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Gates 21931 Radiator Coolant Hose - Lower
Lower Coolant Hose for Porsche 944 and 968
Gates 21931 is a molded radiator coolant hose built to match OEM-style dimensions for lower cooling-system routing. It is made from EPDM and plastic and formed to the correct shape for a direct replacement on select Porsche applications.
Key Features
- Molded coolant hose for lower radiator hose routing
- EPDM and plastic construction for cooling-system service
- Centerline length: 15.9 in. (404 mm)
- End 1 inside diameter: 1.44 in. (37 mm)
- End 2 inside diameter: 2.44 in. (62 mm)
- No spring, no modular sections, and no quick-connect fittings
- Gates Molded Coolant Hose line covers upper, lower, bypass, heater, and other coolant applications
Product Details
Gates 21931 is part of the Molded Coolant Hose line, a replacement hose family engineered to follow OEM-quality specifications for common cooling-system service points. This lower radiator coolant hose is shaped for the correct routing and fit on Porsche 944 and Porsche 968 models, helping restore proper coolant flow without the need to source the hose from an OE dealer. This part cross-references Four Seasons 8621 for the same application.
What This Hose Helps Address
- Cracked or deteriorated lower radiator hose material
- Coolant leaks at the hose body or connection points
- Incorrect hose shape after prior replacement work
- Restricted coolant flow caused by aged hose collapse or deformation
- Cooling-system service on Porsche 944 and Porsche 968 lower hose routing
Installation Notes and Tips
Verify hose routing, end diameters, and centerline length before installation. Inspect adjoining pipes, clamps, and sealing surfaces for wear or corrosion before transferring the new hose into place. Confirm vehicle application by year, make, model, and lower-position fitment: Fits 1986-1989 Porsche 944, lower; Fits 1992-1995 Porsche 968, lower.
Quality Assurance
Gates manufactures this molded coolant hose to OEM-quality specifications for replacement use in the cooling system. Part number 21931 is built for direct-fit service on the listed Porsche applications.
| Brand | Gates |
|---|---|
| Part Number | 21931 |
| Position | Molded Coolant Hose, Lower |
| Material | Epdm, plastic |
| End 1 Inside Diameter | 1.44 |
| End 1 Inside Diameter | 37 |
| End 2 Inside Diameter | 2.44 |
| End 2 Inside Diameter | 62 |
| Contains Spring | No |
| Centerline Length | 15.9 |
| Centerline Length | 404 |
| Branch Quantity | 0 |
| 9839 | Yes |
| 9845 | 0 |
| Modular Hose | No |
| Molded | Yes |
| Number of Quick Connect Fittings | 0 |
This part fits 10 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 1995 | Porsche | 968 | 3.0L | L4 | GAS | Lower | Molded Coolant Hose |
| 1994 | Porsche | 968 | 3.0L | L4 | GAS | Lower | Molded Coolant Hose |
| 1993 | Porsche | 968 | 3.0L | L4 | GAS | Lower | Molded Coolant Hose |
| 1992 | Porsche | 968 | 3.0L | L4 | GAS | Lower | Molded Coolant Hose |
| 1989 | Porsche | 944 | 2.5L | L4 | GAS | Lower | Molded Coolant Hose |
| 1989 | Porsche | 944 | 2.7L | L4 | GAS | Lower | Molded Coolant Hose |
| 1989 | Porsche | 944 | 3.0L | L4 | GAS | Lower | Molded Coolant Hose |
| 1988 | Porsche | 944 | 2.5L | L4 | GAS | Lower | Molded Coolant Hose |
| 1987 | Porsche | 944 | 2.5L | L4 | GAS | Lower | Molded Coolant Hose |
| 1986 | Porsche | 944 | 2.5L | L4 | 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.