Water Pump Repair Kit – Fits Yamaha F90B & F115 4-Stroke (Replaces 68V-W0078-01-00)
Water Pump Repair Kit – Fits Yamaha F90B & F115 4-Stroke (Replaces 68V-W0078-01-00) is backordered and will ship as soon as it is back in stock.
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Water Pump Repair Kit – Fits Yamaha F90B & F115 4-Stroke (Repla...
Water Pump Repair Kit – Fits Yamaha F90B & F115 4-Stroke (Replaces 68V-W0078-01-00) is backordered and will ship as soon as it is back in stock.
Product Details
This Water Pump Repair Kit – Fits Yamaha F90B & F115 4-Stroke Outboards (Replaces 68V-W0078-01-00) is a complete OEM-quality kit designed to restore the cooling system on Yamaha F90B and F115 series 4-stroke outboard motors. The package contains all the necessary components for a full rebuild of the water pump, excluding the housing.
This kit serves as a direct interchange for Yamaha part numbers 68V-W0078-00-00 and 68V-W0078-01-00, as well as Sierra part 18-3442G.
- Installation Method: Lower Unit Service Replacement
- Key Components: Includes impeller, gaskets, plate, and hardware for a complete rebuild.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number | Superseded By |
|---|---|---|
| Yamaha | 68V-W0078-00-00 | 68V-W0078-01-00 |
| Yamaha | 68V-W0078-01-00 | |
| Sierra | 18-3442G |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For Yamaha Outboards: This kit fits a wide range of Yamaha F115, F90, and VF115 four-stroke models. Please check your specific model and year for an exact match.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|---|
| Yamaha | F115JA | 115 | 4-Stroke | 2011–2014 | 68V-W0078-01-00 | |
| Yamaha | F115JB | 115 | 4-Stroke | 2014–2016 | 68V-W0078-01-00 | |
| Yamaha | F115LA | 115 | 4-Stroke | 2011–2014 | 68V-W0078-01-00 | |
| Yamaha | F115LA | 115 | 4-Stroke | 2006–2011 | 68V-W0078-01-00 | |
| Yamaha | F115LB | 115 | 4-Stroke | 2014–2016 | 68V-W0078-01-00 | |
| Yamaha | F115TJR | 115 | 4-Stroke | 2004–2007 | 68V-W0078-01-00 | |
| Yamaha | F115TJRA | 115 | 4-Stroke | 2002 | 68V-W0078-01-00 | |
| Yamaha | F115TJRB | 115 | 4-Stroke | 2003 | 68V-W0078-01-00 | |
| Yamaha | F115TJRC | 115 | 4-Stroke | 2004 | 68V-W0078-01-00 | |
| Yamaha | F115TJRD | 115 | 4-Stroke | 2005 | 68V-W0078-01-00 | |
| Yamaha | F115TLR | 115 | 4-Stroke | 2004–2011 | 68V-W0078-01-00 | |
| Yamaha | F115TLRA | 115 | 4-Stroke | 2002 | 68V-W0078-01-00 | |
| Yamaha | F115TLRB | 115 | 4-Stroke | 2003 | 68V-W0078-01-00 | |
| Yamaha | F115TLRC | 115 | 4-Stroke | 2004 | 68V-W0078-01-00 | |
| Yamaha | F115TLRD | 115 | 4-Stroke | 2005 | 68V-W0078-01-00 | |
| Yamaha | F115TXR | 115 | 4-Stroke | 2004–2011 | 68V-W0078-01-00 | |
| Yamaha | F115TXRA | 115 | 4-Stroke | 2002 | 68V-W0078-01-00 | |
| Yamaha | F115TXRB | 115 | 4-Stroke | 2003 | 68V-W0078-01-00 | |
| Yamaha | F115TXRC | 115 | 4-Stroke | 2004 | 68V-W0078-01-00 | |
| Yamaha | F115TXRD | 115 | 4-Stroke | 2005 | 68V-W0078-01-00 | |
| Yamaha | F115XA | 115 | 4-Stroke | 2011–2014 | 68V-W0078-01-00 | |
| Yamaha | F115XA | 115 | 4-Stroke | 2006–2011 | 68V-W0078-01-00 | |
| Yamaha | F115XB | 115 | 4-Stroke | 2014–2016 | 68V-W0078-01-00 | |
| Yamaha | F90B | 90 | 4-Stroke | 2016–present | 68V-W0078-01-00 | |
| Yamaha | LF115TXR | 115 | 4-Stroke | 2004–2011 | 68V-W0078-01-00 | |
| Yamaha | LF115TXRA | 115 | 4-Stroke | 2002 | 68V-W0078-01-00 | |
| Yamaha | LF115TXRB | 115 | 4-Stroke | 2003 | 68V-W0078-01-00 | |
| Yamaha | LF115TXRC | 115 | 4-Stroke | 2004 | 68V-W0078-01-00 | |
| Yamaha | LF115TXRD | 115 | 4-Stroke | 2005 | 68V-W0078-01-00 | |
| Yamaha | LF115XA | 115 | 4-Stroke | 2011–2014 | 68V-W0078-01-00 | |
| Yamaha | LF115XA | 115 | 4-Stroke | 2006–2011 | 68V-W0078-01-00 | |
