90501-16M11 Yamaha Compression Spring | Genuine OEM Yamaha Outboard Part

🔧 Product Description

Genuine Yamaha Cooling System Pressure Control Valve Spring - Part Number: 90501-16M11

A genuine Yamaha compression spring for selected outboard cooling-system pressure-control and poppet-valve assemblies.

The spring holds the pressure-control valve closed at low cooling-water pressure and allows it to open as pump pressure rises, regulating bypass flow through the engine.

⚙️ Key Features

• Genuine Yamaha OEM compression spring
• Correct Yamaha part number 90501-16M11
• Used in cooling-system pressure-control valves
• Maintains calibrated poppet-valve closing force
• Included in aftermarket pressure-control valve kits

🚤 Compatibility

Commonly used on

• Yamaha cooling-water pressure-control valves
• Poppet-valve and bypass assemblies

Typically suits

• Engine models:
• Yamaha 90HP outboards
• Yamaha 115HP and 130HP outboards
• Yamaha 150HP and 175HP outboards
• Yamaha 200HP, 225HP and 250HP outboards
• Yamaha 300HP outboards where specified
• Yamaha F75, F80, F90 and F100 four-strokes
• Yamaha F115 four-stroke
• Yamaha F150 and F175 four-strokes
• Yamaha F200 inline-four applications
• Two-stroke, HPDI and four-stroke engines using pressure-control kit 60H-12416-00
• HP Range: Approximately 75HP - 300HP
• Engine Type: Yamaha two-stroke, HPDI and four-stroke outboard
• Year Range: Cooling-system design controlled.

🔌 Function

The spring controls the opening pressure of the cooling-system bypass valve, balancing low-speed cooling with high-speed water flow.

⚠️ Common Signs of Failure

• Engine overheats at higher speed
• Engine runs too cold because the valve remains open
• Spring is corroded or broken
• Valve does not return to its seat
• Cooling-water pressure becomes unstable

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 90501-16M11 current OEM pressure-control spring reference

OEM / Related Numbers

• 90501-16M11
• 90501-16M11-00
• 60H-12416-00 related pressure-control valve kit
• Yamaha poppet-valve spring
• Cooling-water bypass spring

Aftermarket / Verified Equivalents

• Spring supplied in aftermarket 60H-12416-00 pressure-control valve kits
• Recmar-style Yamaha poppet-valve service kit
• Aftermarket cooling-pressure valve spring for 90501-16M11

📦 Condition

• Genuine Yamaha part
• Brand new
• Supplied in original or equivalent packaging