Sierra 18-3517 Water Pump Kit Mercury MerCruiser 46-96148A5
18-3517
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Sierra 18-3517 Upper Water Pump Kit
Mercury / Mariner / MerCruiser service applications
The Sierra 18-3517 is an upper water pump service kit for selected Mercury and Mariner outboards and MerCruiser drives. It includes the impeller, pump housing and water-tube guide used for compatible pump assemblies.
Key Features
- ✔ Genuine Sierra-branded aftermarket upper service kit
- ✔ Includes Sierra 18-3017 impeller
- ✔ Includes pump housing and water-tube guide
- ✔ For selected Mercury outboards and MerCruiser drives
- ✔ Cross-references multiple Mercury service-kit numbers
Technical Specs
| Brand | Sierra |
| Kit number | 18-3517 |
| Kit type | Upper water pump service kit |
| Impeller | 18-3017 / Mercury 47-89984 |
| Water-tube guide | 18-3109 / 23-29804 |
| Pump base | Not included |
Compatibility / Fitment Guide
Applications include selected MerCruiser No.1 units with plastic flush screw-in gear housings, selected Alpha One drives through serial 0D594568, and listed Mercury four-cylinder 75, 80 and 85HP outboards. Always verify the serial range and pump-kit reference.
Part Number Cross Reference
| Sierra | 18-3517 |
| Mercury / Quicksilver | 46-96148A5; 46-60367A1; 46-96148A8; 46-96148Q8; 32437A1; 32437A3; 37433A |
| Impeller | 47-89984 / Sierra 18-3017 |
| Water-tube guide | 23-29804 / Sierra 18-3109 |
This is a genuine Sierra aftermarket kit. It is not supplied in Mercury or MerCruiser packaging.
Questions & Answers
Is the pump base included?
No. This is the upper service kit without the base.
Is the impeller included?
Yes. Sierra 18-3017 is listed as part of the kit.
Will it fit every Alpha One drive?
No. Check the drive serial number and existing pump configuration.
Is it genuine Mercury?
No. It is a genuine Sierra replacement kit.
Note: Use the correct workshop procedure and inspect the lower pump components before deciding whether an upper kit is sufficient.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
