OE Quality
60-Day Returns

Gates 21425 Radiator Coolant Hose - Lower
Overview of Gates Molded Coolant Hose 21425
The Gates Molded Coolant Hose 21425 is engineered for reliable cooling system performance in select Cadillac models. Designed with durable EPDM material and molded construction, this radiator coolant hose ensures a precise fit and long-lasting service for vehicles like the Cadillac DeVille and Fleetwood.
- Constructed from high-quality EPDM material for heat and chemical resistance
- Molded design for exact fit and secure installation
- Contains an internal spring to prevent hose collapse under pressure
- Centerline length of 13.9 inches (353 mm) for proper routing
- End 1 inside diameter: 1.56 inches (40 mm); End 2 inside diameter: 1.62 inches (41 mm)
Detailed Product Description
The Gates Molded Coolant Hose 21425 is a radiator coolant hose specifically designed for Cadillac 60 Special, Commercial Chassis, DeVille, and Fleetwood models. Made from EPDM, a synthetic rubber known for its resistance to heat, ozone, and coolant chemicals, this hose maintains integrity under demanding engine conditions. The molded construction ensures a precise shape that matches the original equipment, reducing the risk of leaks and improving coolant flow. An internal spring reinforcement prevents hose collapse during high vacuum or pressure situations, maintaining consistent coolant circulation.
The Molded Coolant Hose product line by Gates focuses on delivering hoses that meet exact OEM specifications with molded shapes for direct replacement. This line is intended to simplify installation and improve durability compared to generic or universal hoses.
Applications and Problem Solving
- Replaces worn or cracked radiator coolant hoses in Cadillac DeVille and Fleetwood models
- Prevents coolant leaks caused by hose deterioration or improper fit
- Eliminates hose collapse issues under engine vacuum with internal spring support
- Restores proper coolant flow to avoid engine overheating
- Addresses fitment problems common with non-molded or universal hoses
Installation Notes and Tips
- Verify compatibility with Cadillac 60 Special, Commercial Chassis, DeVille, or Fleetwood before installation
- Ensure all clamps and fittings are securely tightened to prevent leaks
- Inspect surrounding components for wear or damage during replacement
- Flush cooling system if necessary to remove debris before installing new hose
- Follow vehicle manufacturer torque specifications for hose clamps
Quality Assurance and Warranty
Gates Molded Coolant Hose 21425 is manufactured to meet or exceed OEM standards for durability and performance. The EPDM material and molded design contribute to extended service life under typical operating conditions. While specific warranty details may vary, Gates products generally come with a limited warranty against defects in material and workmanship. Consult product documentation or authorized distributors for exact warranty terms.
| Brand | Gates |
|---|---|
| Part Number | 21425 |
| Position | Molded Coolant Hose, Lower |
| 0 | |
| Yes | |
| Branch Quantity | 0 |
| Centerline Length | 13.9 |
| Centerline Length | 353 |
| Contains Spring | Yes |
| End 1 Inside Diameter | 1.56 |
| End 1 Inside Diameter | 40 |
| End 2 Inside Diameter | 1.62 |
| End 2 Inside Diameter | 41 |
| Material | EPDM |
| Modular Hose | No |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 25 vehicles. Search below:
| Year | Make | Model | Drive Type | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 1993 | Cadillac | 60 Special | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1993 | Cadillac | DeVille | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1992 | Cadillac | DeVille | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1992 | Cadillac | Fleetwood | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1991 | Cadillac | Commercial Chassis | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1991 | Cadillac | DeVille | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1991 | Cadillac | Fleetwood | 4.9L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1990 | Cadillac | Commercial Chassis | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1990 | Cadillac | DeVille | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1990 | Cadillac | Fleetwood | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1989 | Cadillac | Commercial Chassis | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1989 | Cadillac | DeVille | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1989 | Cadillac | Fleetwood | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1988 | Cadillac | Commercial Chassis | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1988 | Cadillac | DeVille | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1988 | Cadillac | Fleetwood | 4.5L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1987 | Cadillac | Commercial Chassis | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1987 | Cadillac | DeVille | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1987 | Cadillac | Fleetwood | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1986 | Cadillac | Commercial Chassis | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1986 | Cadillac | DeVille | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1986 | Cadillac | Fleetwood | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1985 | Cadillac | Commercial Chassis | FWD | 4.1L | V8 | GAS | Lower | Molded Coolant Hose |
| 1985 | Cadillac | DeVille | 4.1L | V8 | GAS | Lower | Molded Coolant Hose | |
| 1985 | Cadillac | Fleetwood | FWD | 4.1L | V8 | GAS | Lower | Molded Coolant Hose |
* 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.