Radiator hoses carry coolant between the engine, radiator, and heater matrix, acting as the flexible links that accommodate engine movement and thermal expansion within the cooling circuit. Without them, the pressurised coolant loop cannot complete its journey, and the engine temperature rises rapidly towards overheating. The most common failure mode is internal collapse under reduced pressure — an aged hose that looks intact from the outside softens internally and can be sucked closed by the cooling system when the engine is switched off, blocking coolant flow on the next cold start. External cracking and swelling at the clamp positions are the other tell-tale signs, often appearing after five to eight years or 80,000 miles of service. Because the hose profile, length, and end-bore diameter are unique to each cooling system layout, the OE number is the only reliable way to guarantee the correct fitment without modification. Gates and Metalcaucho manufacture radiator hoses to OE tolerances for a wide range of European vehicles; CAUTEX and RAPRO also cover extensive vehicle ranges. A leaking or collapsed hose can destroy an engine within minutes through overheating, so any suspected deterioration warrants immediate inspection rather than a wait-and-see approach.
Radiator hoses are chassis-specific in terms of profile, diameter, and overall length. Use the vehicle selector on this page to narrow listings to your make, model, year, and engine code. Once you have a list of OE references, compare against any part number embossed or printed on your existing hose — most manufacturers mould this into the rubber during production. Your VIN can also be used at a main dealer parts counter to confirm the exact OE reference for your cooling system layout.
OEM hoses are manufactured to the vehicle maker's original drawings — the same rubber compound, wall thickness, and reinforcement layer. Quality aftermarket hoses from brands such as Gates or Metalcaucho use equivalent reinforced EPDM rubber and match the OE dimensions precisely. Generic alternatives may use lighter reinforcement or inferior rubber formulations that harden sooner in the engine bay's heat environment, increasing the risk of cracking or internal delamination before the expected service life is reached.
Not strictly required, but it is good practice. Upper and lower hoses typically age at similar rates since they share the same thermal cycling. If one hose shows swelling, softness, or surface cracking, the other is likely not far behind. Replacing both during the same job saves the labour of a second cooling-system drain-and-refill within a short period. At minimum, inspect the second hose carefully whenever replacing one — squeeze it firmly; a hose that feels spongy or collapses under light pressure should be replaced.
External signs include surface cracking, swelling near the clamp ends, and coolant weeping or staining on the hose surface. A hose that feels unusually soft or spongy when cold — or one that you can collapse with finger pressure — is likely suffering internal delamination. In service, a failed hose causes the temperature gauge to climb rapidly, steam from the engine bay, and a sweet smell of coolant. Any of these symptoms requires an immediate stop: continuing to drive risks serious engine damage through overheating within a very short distance.
Showing 100 of 12,535 Radiator Hose OE numbers. Enter the OE on the main OE search to jump to any reference.
