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Vaico V20-1281 Engine Coolant Hose
| Brand | Vaico V20-1281 |
|---|---|
| Cooling Hose | from water pump to engine |
| Forward- /Backflow | for backflow |
| Height [mm] | 48 |
| Length [mm] | 295 |
| Packaging height [cm] | 4,8 |
| Packaging width [cm] | 14 |
| Transmission Type | Automatic Transmission |
| Weight [kg] | 0.122 |
| Width [mm] | 140 |
| Product line | VAICO |
| Fits | BMW · 6 vehicles |
Engine coolant hose. Routes coolant between components for reliable circulation.
Backflow design. Supports reverse coolant flow in the cooling system.
VAICO line. A trusted brand in automotive cooling and hose components.
Cross-references Rein CHE0516, 7 519 251 and 17 12 7 519 251 for the same application. See all 3.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Engine Coolant Hose for BMW Cooling Service
Vaico V20-1281 is an engine coolant hose for the cooling circuit, built for the water pump to engine routing and specified for backflow use. It is listed for automatic transmission applications on select BMW 545i and BMW 645Ci models, making it a focused replacement for the correct cooling and return path.
Key Features
- Cooling hose from water pump to engine
- Configured for backflow service
- Automatic transmission application
- Length: 295 mm
- Width: 140 mm
- Height: 48 mm
- Vaico part number V20-1281
Fitment and Application
Compatible with 2004-2005 BMW 545i, N/A, for ATF cooling and cooler-to-pump or return-trans cooler routing. Compatible with 2004-2005 BMW 645Ci, N/A, for return-trans cooler routing. This part cross-references Rein CHE0516 for the same application.
VAICO product line components are selected for vehicle-specific service work where the original hose routing, dimensions, and connection path matter. V20-1281 is listed under Belts and Cooling > Hoses and Pipes and is identified as an engine coolant hose for BMW cooling system service.
What This Hose Helps Address
- Coolant or transmission-fluid routing issues at the water pump connection
- Return-flow hose replacement on BMW automatic transmission cooling circuits
- Leaks caused by aged, cracked, or heat-cycled hose material
- Incorrect hose length or shape after prior repair work
- Service needs on BMW 545i and BMW 645Ci cooling-related lines
Installation Notes and Tips
Verify the hose routing against the vehicle’s existing cooling line before installation. Confirm the connection points, length, and orientation match the original layout for the BMW 545i or BMW 645Ci application. Inspect adjoining clamps, fittings, and mating surfaces for wear or contamination before reassembly.
Quality Assurance
Vaico V20-1281 is a vehicle-specific replacement part built to match the listed application details and dimensional requirements. Confirm fitment by year, make, model, and cooling-line routing before installation.
| Year | Make | Model | Submodel | Transmission | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2005 | BMW | 545i | Base | Manual | 4.4L | V8 | N/A | Grade: Aftermarket; ATF Cooling; Cooler To Pump; VAICO |
| 2005 | BMW | 545i | Base | Automatic | 4.4L | V8 | N/A | Grade: Aftermarket; Return-Trans Cooler; VAICO |
| 2005 | BMW | 645Ci | Base | — | 4.4L | V8 | N/A | Grade: Aftermarket; Return-Trans Cooler; VAICO |
| 2004 | BMW | 545i | Base | Manual | 4.4L | V8 | N/A | Grade: Aftermarket; ATF Cooling; Cooler To Pump; VAICO |
| 2004 | BMW | 545i | Base | Automatic | 4.4L | V8 | N/A | Grade: Aftermarket; Return-Trans Cooler; VAICO |
| 2004 | BMW | 645Ci | Base | — | 4.4L | V8 | N/A | Grade: Aftermarket; Return-Trans Cooler; VAICO |
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