Impeller 500318 ref. (Mercury 47-42038Q02) – code: 1814303 – Motomarine

The impeller 500318 Motomarine, reference Mercury 47-42038Q02 and supplier product code 1814303, it is a spare part intended for the maintenance of outboard motors. In the nautical field, the impeller is a component subject to wear and is normally replaced during periodic interventions, especially when you want to keep the engine's cooling circuit efficient.

This product sheet neatly collects the available information to correctly identify the spare part and compare it with the indicated Mercury reference. For a safe choice, it is always advisable to check the code and correspondence with your engine before purchasing.

Spare part features and details

The impeller is identified by the following references and dimensional data, useful for comparison with the installed component or with the engine's spare parts list.

Product references

• Model / reference: Impeller 500318
• Mercury Ref.: 47-42038Q02
• Supplier product code: 1814303
• Supplier: Motomarine S.R.L.

Engine compatibility (as per available data)

The compatibility listed below is that present in the provided information. In case of doubt, always compare the original code and measurements.

• Engine type: HP 2T (6/8/9.9/10/XR10/15)
• Engine type: 4T (8/9.9/13.5/15)

Dimensional data

• ID: mm 13
• D: mm 58.8
• H: mm 11.7
• Bushing: G

Typical applications in the nautical field

This impeller is used as a replacement for Mercury outboard motors in applications where reference 47-42038Q02 (or equivalents indicated by the technical documentation) is specified. It is a component commonly involved in routine and extraordinary maintenance activities, for example when:

• a scheduled intervention is performed on the water pump assembly;
• a check of the cooling circuit is carried out;
• wear parts are replaced in preparation for the boating season;
• a system is restored after a period of inactivity or storage.

Advantages for maintenance and spare parts management

Using a correctly identified impeller consistent with the manufacturer's references offers practical advantages in maintenance management:

• Faster identification: the presence of Mercury ref. 47-42038Q02 and code 1814303 facilitates comparison with manuals and spare parts lists.
• Dimensional check: ID, D and H allow a direct match with the removed component, especially useful when the engine has undergone previous interventions.
• Maintenance-oriented spare part: designed for interventions on outboard motors, in contexts where the reliability of the cooling circuit is a central aspect of engine care.
• Simpler warehouse management: clear codes and references help workshops and boaters reorder the correct component without ambiguity.

Usage and important notes

Replacing the impeller is part of typical maintenance operations. For a correct result and to avoid assembly errors, it is recommended to follow the engine manufacturer's instructions and the procedures provided for your model.

Recommended checks before purchase

• Original code check: verify that the requested reference is 47-42038Q02 (or the one indicated by the engine's technical documentation).
• Measurement comparison: if possible, compare ID mm 13, D mm 58.8 and H mm 11.7 with the impeller installed.
• Check engine type: make sure your configuration is among those indicated (HP 2T and 4T as per available list).

Operational notes

• Related maintenance: during replacement it is standard practice to also inspect the pump group components (seat, any seals, and wear-prone parts) according to the manufacturer's instructions.
• Installation: if you do not have the necessary experience, it is advisable to entrust the intervention to a qualified technician.
• Spare part identification: in case of doubt, use the codes (500318 / 1814303 / 47-42038Q02) as a reference to request support in selection.

FAQ – Frequently Asked Questions

Is this impeller compatible with Mercury 47-42038Q02?

Yes, the product is indicated as impeller 500318 with reference Mercury 47-42038Q02. Before purchasing, it is recommended to verify the code required by your engine.

What is the Motomarine product code for this impeller?

The supplier product code shown on the sheet is 1814303 (Motomarine S.R.L.).

What are the available measurements for comparison?

The sheet shows: ID mm 13, D mm 58.8 and H mm 11.7. The G bushing is also indicated.

For which types of engines is compatibility indicated?

The compatibility available on the sheet shows HP 2T (6/8/9.9/10/XR10/15) and 4T (8/9.9/13.5/15). Always verify the match with your specific model.

How can I be sure to order the correct replacement part?

Compare the Mercury 47-42038Q02 reference and, if possible, also verify the measurements (ID, D, H) with the installed impeller or with the engine's technical documentation.