Crankshaft - Johnson / Evinrude 40-55 HP 2 Cylinder Looper (1999-2005) OEM# 0439939 | WSM 850-121

Crankshaft Johnson / Evinrude 40 - 55 Hp 2 Cylinder Looper OEM# 0439939

This WSM crankshaft is a quality aftermarket replacement part designed for Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 and 2 other compatible models.

It replaces selected OEM reference numbers including 0439939 and is suitable for service, repair and rebuild work.

Key Features

• Quality aftermarket replacement part from WSM
• Engineered for dependable fit, function and service life
• Designed for marine and powersports repair and maintenance
• Compatible with 13 listed fitments
• Replaces selected OEM reference numbers listed below

Product Details

• Brand: WSM
• WSM Part Number: 850-121
• Product: Crankshaft
• OEM Reference: 0439939
• Application: Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 and 2 other compatible models

Product Fitment

This part is suitable for the following models:

• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 1999
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2000
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2001
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2002
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2003
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2004
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 50 – 2005
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 55 – 1999
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 55 – 2000
• Johnson/Evinrude 2 Cyl 3.187 Bore Looper 55 – 2001
• Johnson/Evinrude 2 Cyl 55 – 2003
• Johnson/Evinrude 2 Cyl 55 – 2004
• Johnson/Evinrude 2 Cyl 55 – 2005

Why Buy WSM

WSM is a trusted manufacturer of aftermarket marine and powersports parts, known for dependable quality, strong fitment coverage and workshop-ready replacement components.

You May Also Need

Browse related parts for compatible models:

• Water Pump Impeller Johnson / Evinrude 40 - 75 Hp OEM# 0389557 – 700-300
• Thermostat Johnson / Evinrude 5 - 70 / 120 - 140 / 250 Hp OEM# 0436195 – 775-100
• Connecting Rod Johnson / Evinrude 35 - 60 Hp Looper OEM# 0387387 – 800-100
• Wires Ignition Johnson / Evinrude 2 - 300 Hp 81-07 OEM# 0582365 – 368-100-04

Please use the fitment guide, OEM references and images to confirm this is the correct part before ordering.