OE Quality
60-Day Returns

One Stop Solutions 977 Radiator
Reliable Radiator Replacement for Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac
The One Stop Solutions radiator part number 977 is engineered to provide dependable cooling performance for select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models including Cavalier, Cimarron, Firenza, J2000, Skyhawk, and Sunbird. Designed as a direct replacement, this radiator supports engine efficiency and temperature regulation under various driving conditions.
- Hassle free installation with drop-in fit, form, and function
- OE performance with premium grade tubes, fins, headers, and plastic tanks
- Engineering enhancements improve cooling capacity and extend service life
- Components fitted and torqued to factory specifications for reliable operation
- Includes concentric engine oil cooler with 1 1/4 inch diameter
- Crossflow core design with 19 11/16 inch height and 15 1/16 inch width
- Core thickness of 1 inch and single core row for efficient heat dissipation
- 100% tested up to three times during production for quality assurance
Technical Specifications and Design Features
This radiator features a crossflow core constructed from premium PA material, measuring 19 11/16 inches in height, 15 1/16 inches in width, and 1 inch in thickness. The plastic tanks and headers are designed for durability and corrosion resistance. Both inlet and outlet headers measure 16 5/8 inches in length and 2 7/16 inches in width, with inlet and outlet diameters of 1 5/16 inches, ensuring compatibility with the vehicle’s cooling system. The included concentric engine oil cooler with fittings spaced 11 1/2 inches apart supports engine oil temperature regulation, enhancing overall engine performance. This radiator does not include a transmission oil cooler.
Compatible Vehicles and Applications
This radiator is compatible with the following makes and models:
- Buick: Skyhawk
- Cadillac: Cimarron
- Chevrolet: Cavalier
- Oldsmobile: Firenza, J2000
- Pontiac: Sunbird
It is designed to replace original equipment radiators in these vehicles, maintaining proper cooling system function and engine temperature control.
Common Issues Addressed by This Radiator
- Overheating due to radiator core damage or clogging
- Coolant leaks from cracked or worn plastic tanks
- Reduced cooling efficiency from corroded or bent fins
- Engine oil temperature regulation problems due to faulty oil cooler
- Failure of original radiator components causing engine overheating
Installation Notes and Tips
Installation of the One Stop Solutions radiator 977 is straightforward with its drop-in design. Ensure all fittings and hoses match the specified inlet and outlet diameters of 1 5/16 inches. Verify that the engine oil cooler fittings align with the 11 1/2 inch spacing. Use factory torque specifications when securing components to avoid leaks or damage. It is recommended to flush the cooling system before installation to prevent contamination and ensure optimal performance.
Quality Assurance and Warranty Information
Each radiator undergoes rigorous testing up to three times during production to verify performance and durability. Components are assembled and torqued to factory specifications to meet OE standards. The product includes engineering enhancements aimed at improving cooling efficiency and extending service life. Warranty details should be confirmed with the distributor or manufacturer.
| Brand | One Stop Solutions |
| Part Number | 977 |
| Cap Included | NO |
| Core Height | 19 11/16 |
| Core Material | PA |
| Core Row Quantity | 1 |
| Core Thickness | 1 |
| Core Thickness | 26 |
| Core Width | 15 1/16 |
| Down Flow Or Cross Flow Type | CROSSFLOW |
| Engine Oil Cooler Diameter | 1 1/4 |
| Engine Oil Cooler Included | YES |
| Engine Oil Cooler Type | CONCENTRIC |
| Inlet Diameter | 1 5/16 |
| Inlet Header Length | 16 5/8 |
| Inlet Header Width | 2 7/16 |
| Oil Cooler Fittings Distance Apart | 11 1/2 |
| Outlet Diameter | 1 5/16 |
| Outlet Header Length | 16 5/8 |
| Outlet Header Width | 2 7/16 |
| Tank Material | PLASTIC |
| Transmission Oil Cooler Included | NO |
| Transmission Oil Cooler Type | NONE |
This part fits 34 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1994 | Chevrolet | Cavalier | 2.2L | L4 | N/A | 1-5/16" CORE |
| 1993 | Chevrolet | Cavalier | 2.2L | L4 | N/A | 1-5/16" CORE |
| 1992 | Chevrolet | Cavalier | 2.2L | L4 | N/A | 1-5/16" CORE |
| 1991 | Chevrolet | Cavalier | 2.2L | L4 | N/A | 1-5/16" CORE |
| 1990 | Chevrolet | Cavalier | 2.2L | L4 | N/A | 1-5/16" CORE |
| 1989 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1989 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 1-5/16" CORE |
| 1988 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1988 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1988 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1987 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1987 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1987 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1986 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1986 | Cadillac | Cimarron | 2.0L | L4 | N/A | |
| 1986 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1986 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1986 | Pontiac | Sunbird | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1985 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1985 | Cadillac | Cimarron | 2.0L | L4 | N/A | |
| 1985 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1985 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1984 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1984 | Cadillac | Cimarron | 2.0L | L4 | N/A | |
| 1984 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1984 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1983 | Buick | Skyhawk | 2.0L | L4 | N/A | 19 5/8" CORE |
| 1983 | Cadillac | Cimarron | 2.0L | L4 | N/A | |
| 1983 | Chevrolet | Cavalier | 2.0L | L4 | N/A | 19" CORE |
| 1983 | Oldsmobile | Firenza | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1983 | Pontiac | J2000 | 2.0L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1982 | Cadillac | Cimarron | 1.8L | L4 | N/A | |
| 1982 | Chevrolet | Cavalier | 1.8L | L4 | N/A | 19" CORE; 2 ROW Equivalent |
| 1982 | Oldsmobile | Firenza | 1.8L | L4 | N/A | 19" CORE; 2 ROW Equivalent; w/SENSOR |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.