| Yamaha | LF115XB | 115 | 4-Stroke | 2014–2016 | 68V-W0078-01-00 | |
| Yamaha | VF115LA | 115 | 4-Stroke | 2013–2015 | 68V-W0078-01-00 |
Technical Specs
- Product Type
- Water Pump Repair Kit
- Installation
- Lower Unit Service Replacement
- Warranty
- Standard Yamaha Marine OEM Parts Warranty
- Other Technical Attributes
- Complete kit for water pump rebuild without housing
What’s in the Box
- 1 x Cartridge Insert (61A-44322-02-00)
- 1 x Outer Plate Cartridge (68V-44323-00-00)
- 1 x Water Pump Gasket (6E5-44315-A0-00)
- 1 x Impeller (6E5-44352-01-00)
- 4 x Bolt with Washer (90119-08M14-00)
- 1 x Woodruff Key (90280-04M05-00)
- 1 x O-Ring (93210-37M67-00)
- 1 x O-Ring (93210-86M38-00)
- 2 x Dowel Pin (93606-12019-00)
Installation Notes
- Disconnect the negative battery cable and remove the propeller.
- Place a drain pan under the lower unit and remove the gear lube drain screw to empty the oil.
- Remove the bolts securing the lower unit to the engine's midsection and carefully lower it.
- Unbolt and remove the water pump housing to access the old impeller and gaskets.
- Clean all mating surfaces thoroughly, removing any old gasket material or sealant.
- Install the new cartridge insert, plate, O-rings, and impeller from the kit. Ensure the impeller vanes are oriented correctly.
- Install the new gaskets and re-secure the water pump housing, tightening bolts to the manufacturer's specified torque.
- Reinstall the lower unit, refill with fresh gear lube, and reinstall the propeller.
- Reconnect the battery, start the engine in a suitable water source, and verify a strong, steady stream from the cooling system's tell-tale outlet.
Troubleshooting & FAQ
How do I know if this kit fits my specific Yamaha outboard?
This kit is designed for Yamaha F115 models (2002–present), F90B models (2016–present), and select VF115 outboards. To ensure a perfect match, please compare your engine's model, serial number, and year against the detailed compatibility table on this page.
Does this kit include the water pump housing?
No, this is a repair kit that includes the internal wear components like the impeller, cartridge, plate, gaskets, and seals. It is designed to rebuild your existing water pump assembly, assuming the metal or plastic housing is not cracked, warped, or excessively scored.
What are the signs of a failing water pump?
Common symptoms include the engine overheating at idle or low speeds, a weak or intermittent water stream from the tell-tale (peephole) outlet, and a brittle, cracked, or melted impeller upon inspection.
How often should I replace my outboard's impeller?
For preventative maintenance, it is recommended to inspect or replace the water pump impeller every 100-200 service hours or at least once a year, whichever comes first. This helps prevent unexpected cooling system failure and potential engine damage.
Can I install this kit myself?
Installation is manageable for individuals with good mechanical skills and the proper tools, as it involves removing the lower unit. However, due to the critical nature of the cooling system, we recommend professional installation to ensure correct assembly and prevent engine damage.
Is there a difference between the superseded part 68V-W0078-00-00 and this -01-00 kit?
The part number 68V-W0078-01-00 is the latest official replacement from Yamaha, superseding the older 68V-W0078-00-00. It may include minor updates to materials or components for improved durability and performance. It is fully backward compatible.
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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