Keep your engine running cool and leak-free with our “Radiator Coolant Overflow Hose (Part No. 1829702)” — engineered for the Ford Focus III and Ford C-Max 1.0 EcoBoost engines. This direct-fit replacement hose connects the radiator to the overflow/reservoir tank to safely channel excess coolant as your engine heats up and the coolant expands — preventing pressure buildup, spills or coolant loss. Made from durable, heat-resistant rubber compound that withstands engine-bay temperatures and coolant chemicals, this hose helps maintain proper coolant circulation and protects against leaks, overheating or air ingress. Ideal for replacing brittle, cracked or deteriorated original hoses, it restores the integrity of the cooling system and ensures reliable engine performance.

OEM Number: 8B081B, PV-WAP010, MI-WAP010, AM-WAP010, 1829702, 2255626, 1766346, 1771001, 1787097, 1793472, 1802055
 
Quantity : 1

Fitting Position : Upper Right

Cooling Hose : From Radiator to Expansion Tank

Make	Model	Variant	Type	Engine	Chassis	Year
Ford	C-Max	Petrol MPV	1.0 EcoBoost	998cc 74KW 100HP M2DA;M2DC	FWD II DXA/CB7,DXA/CEU	2012-2019
Ford	C-Max	Petrol MPV	1.0 EcoBoost	998cc 92KW 125HP M1DA;M1DD	FWD II DXA/CB7,DXA/CEU	2012-2019
Ford	C-Max	Petrol MPV	1.0 EcoBoost	999cc 74KW 100HP B3DA	FWD II DXA/CB7,DXA/CEU	2018-2019
Ford	C-Max	Petrol MPV	1.0 EcoBoost	999cc 92KW 125HP B7DA	FWD II DXA/CB7,DXA/CEU	2018-2019
Ford	Focus	Petrol Estate	1.0 EcoBoost	998cc 74KW 100HP M2DA;M2DB;M2DC;SFDA;SFDB	FWD III --	2012-2020
Ford	Focus	Petrol Estate	1.0 EcoBoost	998cc 92KW 125HP M1DA;M1DC;M1DD	FWD III --	2012-2020
Ford	Focus	Petrol Hatch	1.0 EcoBoost	998cc 103KW 140HP M1DH	FWD III --	2017-2020
Ford	Focus	Petrol Hatch	1.0 EcoBoost	998cc 74KW 100HP M2DA;M2DB;M2DC;SFDA;SFDB	FWD III --	2012-2017
Ford	Focus	Petrol Hatch	1.0 EcoBoost	998cc 92KW 125HP M1DA;M1DC;M1DD	FWD III --	2012-2017
Ford	Focus	Petrol Saloon	1.0 EcoBoost	998cc 74KW 100HP M2DA;M2DB;M2DC;SFDA;SFDB	FWD III --	2012-2020
Ford	Focus	Petrol Saloon	1.0 EcoBoost	998cc 92KW 125HP M1DA;M1DC;M1DD	FWD III --	2012-2020
Ford	Grand C-Max	Petrol MPV	1.0 EcoBoost	998cc 74KW 100HP M2DA;M2DC	FWD -- DXA/CB7,DXA/CEU	2012-2019
Ford	Grand C-Max	Petrol MPV	1.0 EcoBoost	998cc 92KW 125HP M1DA;M1DD	FWD -- DXA/CB7,DXA/CEU	2012-2019
Ford	Grand C-Max	Petrol MPV	1.0 EcoBoost	999cc 74KW 100HP B3DA	FWD -- DXA/CB7,DXA/CEU	2018-2019
Ford	Grand C-Max	Petrol MPV	1.0 EcoBoost	999cc 92KW 125HP B7DA	FWD -- DXA/CB7,DXA/CEU	2018-2019
Make	Model	Variant	Type	Engine	Chassis	Year

Our SKU: TFO1829702_94

All our Radiator Coolant Overflow Hose For Ford Focus Iii C-max 1.0 Ecoboost 1829702 are OEM quality and reliable after market car parts. This Radiator Coolant Overflow Hose For Ford Focus Iii C-max 1.0 Ecoboost 1829702 is specifically compatible with Ford: C-Max, Focus, Grand C-Max, .

Please use our make-model-year tool to check this part's compatibility with your vehicle. However, please note that our tool is for reference only and we recommend that you check the part number on your old unit prior to purchasing.

If you are still not sure about the compatibility of this part to your vehicle, please supply us with the VIN number or Reg number in our live chat or contact form! You can also find details on our purchasing & shipping guide here.

❓ Frequently Asked Questions (FAQ)

Q: What does a coolant overflow hose do?
A: The overflow hose links the radiator (or coolant cap neck) with the coolant reservoir/overflow tank. When engine coolant heats up and expands, excess coolant flows through the hose into the reservoir — and as the engine cools, the system draws coolant back, maintaining correct coolant volume and pressure balance.

Q: Why is it important to replace an old or damaged overflow hose?
A: Over time hoses can become brittle, crack or lose sealing integrity — causing coolant leaks or loss. A faulty hose can disrupt coolant circulation, lead to coolant loss, overheating, or allow air into the cooling system — which can cause hot-spots or engine damage.

Q: Which vehicles does this particular hose fit?
A: This hose is specified for Ford Focus III / Ford C-Max with the 1.0 EcoBoost engine (as per the product listing). Always double-check your car’s engine code and build-date against the part number before ordering to ensure correct fitment.

Q: What are common signs that the overflow hose needs replacing?
A: Signs include coolant leaks (visible puddles under the car or around the engine-bay), frequent need to top up coolant, overheating, coolant reservoir losing fluid, or coolant seepage near the radiator or reservoir hose-connections.

Q: Can I replace this hose myself, or should I visit a workshop?
A: If you have basic mechanical skills and simple tools, replacing an overflow hose is generally straightforward. Ensure the engine is cold before starting, catch any escaping coolant in a drain pan, and secure all hose-clamps properly. It’s good practice to refill and bleed the cooling system afterward to avoid air pockets.

Q: Will installing a new overflow hose prevent future coolant leaks and overheating?
A: Yes — with a proper, intact overflow hose and a correctly sealed cooling system, coolant containment and pressure regulation are restored. This helps prevent leaks, coolant loss, overheating issues, and maintains engine cooling system efficiency and safety.