Water Pump Impeller Kit with Housing – Fits Yamaha 4-Stroke 50-115 HP Outboards (Replaces 68V-W0078-01-00)
Water Pump Impeller Kit with Housing – Fits Yamaha 4-Stroke 50-115 HP Outboards (Replaces 68V-W0078-01-00) is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit with Housing – Fits Yamaha 4-Stroke 50-115 ...
Water Pump Impeller Kit with Housing – Fits Yamaha 4-Stroke 50-115 HP Outboards (Replaces 68V-W0078-01-00) is backordered and will ship as soon as it is back in stock.
Product Details
This complete Water Pump Impeller Kit with Housing is a direct-fit replacement for Yamaha 4-stroke outboard motors from 50 to 115 HP, including models F75, F90, F115, LF115, VF115, and VF90 from 2004 and newer (excluding 115B models).
It serves as a direct interchange for Yamaha part numbers 68V-W0078-01-00 and 68V-W0078-00-00, as well as aftermarket equivalents including Sierra 18-3523-1 and Mallory 9-48611.
- Direct replacement installation requires no modifications.
- Features a durable neoprene impeller and robust nylon housing for reliable performance in marine environments.
- Kit contains all necessary gaskets, o-rings, and hardware for a complete overhaul.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Notes |
|---|---|---|
| Yamaha | 68V-W0078-01-00 | Supersedes 68V-W0078-00-00 |
| Yamaha | 68V-W0078-00-00 | |
| Sierra | 18-3523-1 | Complete kit with housing |
| Sierra | 18-3442 | Interchange kit (no housing) |
| Mallory | 9-48611 | |
| UanofCn | 68VW0078 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
Designed for select Yamaha 4-stroke outboard engines.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F75 | 75 | 4-Stroke | 2006–Up | 68V-W0078-01-00, 68V-W0078-00-00 | |
| Yamaha | F90 | 90 | 4-Stroke | 2006–Up | 68V-W0078-01-00, 68V-W0078-00-00 | |
| Yamaha | VF90 | 90 | 4-Stroke | 2006–Up | 68V-W0078-01-00, 68V-W0078-00-00 | |
| Yamaha | F115 | 115 | 4-Stroke | 2004–Up | 68V-W0078-01-00, 68V-W0078-00-00 | Except 115B models |
| Yamaha | LF115 | 115 | 4-Stroke | 2004–Up | 68V-W0078-01-00, 68V-W0078-00-00 | |
| Yamaha | VF115 | 115 | 4-Stroke | 2004–Up | 68V-W0078-01-00, 68V-W0078-00-00 | |
| Yamaha | F50 | 50 | 4-Stroke | 2004–Up | 68V-W0078-01-00, 68V-W0078-00-00 | Some listings include F50 compatibility |
Technical Specs
- Product Type
- Water Pump Impeller Kit with Housing
- Installation
- Direct replacement
- Housing Material
- Nylon PA66 Plastic, SS316 Stainless Steel (Insert Cup and Plate)
- Impeller Material
- Neoprene
- O-Ring Material
- Neoprene
- Package Dimensions
- 165 × 124 × 96 mm (6.5 × 4.88 × 3.78 inches)
- Weight
- 0.64 kg (1.42 lb)
What’s in the Box
- 1 x Water Pump Housing (61A-44311-01-00)
- 1 x Water Pump Base Outer Plate (68V-44323-00-00)
- 1 x Water Pump Housing Insert Cup (61A-44322-01-00)
- 1 x Impeller (6E5-44352-00-00)
- 1 x Impeller Key (90280-04M05-00)
- 1 x Water Pump Gasket (6E5-44315-00-00)
- 1 x O-Ring (93210-37160-00)
- 1 x O-Ring (93210-86M38-00)
- 4 x Bolt (91290-08045-00)
- 2 x Dowel Pin (93606-12019-00)
Installation Notes
- Disconnect the battery and remove the engine cover.
- Drain the lower unit gear lube.
- Remove the propeller and unbolt the lower unit (gearcase) from the upper housing.
- Carefully lower the gearcase to expose the water pump assembly.
- Unbolt and remove the old water pump housing and its components, noting the orientation of all parts.
- Clean the mounting surfaces, ensuring they are free of old gasket material and debris.
- Install the new components from the kit in the reverse order of removal.
- Lightly lubricate the new impeller and housing interior with marine grease or soapy water before sliding the housing down over the impeller while turning the driveshaft clockwise.
- Install all new gaskets and O-rings provided to ensure a proper seal.
- Secure the new housing with the provided bolts, tightening them to the manufacturer's specified torque in a crisscross pattern.
- Reinstall the lower unit and propeller, then refill the gearcase with the correct grade and amount of lube.
- Reconnect the battery and test run the engine in water, confirming a strong, steady stream from the tell-tale outlet.
Troubleshooting & FAQ
How do I know if this kit fits my Yamaha outboard?
This kit is designed for specific Yamaha 4-stroke models (F75, F90, F115, LF115, VF115) from 2004 and newer. It may also fit some F50 models. Always check the "Engine & Model Compatibility" table and compare your engine's model/serial number before ordering. Note that this kit does not fit 115B models.
What are the signs of a failing water pump impeller?
Common symptoms include the engine overheating at idle or low speeds, a weak or intermittent water stream from the "tell-tale" outlet, and a dry, cracked, or brittle impeller with a set-in-blades shape upon inspection.
How often should the water pump impeller be replaced?
For preventative maintenance, we recommend inspecting and/or replacing the impeller every 100-200 operating hours or at least once a year, whichever comes first. Replacement is especially critical if operating in saltwater or sandy/silty conditions.
Is this a complete kit? Do I need to buy other parts?
Yes, this is a comprehensive kit that includes the housing, impeller, face plate, insert cup, gaskets, o-rings, bolts, and dowel pins required for a standard replacement. Refer to the "What’s in the Box" section for a full list of contents.
What's the difference between Yamaha part 68V-W0078-00-00 and 68V-W0078-01-00?
Part number 68V-W0078-01-00 is the direct supersession for 68V-W0078-00-00. They are functionally identical, and this kit is a confirmed replacement for both OEM part numbers.
Does this kit fit my F50? The compatibility seems unclear.
While some sources indicate compatibility with Yamaha F50 models from 2004 onwards, this can vary between specific engine serial numbers. We strongly recommend you physically inspect your existing water pump or consult your service manual to confirm part numbers before ordering for an F50 engine.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns?
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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