19278-ZW1-000ZA Honda Marine Flush Valve Spacer | Genuine OEM Outboard Part

🔧 Product Description

Genuine Honda Marine Flush-Valve Spacer - Part Number: 19278-ZW1-000ZA

A genuine dark-grey Honda spacer that positions and supports the ZW1-series flush-valve assembly on selected BF75A/BF90A and BF115A/BF130A outboards.

⚙️ Key Features

• Factory Honda spacer thickness and alignment
• Dark-grey NH8 finish
• Supports the flush-valve cover and internal components
• Maintains correct valve chamber depth
• Direct OEM replacement

🚤 Compatibility

Commonly used on

• Honda Marine four-stroke outboard cooling-system applications

Typically suits

• Engine models:
• BF75A
• BF90A
• BF115A
• BF130A
• HP Range: 75HP-130HP
• Engine Type: Inline four-cylinder four-stroke outboard
• Year Range: Approximately 1999-2007

🔌 Function

Sets the installed position of the flush-valve cover and maintains the correct chamber geometry for spring and valve movement.

⚠️ Common Signs of Failure

• Water leakage at the spacer joint
• Cracking or distortion around fastener holes
• Valve misalignment or sticking
• Uneven sealing caused by corrosion
• Damage from overtightened fasteners

🔄 Supersession & Cross Reference

OEM Supersession Chain

• No supersession; current Honda OEM reference

OEM / Related Numbers

• Honda: 19278-ZW1-000ZA
• Related cover: 19277-ZW1-000
• Related spring: 19279-ZW1-000

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

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