Peugeot 403
Coolant capacity & service interval
Peugeot 403 coolant specifications indicate a capacity of 9 liters for normal use. The data covers 2 configurations of the model.
The configuration chart below lists fill volumes and service intervals for each engine and trim variant.
| Type | Specifications |
|---|---|
| 403 Diesel (1958-1966) |
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| 403 (1955-1966) |
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Additional Notes
- The Peugeot 403 cooling system holds 9 liters of coolant, a figure that reflects the total system volume including the radiator, engine block passages, and heater circuit combined.
- Both the petrol and diesel variants of the 403 share an identical 9-liter cooling system capacity, meaning no adjustment to fill volume is needed when servicing either engine type.
- The 403 Diesel, introduced in 1958, carries the same 9-liter cooling system capacity as the petrol model that preceded it from 1955, despite the inherently different thermal characteristics of a diesel engine.
- The capacity listed for both rows is a normal use specification, meaning the 9-liter figure applies under standard operating conditions rather than a first-fill or overhaul scenario.