40201-ZW1-020ZA Honda Case Extension | Genuine Used Part

🔧 Product Description

Genuine Honda Oyster Silver Long Extension Case - Part Number: 40201-ZW1-020ZA

A genuine Honda long-shaft extension case for selected BF75, BF90, BF115, BF130 and BF150 four-stroke outboards.

The case forms the main midsection between the engine pan and gearcase, housing the vertical driveshaft, exhaust passage, cooling-water tube and lower engine mounts. This version is finished in Honda NH282MU Oyster Silver Metallic-U.

⚙️ Key Features

• Genuine Honda OEM long extension case
• Correct part number 40201-ZW1-020ZA
• NH282MU Oyster Silver Metallic-U finish
• Long-shaft midsection configuration
• Used across selected Honda 75HP to 150HP four-stroke outboards

🚤 Compatibility

Commonly used on

• Honda ZW1 long-shaft extension-case assemblies
• 20-inch BF75, BF90, BF115, BF130 and BF150 midsections

Typically suits

• Engine models:
• Honda BF75A
• Honda BF75AT
• Honda BF90A
• Honda BF90AT
• Honda BF115A
• Honda BF115A1
• Honda BF115A2
• Honda BF115A3
• Honda BF115A4
• Honda BF115A5
• Honda BF115A6
• Honda BF115AK0
• Honda BF115D
• Honda BF130A
• Honda BF130A1
• Honda BF130A2
• Honda BF130A3
• Honda BF130A4
• Honda BF150A long-shaft configurations where 40201-ZW1-020ZA is specified
• HP Range: 75HP - 150HP
• Engine Type: Honda inline four-cylinder four-stroke outboard
• Shaft Length: Long / approximately 20 inches
• Year Range: Approximately 1997 - 2012

🔌 Function

The extension case establishes the correct engine height for a long-shaft transom and encloses the driveshaft, exhaust and cooling-water transfer components.

⚠️ Common Signs of Failure

• Corrosion or pitting around exhaust passages
• Cracks following lower-unit impact
• Gearcase mounting threads damaged
• Lower engine-mount locations worn
• Driveshaft or water-tube alignment affected by distortion

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 40201-ZW1-020ZA later long-shaft extension-case revision
• 40201-ZW1-010ZA earlier related long-shaft extension-case reference

OEM / Related Numbers

• 40201-ZW1-020ZA
• 40201ZW1020ZA
• 40201-ZW1-010ZA
• 40201ZW1010ZA
• 50111-ZW1-010ZA related lower mounting housing
• 19251-ZW1-900 related long water tube
• 40212-ZW1-010ZA related drain-plug cover
• Related lower engine-mount and driveshaft-bushing components

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

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