CAT Pumps 31556 NBR Unloader Kit for 67DX39G1I Pumps – OEM Replacement Part

Part Number: 31556
Category: Pressure Washer Pump Parts → Unloader Repair Kits → CAT Pumps Repair Parts
Type: CAT Pumps NBR Unloader Kit for 67DX39G1I Pumps

The CAT Pumps 31556 NBR Unloader Kit is a genuine OEM replacement repair kit designed for servicing compatible CAT Pumps 67DX39G1I triplex plunger pressure washer pumps. This complete unloader repair kit contains the critical NBR (Nitrile Buna-N) sealing components and wear parts required to restore proper pressure regulation, bypass function, and overall system performance.

Key Features & Benefits

• Genuine CAT Pumps OEM Replacement Part
• Designed for CAT Pumps 67DX39G1I pumps
• Complete unloader rebuild and repair kit
• Features durable NBR (Nitrile Buna-N) sealing components
• Restores proper pressure regulation and bypass operation
• Helps eliminate pressure fluctuations and cycling issues
• Reduces leaks caused by worn unloader components
• Supports preventative maintenance and pump rebuild programs
• OEM-quality fit, durability, and reliability
• Helps extend pump and unloader service life

Technical Specifications

Manufacturer: CAT Pumps

Part Number: 31556

Product Type: Unloader Repair Kit

Seal Material: NBR (Nitrile Buna-N)

Application: Unloader Valve Rebuild & Repair

Pump Compatibility: CAT Pumps 67DX39G1I

OEM Replacement: Yes

Kit Coverage: One Unloader Assembly

Compatible Pump Models

Compatible with:

• CAT Pumps 67DX39G1I

Always verify pump model and unloader assembly compatibility before ordering.

Typical Applications

• Pressure washer unloader rebuilds
• Commercial pressure washer maintenance
• Industrial cleaning equipment repairs
• Fleet washing equipment servicing
• Contractor equipment maintenance
• Equipment rental fleet repairs
• Pump restoration projects
• Preventative maintenance programs

Performance Advantages

• Restores proper pressure regulation and bypass control
• Helps eliminate pressure surging and unloader cycling
• Improves trigger gun response and system efficiency
• Reduces leakage caused by worn seals and internal components
• Supports smooth and consistent pressure output
• Helps protect pump components from excessive pressure buildup
• NBR sealing materials provide reliable durability and wear resistance
• Genuine OEM components ensure proper fit and performance
• Ideal for preventative maintenance and professional rebuild procedures