Water Pump Impeller Kit 46-77516A3 46-77822A1 for Mercury Mariner 30 35 40 50 60 70 HP Outboard Sierra 18-3322 — Australia Local Warehouse
Water Pump Impeller Kit 46-77516A3 46-77822A1 for Mercury Mariner 30 35 40 50 60 70 HP Outboard Sierra 18-3322 — Australia Local Warehouse
Product Overview
Complete water pump kit for Mercury outboards from 30 HP to 70 HP, supplied with the upper housing 46-77822A1, the impeller 47-89983, the face plate 54705, the stainless bowl, the gasket and seal set and the drive key, 224 g with packaging. It replaces 46-77516A3 and 46-77177A3, and crosses to Sierra 18-3322, 18-3323 and 18-3324. Held in our Australia local warehouse.
On the 30 to 70 HP three and four cylinder motors the housing and the face plate are both wear items. Sand drawn up a shallow ramp grinds the stainless bowl and scores the housing, and a new impeller dropped into a scored housing runs hot from the first trip.
Mercury changed the pump body more than once inside these horsepower ratings, so the cowl decal proves nothing. The serial number on the clamp bracket is what decides it, and the range table below is the reference.
Specifications
| Specification | Detail |
|---|---|
| Condition | New / New with tags |
| Type | Water pump impeller kit, complete |
| Horsepower Range | 30 HP to 70 HP |
| Engine Type | Two, three and four cylinder outboard |
| Kit Contents | Housing, impeller, face plate, bowl, gaskets, seals, O-rings, key |
| Shipping Weight | 224 g with packaging |
| Quantity | 1 complete kit |
OEM Cross Reference
| Brand | OEM Part Numbers |
|---|---|
| Mercury | 46-77516A3, 46-77177A3, 46-73640A2 |
| Mercury | 46-60366A1, 46-89983 |
| Sierra | 18-3322, 18-3323, 18-3324 |
| Impeller cross numbers | 17461-95201, 47-65959, 47-89983T |
Compatible Engines
| Horsepower | Engine | Serial Notes |
|---|---|---|
| 30 HP | Standard | Serial 1271884, 1448139 |
| 30 HP Jet | Jet drive | Serial C159200 to G589999 |
| 35 HP | Standard | Serial 1571114 to 2453068 and 6445653 and up |
| 40 HP | Standard | Serial 2874704, 4362214 |
| 40 HP | Two cylinder | Through 1983, serial 4860103 and up |
| 40 HP | Four cylinder | Serial C159200 and up |
| 45 HP | Standard | Serial 5531630 and up |
| 50 HP | Standard | Serial 1521914, 2305100 |
| 50 HP | Four cylinder | Serial 4357640, 5531629, 4962056 and up |
| 50 HP | Three cylinder | Serial 6428681 to D000749 |
| 60 HP | Three cylinder | Serial 6428681 to D000749 |
| 65 HP | Three cylinder | Serial 3293184 to 4571651 |
| 70 HP | Three cylinder | Serial 4571652 to 6428680 |
| Mariner | 30 HP to 70 HP | Same pump as the Mercury models listed |
Serial Number Ranges
| Model | Serial Range |
|---|---|
| 65 HP three cylinder | 3293184-4382056 and 4382057-4571651 |
| 70 HP three cylinder | 4571652-4977156 and 4977157-6428680 |
Assembly Components
| Component | Part Number | Qty |
|---|---|---|
| Upper pump housing | 46-77822A1 | 1 |
| Water pump impeller | 47-89983 | 1 |
| Face plate | 54705 | 1 |
| Stainless pump bowl | 48753 | 1 |
| Housing gasket set | Not published | 5 |
| Rubber seal and washer | Not published | 2 |
| O-ring set | Not published | 3 |
| Water seal and shim | Not published | 2 |
| Impeller drive key | Not published | 1 |
What's Included
| Component | Qty |
|---|---|
| Upper pump housing | 1 |
| Water pump impeller | 1 |
| Face plate | 1 |
| Stainless pump bowl | 1 |
| Gaskets, seals, O-rings and washers | Set |
| Impeller drive key | 1 |
Housing and Plate Wear
| What You Find | What It Means | What to Do |
|---|---|---|
| Sand in the pump on a shallow ramp | Bowl and blade tips ground away | Fit the kit, it includes the bowl |
| Housing scored in an arc | Impeller has been running dry | New housing with the kit |
| Face plate grooved | Water bypasses the blades | New plate, straight edge it first |
| Blades set with a curve | Rubber taken a set over winter | Renew before the season |
| Telltale weak at idle | Often the outlet tube, not the pump | Clear the tube before ordering |
| Overheat only at planing speed | Pump volume short, cup worn | Kit, plus a check of the inlet screen |
Fitting Notes
| Step | Action |
|---|---|
| 1 | Read the serial on the clamp bracket, Mercury used more than one pump across 30 to 70 HP |
| 2 | Compare the old housing against 46-77822A1, the earlier casting is different |
| 3 | Drop the gearcase on a stand and note the shift shaft position before it comes apart |
| 4 | Check the driveshaft splines while it is off, a dry spline strips inside the crank |
| 5 | Fit the key and confirm the impeller turns with the shaft before the housing goes on |
| 6 | Lubricate with glycerine and turn the shaft by hand to set the blade direction |
| 7 | Check the telltale at idle and again at planing speed on the first run |
| 8 | Flush after every sandy or shallow launch, sand is what wears these pumps out |
Condition & Warranty
| Item | Detail |
|---|---|
| Condition | New / New with tags |
| Warranty | Standard |
| Packaging | Sealed retail packaging |
Shipping from Australia
| Destination | Warehouse | Note |
|---|---|---|
| Australia | Australia local warehouse | Domestic delivery, no import duty |
| New Zealand | Australia local warehouse | Short transit, customs may apply |
| Asia Pacific | Australia local warehouse | Tracked air and sea options |
Before You Buy
- Read the serial on the clamp bracket, Mercury used more than one pump across 30 to 70 HP
- Compare the old housing against 46-77822A1 before ordering
- Check the driveshaft splines while the gearcase is off
- Note the shift shaft position before the gearcase drops
- This is the pump kit, the gearcase, the driveshaft and the shift shaft are not included
- 30-Day Easy Returns
- Ships from our Australia local warehouse
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