Quick Connect Plug 3/8" FNPT Zinc-Plated Steel – OEM Replacement Part

Part Number: 3878
Category: Pressure Washer Fittings → Quick Connect Couplers → Quick Connect Plugs
Type: Zinc-Plated Steel Female Thread Quick Connect Plug

The Quick Connect Plug 3/8" FNPT Zinc-Plated Steel is a heavy-duty OEM replacement fitting designed for fast, secure connections within pressure washer systems and high-pressure cleaning equipment. Constructed from durable zinc-plated steel, this quick connect plug provides excellent strength, corrosion resistance, and reliable performance in commercial and industrial pressure washing applications.

Key Features & Benefits

• OEM-quality quick connect plug
• Durable zinc-plated steel construction
• Industry-interchangeable quick connect design
• Corrosion-resistant plated finish
• Fast tool-free connection and disconnection
• 3/8" FNPT threaded connection
• Rated up to 5000 PSI with compatible brass sockets
• Suitable for commercial and industrial applications
• Compatible with a wide variety of pressure washer accessories
• Designed for long service life and dependable performance

Technical Specifications

Product Type: Quick Connect Plug

Material: Zinc-Plated Steel

Thread Size: 3/8" FNPT

Thread Type: Female National Pipe Thread

Connection Style: Industry Interchangeable Quick Connect

Maximum Pressure: 5000 PSI (with compatible brass socket)

Application: High-Pressure Fluid Connections

OEM Replacement: Yes

Typical Applications

• Pressure washer hose assemblies
• Spray gun connections
• Lance and wand hookups
• Surface cleaner connections
• High-flow pressure washer systems
• Commercial cleaning equipment
• Industrial wash-down systems
• Equipment repairs and maintenance
• Pressure washer plumbing installations

Performance Advantages

• Allows rapid accessory changes without tools
• Zinc-plated finish helps resist corrosion and wear
• Supports demanding high-pressure cleaning applications
• Provides dependable, leak-resistant connections
• Reduces downtime during equipment setup and maintenance
• Compatible with industry-standard quick connect fittings
• Suitable for high-flow pressure washer systems
• Helps improve efficiency and workflow productivity
• Built for long-term commercial and industrial use

Maintenance Recommendations

• Inspect the plug regularly for wear, corrosion, or damage.
• Ensure proper engagement with compatible quick connect sockets before operation.
• Replace worn or damaged fittings immediately.
• Keep connection surfaces clean and free of dirt and debris.
• Apply appropriate thread sealant when installing threaded accessories.
• Periodically inspect the complete quick connect assembly for leaks and excessive wear.