The Honda 91302-PNA-004 Chain Case O-Ring is a genuine OEM sealing component designed for BF115, BF135, BF140, and BF150 outboard motors. As a direct Honda OEM part, it is manufactured to the same specification as the original, ensuring a proper seal the first time. Confirm your motor's serial number against the fitment table before ordering, as Honda supersedes parts at defined serial breaks across the BF115, BF135, BF140, and BF150 lines.
Key Features
- OEM Sealing Integrity — manufactured to Honda's original specification, delivering the compression and dimensional accuracy a chain case seal demands to keep oil in and water out
- Direct OEM Replacement — this O-Ring seats into the same groove as the original, with no trimming or adaptation required to install
- Broad BF-Series Fitment — listed for BF115, BF135, BF140, and BF150 Honda outboard motors; verify your serial number against the fitment table to confirm the correct supersession for your unit
- Leak Prevention — a worn or deformed chain case O-Ring allows oil to escape and water to enter, leading to accelerated wear inside the chain case; replacing it at the first sign of seepage protects the components it encloses
The chain case O-Ring forms a pressure-tight seal around the chain case cover on Honda BF-series outboard motors, keeping the lubricant inside the chain case where it belongs while blocking water intrusion from the marine environment. The chain case itself houses the timing or drive chain that synchronises critical engine components, so maintaining a reliable seal is essential to protecting those internal parts. When this O-Ring hardens, cracks, or takes a compression set, the seal fails — allowing oil loss and potential contamination that can accelerate wear and lead to more extensive repairs.
Part Details
| Part Number | 91302-PNA-004 |
|---|---|
| Brand | Honda |
| Part Type | Genuine OEM |
| Description | Chain Case O-Ring |
Compatibility & Fitment
| Name | Models | Serial Range |
|---|---|---|
| Outboard Motor | BF115, BF135, BF140, BF150 | All |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
