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Radiator Top / Bottom Hoses
By OE Match
- Porsche 928 4.5L 1978-82
- Porsche 928S 4.7L 1981-83
- Porsche 928S2 4.7L 1984-86
Replacement hose for the upper radiator hose used in Porsche 928 models. It connects the radiator to the temperature regulator (thermostat/expander) housing, which is part of the engine cooling system. It ensures proper coolant flow between the radiator and engine, supporting precise temperature control.
Fits:
Porsche 928 1978 - 1984
Diagram ref no 19
• Location: Upper radiator hose — radiator to thermostat / water-regulator housing
• Use Case: Replacement during maintenance, cooling system overhaul, or when hose shows leak, age or wear
Manufactured to the original dimensions, inside diameter, and hose shape, this replacement hose ensures a proper fit and reliable seal without the need for modification. Made of high-quality, heat-resistant rubber, it withstands engine temperatures, pressure cycles, and coolant exposure, ensuring reliable, long-lasting performance.
This hose is especially useful when the original hose becomes brittle, cracked, swollen, or leaking, which are common problems in older cooling systems. Installing a new hose helps prevent coolant leaks, overheating, and potential engine damage.
Hoses degrade over time due to heat, coolant chemicals, age, and repeated expansion / contraction. A failing radiator hose can lead to:
• Coolant leaks under bonnet or beneath car
• Engine overheating or overheating under heavy load
• Loss of coolant pressure or coolant circulation
• Risk of engine damage due to poor cooling
Replacing it with a correctly spec’d hose helps maintain coolant circulation, prevents leaks, and safeguards the engine’s cooling system reliability.
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623806
The product you are viewing cross references to these numbers
- Porsche 928S2 4.7L 1984-86
- Porsche 928S4 5.0L 1987-92
- Porsche 928GT 5.0L 1989-91
- Porsche 928GTS 5.4L 1992-95
Fits:
Porsche 928 1985-95
Click 'Zoom in' for large parts diagram.
Diagram ref no 19
Related reference numbers
Related, superseded, cross reference or alternative numbers for comparison.
92810623808
The product you are viewing cross references to these numbers
Radiator top and bottom hoses carry coolant between the engine and the radiator on Porsche models, helping to regulate operating temperature and support reliable running across everyday use and more demanding driving. OEMatch radiator top and bottom hoses are compatible replacements engineered to original-spec dimensions and tolerances — a practical option when genuine or OEM parts are unavailable.
Available Types- Moulded top hose and shaped bottom hose to match common Porsche coolant routing
- Reinforced rubber and fabric-wrapped constructions for higher temperature or pressure applications
- Complete hose assemblies including integrated fittings where applicable
OEM (Original Equipment Manufacturer) parts are made by the same company that produced your Porsche’s original radiator top and bottom hoses. OE (Original Equipment) refers to parts matching original specifications for the radiator top and bottom hoses and may be supplied by alternative manufacturers. Aftermarket parts offer alternative options, sometimes with enhanced features or better value. OEMatch supplies non-OEM radiator top and bottom hoses engineered as direct-fit alternatives to OEM parts, made to original-spec dimensions and tolerances for Porsche models. Radiator hoses route hot coolant to the radiator and return cooled fluid to the engine; they are formed to fit around intake and accessory components and use clamps or quick-fit fittings to secure connections. OEMatch focuses on radiator top and bottom hose items selected for Porsche applications.
Benefits Include- Restored coolant flow and improved temperature stability
- Reduced risk of leaks and loss of coolant
- Materials chosen for heat resistance and flexibility to cope with engine movement
- Thermal ageing and repeated heat cycles cause rubber to harden and crack
- Chemical degradation from coolant additives can produce soft spots or swelling
- Abrasion, clamp wear or routing contact can lead to local damage and leaks
A failing hose can allow coolant loss and lead to overheating with risk to the engine. Replacing worn hoses maintains cooling circuit pressure and flow, supports stable engine temperature on Porsche models and reduces the chance of roadside breakdown. Fit the correct hose profile and use appropriate clamps or fittings to avoid leaks and ensure a reliable connection.
Advantages- Made to original-spec dimensions where applicable to aid fitment and routing
- Fits original mounting points and clearances to minimise refit work
- Available in multiple constructions to match repair needs and operating conditions
These items affect safety-critical systems. Installation should be carried out by a qualified technician following model-specific procedures and torque settings. Use calibrated tools and new fasteners where specified.
