VW Fox 05-11 Coolant Header Tank Expansion Water Hose Pipe 1J0121087B
VW Fox 05-11 Coolant Header Tank Expansion Water Hose Pipe 1J0121087B
Volkswagen Fox (2005-2011) Coolant Header Tank Expansion Hose Pipe (1J0121087B)
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Vehicle Reference & Fitment Location
This part is removed from and specifically designed to fit the Volkswagen Fox (2005-2011) Hatchback models. Below is a reference image of the exact vehicle type this part belongs to, along with the manufacturer logo to guarantee authenticity.
Where is this part fitted & What does it do?
This coolant expansion/header tank water hose pipe is located within the engine bay, connecting the coolant expansion header tank to the main cooling system or thermostat housing circuit. It regulates coolant overflow, pressure relief, and fluid return between the engine and the coolant reservoir.
Part Details & Symptoms of Failure
Material: High-temperature reinforced EPDM automotive rubber tubing combined with factory quick-connect fittings or secure clamp ends.
Common Symptoms of a Faulty / Damaged Unit:
- Coolant puddles under the vehicle or frequent low coolant level warnings.
- Visible splitting, bulging, weeping, or pinhole leaks along the rubber pipe body.
- Engine overheating due to loss of system pressure through a degraded cooling hose.
- Brittle or cracked plastic quick-connect connectors snapping during maintenance.
Why buy a factory original part? Aftermarket universal hoses often kink or collapse under high vacuum/heat cycles in tight engine bays. Original factory VW hoses maintain exact pre-moulded geometry and secure clip seating. Buying quality recycled parts saves you up to 70% off main dealer prices!
Vehicle Fitment & Compatibility Chart
Please use this chart to confirm fitment. Always verify part number 1J0121087B matches your original unit before ordering. Note: Also fits shared VAG platform models utilizing this exact coolant hose architecture.
| Vehicle Model & Engine Spec | Years | Fitment Status |
|---|---|---|
| Volkswagen Fox (5Z1, 5Z3) Hatchback | 2005 - 2011 | CONFIRMED FIT |
| VW Polo / Golf / Skoda (Shared VAG Platforms) | Various | LIKELY FIT (Verify Part No.) |
| Volkswagen Golf Mk6 / Later Models | 2008+ | WILL NOT FIT |
Fitting Instructions & Garage Repair Estimator
Estimated Repair Time: 20 - 30 Minutes
Required Tools: Coolant catch pan, hose clamp pliers, flathead screwdriver, fresh coolant.
Brief Instructions: Ensure the engine is completely cold before starting work. Place a catch pan beneath the vehicle. Release the spring clamps or quick-connect clips on both ends of the old hose pipe. Carefully pull the hose free from the header tank and engine connector unions. Fit the replacement hose (1J0121087B), secure the clamps tightly, top up the coolant expansion tank to the correct level, and bleed the system of any trapped air.
Garage Labour Cost Calculator
If you prefer a professional to fit this, use our static calculation table below to estimate your labour bill (based on a 0.5-hour estimated time):
| Garage Hourly Rate (£) | Estimated Time | Total Estimated Labour Cost |
|---|---|---|
| £50.00 / hr (Local Independent) | 0.5 Hour | £25.00 |
| £75.00 / hr (Specialist) | 0.5 Hour | £37.50 |
| £120.00 / hr (Main Dealer) | 0.5 Hour | £60.00 |
*We also offer a professional fitting service subject to availability. Please contact us to book!
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- Global VAT Scheme: We operate under the global VAT margin scheme. No VAT is charged on top of this purchase!
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Returns Policy
We provide exhaustive fitment data, compatibility charts, and high-resolution images. Because of this, any parts returned under the "Doesn't Fit" or "Item Not As Described" categories due to buyer error will have a 50% restocking fee deducted. If you are unsure about fitment, please message us before buying—we are happy to verify it for you using our exact images and part numbers!
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