Cat Pumps KPL308 Unloader Plumbing Kit – Fits 5DX, 6DX & 66DX Pumps

Model: KPL308
Category: Pressure Washer → Pump Accessories → Unloaders / Plumbing Kits
Type: Unloader Plumbing Kit – Fits 5DX, 6DX & 66DX Pumps, Genuine OEM CAT Pumps

The CAT Pumps KPL308 Unloader Plumbing Kit is a genuine OEM CAT Pumps complete plumbing and pressure-regulating unloader assembly designed specifically for 5DX, 6DX, and 66DX series pumps. This all-in-one kit simplifies installation and replacement by including the correct EZ-Start unloader and matched OEM fittings, ensuring proper pressure regulation, bypass routing, and thermal protection.

Compatibility

• Pump Series:

  • 5DX

  • 6DX

  • 66DX

• Pump Connections:

  • Inlet: 1/2″

  • Outlet: 3/8″

• Fits all pumps with 1/2″ inlet & 3/8″ outlet

Kit Includes

• PULSAR4KHPEZ EZ-Start Pressure Unloader

• 3/8″ High-Pressure Hex Nipple

• (2) Hose Barbs

• 3/8″ HP Female × Male 45° Elbow

• 3/8″ Bypass Hose

• 1/2″ Thermal Relief Valve

• 1/2″ Hex Nipple

• 1/2″ Brass Tee

• 1/2″ Male Pipe × Garden Hose Inlet

• 3/8″ Quick-Connect Plug

Product Details

Brand: CAT Pumps
OEM: Yes – Genuine CAT Pumps Components
Application: Pressure Regulation / Pump Protection / Plumbing Replacement
Unloader Type: EZ-Start, Pressure Regulating

Key Features

• Genuine OEM CAT Pumps KPL308 plumbing kit

• Designed for 5DX, 6DX & 66DX series pumps

• Includes PULSAR4KHPEZ EZ-Start unloader

• Complete, ready-to-install plumbing solution

• Reduces startup strain and improves system performance

• Proper bypass and thermal relief routing

• Eliminates mismatched fittings and installation guesswork

• Ideal for replacements, upgrades, or new installations