16740-ZY3-A01 Honda Fuel Regulator | Genuine Used Part

🔧 Product Description

Genuine Honda V6 Fuel Pressure Regulator - Part Number: 16740-ZY3-A01

A genuine Honda fuel-pressure regulator for selected BF175, BF200, BF225 and BF250 V6 EFI four-stroke outboards.

The regulator maintains fuel-rail pressure at approximately 43-45 PSI so the injectors can deliver a consistent quantity of fuel under changing engine loads.

⚙️ Key Features

• Genuine Honda V6 fuel-pressure regulator
• Correct current part number 16740-ZY3-A01
• Supersedes earlier 16740-ZY3-003
• Calibrated for approximately 43-45 PSI
• Suitable for Honda large-V6 EFI fuel rails

🚤 Compatibility

Commonly used on

• Honda large-V6 EFI fuel systems

Typically suits

• Engine models:
• Honda BF175 - approximately 2007 onward
• Honda BF200 - approximately 2002 onward
• Honda BF225 - approximately 2002 onward
• Honda BF250 - approximately 2007 onward
• Standard, counter-rotation and selected later digital-control models where 16740-ZY3-A01 is specified
• HP Range: 175HP - 250HP
• Engine Type: Honda 3.5L or 3.6L V6 EFI four-stroke outboard
• Regulated Pressure: Approximately 43-45 PSI

🔌 Function

The regulator maintains fuel pressure at the injectors and returns excess fuel to the vapor separator or low-pressure side of the system.

⚠️ Common Signs of Failure

• Engine is difficult to start
• Low fuel pressure causes hesitation or reduced power
• Excessive pressure causes rich running and fouled spark plugs
• Idle is unstable or the engine stalls
• Fuel leaks from the regulator diaphragm or O-ring

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 16740-ZY3-A01 → Supersedes 16740-ZY3-003
• 16740-ZY3-003 earlier pressure-regulator reference

OEM / Related Numbers

• 16740-ZY3-A01
• 16740-ZY3-003
• 16741-PG7-005 regulator O-ring
• 16751-ZY3-000 related fuel pipe
• 16752-ZY3-A00 related fuel joint

Aftermarket / Verified Equivalents

• Fuel Pump Factory: PR-035
• FPF 43-45 PSI Honda marine regulator
• SMA6929 replacement pressure regulator
• Generic 16740-ZY3-A01 direct replacement

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated