Description
Overview
The Fynspray Impeller for RWB79A 3/4″ Pump (Part Number RWB0079B) is a direct-fit flexible impeller for Fynspray / RWB79A series pumps. It delivers dependable performance in marine cooling, bilge pumping, and deck washdown systems. Because it matches the original geometry, you can install it quickly and keep the pump operating efficiently.
Features
- Durable neoprene resists seawater and everyday wear.
- Eight-blade design maintains strong, even flow.
- Fits a 16 mm shaft with a 1/2 forward keyway for secure drive.
- Pairs with a bronze pump housing and a stainless steel shaft.
Specifications and Materials
| Overall Diameter | 65 mm |
| Axial Depth / Width | 51 mm |
| Shaft Hole Diameter | 16 mm (approx. 5/8″) |
| Number of Blades | 8 |
| Material | Neoprene |
| Drive / Mount Style | Forward 1/2 keyway |
Because neoprene is flexible and non-toxic, it suits cooling circuits and bilge water. Moreover, the compound stays pliable for longer, which reduces cracking and helps the pump self-prime reliably. Consequently, the fynspray impeller rwb79a maintains performance across routine service intervals.
Compatibility and Fitment
This replacement impeller RWB0079B fits the Fynspray / RWB79A 3/4″ pump. Since it mirrors the original dimensions, you can swap it in without modification. However, it does not interchange with impellers for the 1/2″ or 1″ variants, so confirm the part number before ordering. Therefore, selecting the exact fynspray impeller rwb79a avoids downtime and protects pump output.
Compliance and Safety
Fynspray manufactures the impeller from marine-grade neoprene. As a result, it resists saltwater and supports safe, consistent operation. Replace the impeller at regular service intervals, and orient the blades correctly during installation to protect flow and temperature control.
Marine Applications
- Engine cooling on ski boats and cruisers.
- Bilge pumping where reliability matters.
- Deck washdown with steady pressure.
- General water transfer aboard small craft.
By choosing the correct part, you maintain strong output and minimise unexpected repairs.
Why Choose Argomarine
Argomarine supplies genuine replacement parts such as RWB0079B. We verify fitment, ship promptly, and provide local advice so your maintenance stays simple and cost-effective.
For material properties relevant to neoprene impellers, see: https://www.assda.asn.au
Browse more gearbox parts here: https://www.argomarine.com.au/product-category/gear-box-parts/
