/live/media/DY/DY_71950_Fro.jpg)
Dayco 71950 Radiator Coolant Hose - Lower
| Brand | Dayco 71950 |
|---|---|
| Position | Lower |
| 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 | 12 |
| Product line | Curved Radiator Hose |
| Fits | Buick, Chevrolet, Pontiac, and Oldsmobile · 30 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. Uniform inside diameter supports consistent coolant flow.
Cross-references ACDelco 22278M, ACDelco 22538M and ACDelco 22574M for the same application. See all 25.
Dayco 71950 Curved Radiator Hose
The Dayco 71950 curved radiator hose is a lower coolant hose built for specific GM applications that require a 1 1/4 in. inside diameter at both ends. Made from EPDM and finished in black, it is shaped to route coolant cleanly through the engine bay on vehicles such as the Buick Rendezvous, Chevrolet Equinox, Pontiac Aztek, Pontiac Montana, Oldsmobile Silhouette, and Pontiac Trans Sport.
Key Features
- EPDM construction for coolant-system service
- Black curved radiator hose design for lower hose routing
- 1 1/4 in. inside diameter at both ends
- Single I.D. hose configuration
- Built to SAE J20R4 Class D-1 and SAE J1684 Type EC specifications
- Direct-fit replacement for select GM cooling system applications
Product Details
Dayco Curved Radiator Hose 71950 is part of the Dayco Curved Radiator Hose line, which focuses on application-specific hose shapes and dimensions for cooling-system service. This lower radiator coolant hose is engineered for vehicles that need a curved EPDM hose with matching end diameters and standard SAE coolant-hose specifications. It cross-references ACDelco 22278M and Gates 21991 for the same application.
Compatible With 2002-2007 Buick Rendezvous, Lower; 2005 Chevrolet Equinox, Lower; 2001-2005 Pontiac Aztek, Lower; 1999-2005 Pontiac Montana, Lower; 1997-2004 Oldsmobile Silhouette, Lower; and 1997-1999 Pontiac Trans Sport, Lower. The Dayco 71950 part number is commonly searched for lower radiator hose replacement on these GM platforms.
Common Cooling System Issues It Can Address
- Cracked or hardened lower radiator hose material
- Coolant seepage at the hose body or connection points
- Collapsed or softened hose sections from age and heat cycling
- Incorrect hose shape or length after prior repairs
- Restricted coolant flow caused by a deteriorated hose
Installation Notes and Tips
Verify the end inside diameter, hose routing, and lower-position fitment before installation. Inspect the mating necks, clamps, and surrounding cooling-system components for wear or corrosion before transferring the new hose into service. Confirm the hose follows the original curved routing without twist or kinking.
Quality Assurance
This hose is manufactured to SAE J20R4 Class D-1 and SAE J1684 Type EC requirements for radiator coolant hose applications. Dayco 71950 is built as an OE-style replacement for select GM cooling systems and is specified for the listed vehicle applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2007 | Buick | Rendezvous | — | — | Lower | Curved Radiator Hose |
| 2006 | Buick | Rendezvous | 3.5L | V6 | Lower | Curved Radiator Hose |
| 2005 | Buick | Rendezvous | 3.4L | V6 | Lower | Curved Radiator Hose |
| 2005 | Chevrolet | Equinox | — | — | Lower | Curved Radiator Hose |
| 2005 | Pontiac | Aztek | — | — | Lower | Curved Radiator Hose |
| 2005 | Pontiac | Montana | 3.4L | V6 | Lower | Curved Radiator Hose |
| 2004 | Buick | Rendezvous | 3.4L | V6 | Lower | Curved Radiator Hose |
| 2004 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 2004 | Pontiac | Aztek | — | — | Lower | Curved Radiator Hose |
| 2004 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 2003 | Buick | Rendezvous | — | — | Lower | Curved Radiator Hose |
| 2003 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 2003 | Pontiac | Aztek | — | — | Lower | Curved Radiator Hose |
| 2003 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 2002 | Buick | Rendezvous | — | — | Lower | Curved Radiator Hose |
| 2002 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 2002 | Pontiac | Aztek | — | — | Lower | Curved Radiator Hose |
| 2002 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 2001 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 2001 | Pontiac | Aztek | — | — | Lower | Curved Radiator Hose |
| 2001 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 2000 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 2000 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 1999 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 1999 | Pontiac | Montana | — | — | Lower | Curved Radiator Hose |
| 1999 | Pontiac | Trans Sport | — | — | Lower | Curved Radiator Hose |
| 1998 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 1998 | Pontiac | Trans Sport | — | — | Lower | Curved Radiator Hose |
| 1997 | Oldsmobile | Silhouette | — | — | Lower | Curved Radiator Hose |
| 1997 | Pontiac | Trans Sport | — | — | Lower | Curved Radiator Hose |
| No rows match your filter. | ||||||