Parts for your 2008 Ford Transit-Radiator hose

2008 Ford Transit Radiator Hose – What it does and how to look after it

Technical references including the Ford Workshop Manual for Transit 2006–2013 (Section 303-03 Engine Cooling), the Haynes Ford Transit Diesel 2006–2013 manual, and Australian catalogues from Gates and Dayco all list upper and lower radiator hoses for the 2008 Transit (Mk7 V347/V348). That means a radiator hose is absolutely fitted and relevant on this model.

The radiator hose pair is the cooling system’s main artery set. The upper hose carries hot coolant from the engine to the radiator, and the lower hose returns cooled fluid back to the water pump and thermostat housing. On a working van that spends its days on job sites, open roads and city crawls, those hoses manage engine temperature so the Duratorq keeps its cool, fuel economy stays on song, and the head gasket remains happy.

Transit owners should treat hoses as consumables. Heat cycles, oil mist, and ozone slowly harden rubber, and long downhill tows or a scorching arvo under the bonnet can tip a marginal hose over the edge. A popped or collapsed hose can cause rapid overheating, limp mode, or worse.

• Common warning signs: soft spots or spongy feel, swelling near clamps, surface cracks or crazing, chalky coolant crust at joints, oil contamination, bulges, or a lower hose that flattens under revs (suction collapse).
• Inspection rhythm: a quick squeeze-and-look every service, with a proper cooling-system check before summer, big trips, or heavy towing.

For typical Aussie and Kiwi conditions, replacement around 6–8 years or 100–150,000 kilometres is sensible, earlier if any ageing signs appear. When the time comes, it’s smart practice to replace both upper and lower hoses together, fit quality EPDM hoses from a known brand, and use new constant-tension clamps. Always work stone-cold, depressurise the system, and capture old coolant for proper disposal.

• Use coolant that meets the Ford specification listed in the owner’s manual (check the cap and handbook), mix it correctly, and bleed air per the workshop procedure.
• After fitting, align clamps away from rub points, check radiator and thermostat-neck stubs for corrosion, top up, run to temperature with the heater on, and pressure-test to the cap rating.
• Remote travel? Keeping a spare hose and clamps in the van can turn a roadside headache into a quick fix.

How often should radiator hoses be changed on a 2008 Ford Transit?

Most workshop schedules and hose makers suggest 6–8 years or 100–150,000 kilometres in local conditions. High heat, stop–start work, towing, or oil exposure can shorten that. Regular inspections are the real key—if there’s swelling, cracking, softness, or leaks, replace sooner.

What coolant should be used after changing hoses?

Use coolant that meets the Ford specification noted in the Transit’s handbook and on the expansion tank cap. Sticking to the correct Ford-spec OAT/HOAT type prevents chemical reactions that can attack hoses and alloy components. Never mix types, if unsure, fully flush before refilling.

Can just the top hose be replaced, or should both be done together?

While the upper hose is often the first to show age, best practice is to replace both upper and lower hoses as a pair. They live the same life, and doing them together saves duplicate coolant and labour, reduces the chance of a follow-up failure, and keeps the cooling system balanced.