Helps manage coolant transfer in the heating system.
Cross-references Four Seasons 74603, UAC HV1000C and 15-151 for the same application. See all 15.
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Heater Control Valve for Classic GM HVAC Systems
Global Parts 8211234 is a vacuum controlled heater valve for vehicles with a 5/8 x 5/8 hose connection. It regulates coolant flow to the heater core, helping maintain proper cabin heat control in classic Cadillac, Buick, Pontiac, Chevrolet, Oldsmobile, and Ford applications. This Global Parts 8211234 heater control valve is a direct-fit service part for many HVAC systems that use a vacuum-operated heater valve.
Key Features
- Vacuum controlled heater valve with Vac Close operation
- 5/8 x 5/8 hose connection size
- Used in HVAC temperature control systems with a heater control valve
- Fits a wide range of classic Cadillac, Buick, Pontiac, Chevrolet, Oldsmobile, and Ford models
- Cross-references Four Seasons 74603 and UAC HV1000C for the same application
Product Details
This heater control valve is built for vehicles that route heater coolant through a vacuum-actuated valve. In applications such as Cadillac DeVille, Pontiac Grand Prix, Buick Regal, and Ford Thunderbird, the valve helps control coolant flow to the heater core so the HVAC system can deliver the requested cabin temperature. Part number 8211234 is listed across multiple GM and Ford fitments, including models with heater valve or HVAC systems with a heater control valve.
Compatible vehicle coverage includes 1967-1969 Ford Thunderbird, 1969-1972 Ford Mustang with air conditioning or FVS, 1971-1977 Cadillac DeVille, 1971-1976 Cadillac Eldorado, 1971-1976 Cadillac Fleetwood, 1971-1975 Buick LeSabre, 1971-1975 Buick Riviera, 1971-1977 Pontiac Bonneville, 1973-1977 Pontiac LeMans, 1974-1975 Chevrolet Corvette, and 1978-1984 Cadillac DeVille. Global Parts 8211234 is also listed for 1980-1981 Buick Century, 1980-1981 Buick Regal, and 1980-1981 Pontiac Firebird applications with a heater control valve.
What It Helps Address
- Weak or inconsistent cabin heat
- Coolant flow that does not shut off at the heater core
- Vacuum-operated heater valve failure
- Temperature control issues in classic HVAC systems
- Replacement needs for aging heater valve assemblies
Installation Notes and Tips
Verify hose size, vacuum operation, and valve orientation before installation. This part is listed for Vac Close applications with a 5/8 x 5/8 connection, and one fitment note specifies a push-in port on 1980 Oldsmobile Cutlass Salon. Confirm the vehicle’s HVAC layout and existing heater valve style against the original part before replacement. Fits 1978-1984 Cadillac DeVille, N/A; Fits 1978-1981 Buick Regal, N/A; Fits 1980-1981 Pontiac Firebird, N/A.
Quality Assurance
Global Parts 8211234 is cataloged as an HVAC heater control valve with defined interchange references and vehicle-specific fitment data for classic applications. Use the listed fitment and hose specifications to confirm the correct replacement before service.
