Water Pump Housing – Fits Yamaha F2.5 2-Stroke Outboard (Replaces 69M-G5321-00-94)
Water Pump Housing – Fits Yamaha F2.5 2-Stroke Outboard (Replaces 69M-G5321-00-94) is backordered and will ship as soon as it is back in stock.
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Delivery and Shipping
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Water Pump Housing – Fits Yamaha F2.5 2-Stroke Outboard (Replaces 6...
Product Details
This Water Pump Housing – Fits Yamaha F2.5 2-Stroke Outboard (Replaces 69M-G5321-00-94) is a compatible replacement for Yamaha F2.5 4-Stroke outboard engines (2003 and newer). Located in the lower casing assembly, it's a critical component of the engine's cooling system, ensuring proper water flow to prevent overheating.
This part serves as a direct interchange for Yamaha part number 69M-G5321-00-94 and Parsun F2.6-03000008.
- Installation Location: Lower Casing Assembly
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Yamaha | 69M-G5321-00-94 |
| Parsun | F2.6-03000008 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This housing is a confirmed fit for the following Yamaha 4-stroke models from 2003 and newer.
| Brand | Model | Rated HP | Stroke | Years | OEM Part No. |
|---|---|---|---|---|---|
| Yamaha | F2.5 | 2.5 | 4-Stroke | 2003+ | 69M-G5321-00-94 |
| Yamaha | F2.5MSH | 2.5 | 4-Stroke | 2003–2010 | 69M-G5321-00-94 |
| Yamaha | F2.5MSHB | 2.5 | 4-Stroke | 2003 | 69M-G5321-00-94 |
| Yamaha | F2.5MSHC | 2.5 | 4-Stroke | 2004 | 69M-G5321-00-94 |
| Yamaha | F2.5MSHD | 2.5 | 4-Stroke | 2005 | 69M-G5321-00-94 |
| Yamaha | F2.5SMHA | 2.5 | 4-Stroke | 2011–2015 | 69M-G5321-00-94 |
| Yamaha | F2.5LMHA | 2.5 | 4-Stroke | 2013–2015 | 69M-G5321-00-94 |
This part is also listed as compatible with certain Parsun models, though specific years are unconfirmed. Please verify the part number F2.6-03000008 matches your service manual.
| Brand | Model | Rated HP | Stroke | OEM Part No. |
|---|---|---|---|---|
| Parsun | F2.6 | 2.6 | 4-Stroke | F2.6-03000008 |
Technical Specs
- Product Type
- Water Pump Housing
- Installation
- Lower Casing Assembly
- Housing Color
- Silver/Gray (metal finish)
- Dimensions
- 8.0" (L) x 5.0" (W) x 0.5" (H)
What’s in the Box
- 1 x Water Pump Housing (Replaces 69M-G5321-00-94 / F2.6-03000008)
Installation Notes
- Disconnect the engine's battery and spark plug wire for safety.
- Place a drain pan under the lower unit and remove the gearcase oil drain screw to empty the oil.
- Remove the bolts securing the lower unit (gearcase) to the upper engine housing.
- Carefully separate the lower unit from the engine. The driveshaft and shift shaft will disengage.
- Locate the water pump assembly on top of the gearcase and remove the bolts securing the old housing.
- Lift off the old housing. Clean any old gasket material or debris from the mating surfaces.
- Position the new water pump housing, ensuring any seals and the impeller are correctly aligned.
- Tighten the housing bolts to the manufacturer's specified torque.
- Re-install the lower unit, carefully aligning the shafts, and secure it with its bolts.
- Refill the gearcase with fresh marine gear oil before running the engine.
Troubleshooting & FAQ
How can I confirm this housing fits my F2.5 model?
The surest way is to match the OEM part number 69M-G5321-00-94 to the one listed in your engine's service manual. While our compatibility table is accurate, a part number match is the best confirmation.
What are the signs of a failing water pump housing?
Signs include a weak or no water stream from the "telltale" outlet, engine overheating alarms, and visible cracks or warping on the old housing upon inspection. Reduced cooling performance is the primary indicator.
Can I replace just the housing or do I need a full kit?
If only the housing is cracked or damaged but the impeller, gaskets, and wear plate are in good condition, you can replace just the housing. However, it is standard practice to replace the impeller and gaskets at the same time, as they are wear items.
Is this part made of plastic or metal?
This housing is made of corrosion-resistant metal, consistent with OEM specifications, to ensure durability in marine environments.
How often should the water pump be serviced?
Most manufacturers recommend inspecting the water pump impeller and housing annually or every 100 hours of use, whichever comes first. Proactive replacement can prevent engine damage from overheating.
What’s the difference between this and an original Yamaha part?
This is an aftermarket part designed to meet or exceed OEM specifications for fit, form, and function. It offers the same performance and cooling efficiency as the original at a better value.
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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