Honda Water Pump O-Ring for BF75, BF90, BF115 & BF130 4-Stroke Outboards – Replaces 91356-ZW1-B00
Honda Water Pump O-Ring for BF75, BF90, BF115 & BF130 4-Stroke Outboards – Replaces 91356-ZW1-B00 is backordered and will ship as soon as it is back in stock.
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Honda Water Pump O-Ring for BF75, BF90, BF115 & BF130 4-Stroke ...
Honda Water Pump O-Ring for BF75, BF90, BF115 & BF130 4-Stroke Outboards – Replaces 91356-ZW1-B00 is backordered and will ship as soon as it is back in stock.
Product Details
This water pump O-ring is a replacement sealing ring for the water pump assembly on selected Honda 4-stroke outboard engines. It is listed for Honda BF75, BF90, BF115, and BF130 applications and helps seal the water pump housing or related water pump components during cooling-system service.
This aftermarket replacement corresponds to Honda OEM part number 91356-ZW1-B00. It is supplied as one individual O-ring, not as an impeller or complete water pump kit.
- Water pump O-ring for selected Honda 4-stroke outboards
- Application range includes BF75, BF90, BF115, and BF130 variants listed below
- Replacement reference: Honda 91356-ZW1-B00
- Useful for water pump, impeller, and lower-unit cooling-system service
Part Number Matrix
Use the reference below to compare the part number with your original component and engine parts diagram.
| Brand | Part Number |
|---|---|
| Honda | 91356-ZW1-B00 |
Engine & Model Compatibility
The following Honda 4-stroke model variants are listed with this water pump O-ring reference. Model suffixes and serial or production conditions can vary, so confirm the complete engine model and parts diagram before ordering.
| Brand | Model family and listed variants | Rated HP | Stroke | Fitment note |
|---|---|---|---|---|
| Honda | BF75A, BF75B, BF75C, BF75D, BF75K2, BF75K3, BF75E, BF75F; BF75DK0, BF75DA2, BF75DA3 | 75 | 4-Stroke | Verify the complete suffix and parts diagram. |
| Honda | BF90A2, BF90A3, BF90DK0, BF90DK2; additional listed BF90A1, BF90AV, BF90AX, BF90D, BF90DK4, BF90DK5 variants | 90 | 4-Stroke | Verify the complete suffix and parts diagram. |
| Honda | BF115A2; BF115D, BF115DK1, BF115J, BF115A1, BF115A3, BF115AX | 115 | 4-Stroke | Verify the complete suffix and parts diagram. |
| Honda | BF130A1, BF130A2, BF130AX; BF130A3 | 130 | 4-Stroke | Verify the complete suffix and parts diagram. |
Technical Specs
- Component
- Water pump O-ring
- OEM Reference
- 91356-ZW1-B00
- Application
- Water pump sealing component
- Engine Type
- Selected Honda 4-stroke outboards
- Rated Horsepower Range
- 75HP, 90HP, 115HP, and 130HP applications listed above
What's in the Box
- 1 × Water pump O-ring
The impeller, water pump housing, gaskets, key, and other service components are not included unless separately stated.
Installation Notes
- Disconnect the battery and fuel supply as appropriate, then remove the lower unit according to the engine service manual.
- Remove the water pump housing and take out the old O-ring and other service components as required.
- Clean the sealing groove and mating surfaces thoroughly, removing debris and old gasket material.
- Inspect the water pump housing, cover, impeller, and mating surfaces for scoring, distortion, or damage.
- Apply only a light coating of lubricant recommended by the engine service manual, if applicable.
- Place the new O-ring in its correct groove, making sure it is seated evenly and is not twisted or pinched.
- Reinstall the impeller and water pump housing according to the service-manual procedure.
- Align the drive key or pin as specified and tighten fasteners to the manufacturer’s torque specifications.
- Reinstall the lower unit and reconnect all components removed during service.
- Run the engine using the correct water-supply procedure and check for leaks and proper cooling-water flow.
Troubleshooting & FAQ
What does this product replace?
This O-ring is listed as a replacement for Honda OEM reference 91356-ZW1-B00. Compare the number and the engine parts diagram before installation.
Is this a complete water pump kit?
No. This listing is for one water pump O-ring only. It does not include an impeller, key, housing, gasket, or complete water pump assembly.
Which Honda engines use this O-ring?
Catalog listings associate this reference with selected Honda BF75, BF90, BF115, and BF130 4-stroke variants. Because suffixes and production conditions differ, confirm the complete model designation and parts diagram for your engine.
Can I reuse the old O-ring?
Reusing an O-ring is not recommended during water pump service. Removal, compression, heat, and age can reduce its sealing ability. Install a new O-ring whenever the water pump is opened.
What should I use to lubricate the O-ring?
Follow the lubricant guidance in your engine service manual. Use only a lubricant compatible with the seal material and cooling-system application, and apply a light coating to help prevent pinching during assembly.
Will this fit every BF75, BF90, BF115, or BF130?
Not necessarily. The listed model families contain multiple suffixes and production variants. Confirm the complete model, serial or production information where applicable, and the water pump parts diagram before ordering.
Is this an OEM Honda part?
No. This is an aftermarket replacement corresponding to Honda OEM reference 91356-ZW1-B00.
Safety & Important Info
- Confirm the complete engine model, suffix, and parts-diagram reference before purchase.
- Do not rely on horsepower alone to determine fitment.
- Inspect the water pump housing, impeller, key, gaskets, and mating surfaces during service.
- Use the engine manufacturer’s service manual for removal, installation, lubrication, torque, and cooling-system testing procedures.
- Professional installation is recommended if you are not experienced with outboard lower-unit or water-pump service.
About Sea Sierra
- We supply replacement marine components for routine outboard maintenance and repair.
- Each listing is organized around the applicable component and manufacturer reference to help with parts identification.
- Compare the replacement part with your original component and engine diagram before installation.
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