This part fits 144 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Body Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|---|
| 1984 | Cadillac | Commercial Chassis | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1984 | Cadillac | DeVille | — | — | 4.1L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1984 | Cadillac | Fleetwood | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1984 | Cadillac | Fleetwood | — | — | 4.1L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1983 | Cadillac | Commercial Chassis | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1983 | Cadillac | DeVille | — | — | 4.1L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1983 | Cadillac | Fleetwood | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1983 | Cadillac | Fleetwood | — | — | 4.1L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1982 | Cadillac | Commercial Chassis | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1982 | Cadillac | DeVille | — | — | 4.1L | V8 | GAS | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1982 | Cadillac | Fleetwood | — | — | 4.1L | V8 | GAS | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1982 | Cadillac | Fleetwood | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Buick | Century | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Buick | Regal | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Cadillac | Commercial Chassis | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Cadillac | DeVille | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Cadillac | Eldorado | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Cadillac | Fleetwood | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Cadillac | Seville | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Pontiac | Bonneville | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Pontiac | Firebird | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Pontiac | Firebird | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Pontiac | Grand Prix | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1981 | Pontiac | LeMans | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | Century | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | Century | — | — | 5.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | LeSabre | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | Regal | — | — | 5.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | Regal | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Buick | Regal | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Cadillac | Commercial Chassis | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Cadillac | DeVille | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Cadillac | Eldorado | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Cadillac | Fleetwood | — | — | 6.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Oldsmobile | Cutlass | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Oldsmobile | Cutlass Calais | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Oldsmobile | Cutlass Salon | — | — | 4.3L | V8 | — | N/A | Push In Port |
| 1980 | Oldsmobile | Cutlass Supreme | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Oldsmobile | Delta 88 | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Bonneville | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Bonneville | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Firebird | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Firebird | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Grand Am | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Grand Prix | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | Grand Prix | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | LeMans | — | — | 4.3L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1980 | Pontiac | LeMans | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Buick | Regal | — | — | 5.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Cadillac | Commercial Chassis | — | — | 7.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Cadillac | DeVille | — | — | 7.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Cadillac | Fleetwood | — | — | 7.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Pontiac | Bonneville | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1979 | Pontiac | Grand Prix | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Buick | Regal | — | — | 5.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Buick | Riviera | — | — | 6.6L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Cadillac | DeVille | — | — | 7.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Cadillac | Eldorado | — | — | 7.0L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Pontiac | Bonneville | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Pontiac | Bonneville | — | — | 6.6L | V8 | GAS | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1978 | Pontiac | Grand Prix | — | — | 4.9L | V8 | — | N/A | Fits HVAC systems with a Heater Control Valve. |
| 1977 | Buick | LeSabre | — | Coupe | 4.9L | V8 | — | N/A | Heater Valve |
| 1977 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1977 | Pontiac | Bonneville | — | — | 5.7L | V8 | — | N/A | Heater Valve |
| 1977 | Pontiac | Catalina | — | — | 5.7L | V8 | — | N/A | Heater Valve |
| 1977 | Pontiac | Grand LeMans | — | — | — | — | — | N/A | Heater Valve |
| 1977 | Pontiac | Grand Prix | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1977 | Pontiac | LeMans | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1976 | Cadillac | Commercial Chassis | — | — | — | — | — | Front | Heater Valve |
