Whale AK0553 Gusher Galley Mk3 GP0550 GP0551 Pump Service Kit
AK0553
- Dispatched in 2-3 days
- 30 Day Return Policy
- In stock, ready to ship
- Backordered, shipping soon
Whale Gusher Galley Mk3 Service Kit
For right- and left-hand Mk3 foot pumps
The genuine Whale AK0553 overhaul kit contains the normal serviceable diaphragms, valves, seals and retaining hardware for Gusher Galley Mk3 foot-operated water pumps. It supports both the right-hand GP0550 and left-hand GP0551 versions.
Key Features
- Complete normal-service kit for Gusher Galley Mk3
- Fits both GP0550 right-hand and GP0551 left-hand pumps
- Includes two diaphragms, valves, O-rings and fixing hardware
- Genuine Whale manufacturer reference AK0553
- For freshwater or saltwater systems within the pump's specification
Technical Specs
| Manufacturer | Whale |
| Service-kit code | AK0553 |
| Pump family | Gusher Galley Mk3 |
| Compatible models | GP0550 (RH); GP0551 (LH) |
| Small O-rings | 2 |
| Valves / valve stems | 4 / 4 |
| Large O-rings | 4 |
| Diaphragms | 2 |
| Hardware | 4 self-tapping screws; 1 sealing washer |
| 4Boats SKU | AK0553 |
Compatibility / Fitment Guide
| Check | Compatible when | Do not use when |
|---|---|---|
| Pump generation | The pump is marked Gusher Galley Mk3. | Mk1, Mk2 or another Whale foot-pump family. |
| Model code | GP0550 right-hand or GP0551 left-hand. | The model plate shows a different GP number. |
| Service required | Worn diaphragms, valves or seals are being replaced. | The piston, operating mechanism or pump body is cracked; separate parts or a complete pump may be required. |
| Handing | Both RH and LH Mk3 variants use AK0553. | Handing must still be checked when ordering complete pump assemblies. |
Part Number Cross Reference
| Whale MPN | AK0553 |
| Right-hand pump | GP0550 |
| Left-hand pump | GP0551 |
| Piston / operating kit | AS0556 — separate item |
| 4Boats SKU | AK0553 |
Use the manufacturer part number and pump/toilet configuration as the primary fitment checks. Similar-looking service kits are not necessarily interchangeable.
Frequently Asked Questions
Does AK0553 fit both left- and right-hand pumps?
Yes, provided they are Gusher Galley Mk3 models GP0550 or GP0551.
Is the piston assembly included?
No. AK0553 services diaphragms, valves and seals; the piston/operating repair kit is a separate reference.
Can I use it on a Gusher Galley Mk2?
No. Whale identifies AK0553 for Mk3 only.
Should I verify the model first?
Yes. Read the GP number and Mk generation from the pump or parts diagram before dismantling.
Before ordering: compare the part number, product label and pump orientation/model with your existing equipment.
For the products under £150 the shipping is £6.99.
Free delivery for most items over £150.
