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Dayco 71519 Radiator Coolant Hose - Upper
| Brand | Dayco 71519 |
|---|---|
| Position | Upper |
| Color | Black |
| End 1 Inside Diameter | 1 1/4 |
| End 2 Inside Diameter | 1 1/4 |
| Hose Type | Single I.D. Hose |
| Material | EPDM |
| SAE Specification | SAE J20R4 Class D-1, SAE J1684 Type EC |
| Trunk Height | 14 |
| Product line | Curved Radiator Hose |
| Fits | Buick, Oldsmobile, Pontiac, and Chevrolet · 28 vehicles |
Curved hose design. Helps route coolant smoothly through the cooling system.
EPDM construction. Resists heat and coolant exposure for dependable service.
Single I.D. hose. A straightforward coolant hose for replacement use.
Cross-references ACDelco 22267M, ACDelco 22606M and CARQUEST 21948 for the same application. See all 18.
Dayco 71519 Curved Radiator Hose Overview
The Dayco 71519 curved radiator hose is a direct-fit upper coolant hose for select GM vehicles that need a 1 1/4-inch inside diameter at both ends. Built from EPDM rubber and finished in black, it is shaped for the upper radiator routing used on applications such as the Buick LeSabre, Buick Park Avenue, and Oldsmobile 98.
Dayco’s Curved Radiator Hose line focuses on OE-style hose geometry and material selection for cooling-system service. This hose follows the specified curved profile and SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for the listed applications.
Key Features
- Part number 71519 for upper radiator hose replacement
- EPDM construction for cooling-system use
- Black finish for a clean OE-style appearance
- 1 1/4-inch inside diameter at both ends
- Single I.D. hose design with curved routing
- Meets SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Compatible with select Buick, Oldsmobile, Pontiac, and Chevrolet applications
Detailed Description
Dayco 71519 is a curved radiator coolant hose made for upper hose routing on specific GM platforms. It is listed for 1991-1995 Buick Park Avenue, 1992-1995 Buick LeSabre, 1995 Buick Riviera, 1992-1995 Oldsmobile 88, 1991-1995 Oldsmobile 98, 1992-1994 Pontiac Bonneville, 1992-1993 Chevrolet Lumina APV, 1992-1993 Oldsmobile Silhouette, and 1992-1993 Pontiac Trans Sport. If you are searching for a Dayco 71519 upper radiator hose for Buick LeSabre or Oldsmobile 98 cooling-system service, this part matches the listed fitment and hose dimensions.
This hose is formed from EPDM, a common material for radiator and heater hose service, and uses a curved shape to follow the factory coolant path. The 1 1/4-inch inside diameter on both ends supports the specified connection points, while the SAE ratings provide a clear reference for the hose construction standard. This part cross-references Gates 21948 for the same application.
Common Problems This Hose Can Address
- Cracked or split upper radiator hose
- Coolant leaks at the hose body or connection points
- Softening, swelling, or deterioration from age and heat
- Incorrect hose shape on upper coolant routing
- Restricted cooling-system service due to a worn hose
Installation Notes and Tips
Verify the vehicle year, make, model, and upper hose routing before installation. Match the 1 1/4-inch inside diameter at both ends to the existing connection points and inspect the radiator neck and engine-side fitting for corrosion, residue, or damage before installing the new hose. Replace clamps if they show wear, and refill and bleed the cooling system according to the vehicle service procedure after installation.
Quality Assurance
This Dayco radiator coolant hose is built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications for the listed applications. Its EPDM construction and application-specific curved design support OE-style replacement service for compatible Buick, Oldsmobile, Pontiac, and Chevrolet models.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1995 | Buick | LeSabre | — | — | Upper | Curved Radiator Hose |
| 1995 | Buick | Park Avenue | — | — | Upper | Curved Radiator Hose |
| 1995 | Buick | Riviera | — | — | Upper | Curved Radiator Hose |
| 1995 | Oldsmobile | 88 | — | — | Upper | Curved Radiator Hose |
| 1995 | Oldsmobile | 98 | — | — | Upper | Curved Radiator Hose |
| 1994 | Buick | LeSabre | — | — | Upper | Curved Radiator Hose |
| 1994 | Buick | Park Avenue | — | — | Upper | Curved Radiator Hose |
| 1994 | Oldsmobile | 88 | — | — | Upper | Curved Radiator Hose |
| 1994 | Oldsmobile | 98 | — | — | Upper | Curved Radiator Hose |
| 1994 | Pontiac | Bonneville | — | — | Upper | Curved Radiator Hose |
| 1993 | Buick | LeSabre | — | — | Upper | Curved Radiator Hose |
| 1993 | Buick | Park Avenue | — | — | Upper | Curved Radiator Hose |
| 1993 | Chevrolet | Lumina APV | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1993 | Oldsmobile | 88 | — | — | Upper | Curved Radiator Hose |
| 1993 | Oldsmobile | 98 | — | — | Upper | Curved Radiator Hose |
| 1993 | Oldsmobile | Silhouette | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1993 | Pontiac | Bonneville | — | — | Upper | Curved Radiator Hose |
| 1993 | Pontiac | Trans Sport | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1992 | Buick | LeSabre | — | — | Upper | Curved Radiator Hose |
| 1992 | Buick | Park Avenue | — | — | Upper | Curved Radiator Hose |
| 1992 | Chevrolet | Lumina APV | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1992 | Oldsmobile | 88 | — | — | Upper | Curved Radiator Hose |
| 1992 | Oldsmobile | 98 | — | — | Upper | Curved Radiator Hose |
| 1992 | Oldsmobile | Silhouette | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1992 | Pontiac | Bonneville | — | — | Upper | Curved Radiator Hose |
| 1992 | Pontiac | Trans Sport | 3.8L | V6 | Upper | Curved Radiator Hose |
| 1991 | Buick | Park Avenue | — | — | Upper | Curved Radiator Hose |
| 1991 | Oldsmobile | 98 | — | — | Upper | Curved Radiator Hose |
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