FASWORX Premium Water Pump Impeller Repair Kit with Housing for 1973-1977 Johnson Evinrude V4 85 115 135 HP Outboards, Replaces OEM 0439140 439140 777807 18-3384, Dual-Tube Recirculating System

FASWORX Premium V4 Outboard Water Pump Rebuild Kit (Replaces OEM 439140) Don't let a failing water pump end your day on the water. The FASWORX Premium Water Pump Repair Kit is engineered to deliver reliable, professional-grade cooling performance that outlasts standard aftermarket alternatives. Whether you are running offshore in saltwater or cruising the lake, this kit ensures your outboard maintains optimal operating temperatures under extreme conditions. Built Better with Advanced Material Science We designed this kit using premium materials to combat the most common causes of water pump failure: dry rotting, chemical degradation, and saltwater corrosion. EPDM Rubber Impeller: Scientifically engineered to maintain its structural integrity and flexibility, providing maximum water flow and resisting the friction that destroys standard rubber. 316 Stainless Steel Components: The high-gauge insert cup and wear plate provide a frictionless, corrosion-proof barrier that protects the housing from scoring. Chemical-Resistant Alloy Housing: Replaces cracked or warped factory housings with a highly durable, dual-tube specific mold. Precision Marine Gaskets: High-tolerance seals and O-rings ensure an airtight fit to eliminate pressure leaks.

• EXACT OEM REPLACEMENT: Engineered to seamlessly replace OMC/BRP OEM part numbers 0439140, 439140, and 777807 (as well as Sierra 18-3384). Restores factory-level cooling efficiency to your V4 outboard motor.
• MARINE-GRADE MATERIAL SCIENCE: Built for harsh saltwater and freshwater environments. The heavy-duty impeller is constructed from premium, tear-resistant EPDM rubber, paired with a 316 stainless steel insert cup and wear plate to prevent scoring and corrosion.
• SPECIFIC V4 FITMENT: Compatible with 1973–1976 Johnson/Evinrude V4 engines (85HP, 115HP, 135HP) and 1977 85HP/115HP models. Note: Your motor MUST be equipped with a dual-tube recirculating cooling system.
• COMPLETE REBUILD SOLUTION: This comprehensive kit includes everything required for a full water pump overhaul: 1x Alloy Pump Housing, 1x EPDM Impeller, 1x Stainless Insert Cup, 1x Wear Plate, plus all necessary precision O-rings, gaskets, oil seals, and the woodruff key.
• CRITICAL FITMENT WARNING: Please verify your shaft length and year before purchasing. For 1977 85HP and 115HP motors, this kit fits 20-inch shaft models ONLY. It does NOT fit 1977 140HP V4s, 1976 200HP, or 1977 175/200HP V6 models.