Sierra 18-3242J Water Pump Kit Johnson Evinrude 25-50HP 5031744
18-3242J
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Sierra Water Pump Repair Kit 18‑3242J
Suzuki‑Built Johnson / Evinrude Four‑Stroke Applications
Sierra water-pump impeller repair kit for selected Suzuki-built Johnson and Evinrude four-stroke outboards. It cross-references to BRP 5031744 and the corresponding Suzuki pump-kit family.
Key Features
- ✔ Sierra aftermarket water-pump repair kit
- ✔ Includes impeller, wear plate and gasket components as supplied
- ✔ For Suzuki-built Johnson/Evinrude four-strokes
- ✔ Restores cooling-water delivery during scheduled service
- ✔ Cross-reference to BRP 5031744
Technical Specs
| Brand | Sierra Marine |
| 4Boats SKU | 18-3242J |
| Part type | Water-pump impeller repair kit |
| Primary BRP reference | 5031744 |
| Engine type | Four-stroke |
Compatibility / Fitment Guide
| Brand / engine family | Verified years | Notes |
|---|---|---|
| Johnson / Evinrude 25 / 30 HP four-stroke | 2004–2005 | Selected Suzuki-built models; complete pump configuration varies. |
| Johnson / Evinrude 40 / 50 HP four-stroke | 1999–2005 | Use when the service catalogue specifies 5031744. |
| Suzuki DF-series equivalent | Model/serial dependent | Cross-reference through the Suzuki 17400-9635x / 17400-9640x pump-kit family. |
| Evinrude E-TEC 40 / 50 | Not this kit | E-TEC two-stroke pumps use different parts. |
The former 50 HP 'to 2010' blanket statement was not retained. Verify the full model code, serial range and OEM kit number; do not select from horsepower alone.
Part Number Cross Reference
| Sierra | 18-3242 / store SKU 18-3242J |
| BRP / Johnson / Evinrude | 5031744; 0778317; 778317 |
| Associated BRP references | 5031415; 5032166; 5034358 |
| Suzuki pump-kit family | 17400-96350; 17400-96351; 17400-96352; 17400-96353 |
Cross-reference numbers identify the intended application; brand and packaging may differ.
Frequently Asked Questions
Is this for E-TEC engines?
No. The verified applications are Suzuki-built Johnson/Evinrude four-strokes.
What is included?
The listing identifies an impeller repair kit with impeller, wear plate and gasket components; compare the product image before fitting.
Does it fit 50 HP through 2010?
That broad claim was removed; the verified Johnson/Evinrude table covers 1999–2005.
Is it genuine BRP?
No. It is a Sierra aftermarket repair kit.
Compare the engine model code, original part number and physical installation before ordering.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
