91310-PC6-004 Honda Marine O-Ring 16x2.7mm | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Oil Pump / Oil Case O-Ring 15.5 × 2.7 mm - Part Number: 91310-PC6-004

A genuine Honda O-ring with an official nominal size of approximately 15.5 × 2.7 mm. It is used in the oil-pump/oil-case assembly on the later BF75D, BF80A, BF90D and BF100A inline-four outboard platform.

⚙️ Key Features

• Genuine Honda oil-system sealing O-ring
• Official nominal dimensions: approximately 15.5 × 2.7 mm
• Oil- and heat-resistant elastomer
• Correct material and cross-section for the oil-pump/oil-case passage

🚤 Compatibility

Commonly used on

• Honda BF75D
• Honda BF80A
• Honda BF90D
• Honda BF100A
• Only oil-pump/oil-case revisions whose diagram specifies 91310-PC6-004

Typically suits

• HP Range: 75-100 HP
• Engine Type: Inline four-cylinder EFI four-stroke outboard
• Year Range: 2007 onward, model dependent
• Serial / Identification Range: Confirm the complete frame serial, oil-case diagram and official 15.5 × 2.7 mm specification.

🔌 Function

Seals the oil-pump or oil-case passage to maintain lubrication pressure and prevent oil leakage.

⚠️ Common Signs of Failure

• Oil seepage at the oil-pump or oil-case joint
• Low or unstable oil pressure caused by internal leakage
• O-ring is flattened, hardened, swollen or cut
• Seal has been disturbed during oil-pump service

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 91310-PC6-004 - current verified Honda service reference
• No later direct Honda supersession confirmed

OEM / Related Numbers

• 91310-PC6-004
• 91310PC6004

Aftermarket / Verified Equivalents

• No verified direct aftermarket equivalent with confirmed Honda material specification

📦 Condition

• Genuine Honda Marine OEM part
• Brand new
• Supplied in genuine Honda or equivalent protective packaging