| 1976 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1976 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1976 | Cadillac | Fleetwood | 75 | — | — | — | — | Front | Heater Valve |
| 1976 | Cadillac | Seville | — | — | — | — | — | N/A | Heater Valve |
| 1976 | Pontiac | Bonneville | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1976 | Pontiac | Catalina | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1976 | Pontiac | Grand LeMans | — | — | — | — | — | N/A | Heater Valve |
| 1976 | Pontiac | Grand Prix | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1976 | Pontiac | LeMans | — | — | 5.7L | V8 | — | N/A | Heater Valve |
| 1975 | Buick | Century | — | Wagon | 5.7L | V8 | — | N/A | Heater Valve |
| 1975 | Buick | LeSabre | — | Coupe | 5.7L | V8 | — | N/A | Heater Valve |
| 1975 | Buick | Regal | — | Coupe | 3.8L | V6 | — | N/A | Heater Valve |
| 1975 | Buick | Riviera | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Cadillac | Commercial Chassis | — | — | — | — | — | Front | Heater Valve |
| 1975 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Cadillac | Fleetwood | — | — | — | — | — | Front | Heater Valve |
| 1975 | Chevrolet | Corvette | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Chevrolet | El Camino | — | — | 4.1L | L6 | — | N/A | Heater Valve |
| 1975 | Chevrolet | Malibu | — | — | 4.1L | L6 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | 98 | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | Custom Cruiser | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | Cutlass | — | — | 4.1L | L6 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | Cutlass Supreme | — | — | 4.1L | L6 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | Delta 88 | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1975 | Oldsmobile | Omega | — | — | 4.1L | L6 | — | N/A | Heater Valve |
| 1975 | Pontiac | Bonneville | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Pontiac | Catalina | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Pontiac | Grand Am | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Pontiac | Grand LeMans | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Pontiac | Grand Prix | — | — | — | — | — | N/A | Heater Valve |
| 1975 | Pontiac | LeMans | — | — | 6.6L | V8 | — | N/A | Heater Valve |
| 1974 | Buick | Century | — | Sedan | 7.5L | V8 | — | N/A | Heater Valve |
| 1974 | Buick | LeSabre | — | Convertible | 7.5L | V8 | — | N/A | Heater Valve |
| 1974 | Buick | Regal | — | Sedan | 7.5L | V8 | — | N/A | Heater Valve |
| 1974 | Buick | Riviera | — | — | — | — | — | N/A | Heater Valve |
| 1974 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1974 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1974 | Cadillac | Fleetwood | — | — | — | — | — | Front | Heater Valve |
| 1974 | Chevrolet | Corvette | — | — | — | — | — | N/A | Heater Valve |
| 1974 | Pontiac | Grand Am | — | — | — | — | — | N/A | Heater Valve |
| 1974 | Pontiac | LeMans | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Buick | Century | — | Wagon | 7.5L | V8 | — | N/A | Heater Valve |
| 1973 | Buick | LeSabre | — | Coupe | 7.5L | V8 | — | N/A | Heater Valve |
| 1973 | Buick | Regal | — | Coupe | 5.7L | V8 | — | N/A | Heater Valve |
| 1973 | Buick | Riviera | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Cadillac | Fleetwood | — | — | — | — | — | Front | Heater Valve |
| 1973 | Pontiac | Bonneville | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Pontiac | Catalina | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Pontiac | Grand Am | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Pontiac | Grand Prix | — | — | — | — | — | N/A | Heater Valve |
| 1973 | Pontiac | LeMans | — | — | — | — | — | N/A | Heater Valve |
| 1972 | Buick | LeSabre | — | Sedan | 7.5L | V8 | — | N/A | Heater Valve |
| 1972 | Buick | Riviera | — | — | — | — | — | N/A | Heater Valve |
| 1972 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1972 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1972 | Cadillac | Fleetwood | — | — | — | — | — | Front | Heater Valve |
| 1972 | Ford | Mustang | — | — | — | — | — | N/A | with Air Conditioning or FVS |
| 1972 | Pontiac | Bonneville | — | — | — | — | — | N/A | Heater Valve |
| 1972 | Pontiac | Catalina | — | — | — | — | — | N/A | Heater Valve |
| 1971 | Buick | LeSabre | — | Hardtop | 7.5L | V8 | — | N/A | Heater Valve |
| 1971 | Buick | Riviera | — | — | — | — | — | N/A | Heater Valve |
| 1971 | Cadillac | DeVille | — | — | — | — | — | N/A | Heater Valve |
| 1971 | Cadillac | Eldorado | — | — | — | — | — | N/A | Heater Valve |
| 1971 | Cadillac | Fleetwood | — | — | — | — | — | Front | Heater Valve |
| 1971 | Ford | Mustang | — | — | — | — | — | N/A | with Air Conditioning or FVS |
| 1971 | Pontiac | Bonneville | — | — | — | — | — | N/A | Heater Valve |
| 1971 | Pontiac | Catalina | — | — | — | — | — | N/A | Heater Valve |
| 1970 | Ford | Mustang | — | — | — | — | — | N/A | with Air Conditioning or FVS |
| 1969 | Ford | Mustang | — | — | — | — | — | N/A | with Air Conditioning or FVS |
| 1969 | Ford | Thunderbird | — | — | — | — | — | N/A | Heater Valve |
| 1968 | Ford | Thunderbird | — | — | 7.0L | V8 | — | N/A | Heater Valve |
| 1967 | Ford | Thunderbird | — | — | 7.0L | V8 | — | N/A | Heater Valve |
| No rows match your filter. | |||||||||
Directly replaces or cross-references 15 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Four Seasons — 74603UAC — HV1000C15-15115-510115-5810155101155810801034130030311300303219193201ACX010366AHVH550HV1000RD-5-11604-0P