GZJoSum 42" Grease Gun Hose Extension 1/8" NPT for 20V MAX Cordless — 10,000 psi, Flexible with Coupler

The GZJoSum DCGG5703-42 is a 42-inch, 1/8" NPT replacement grease gun hose assembly designed to restore reach and reliability to compatible 20V MAX cordless grease guns.

This replacement hose kit delivers a long, flexible extension that lets you access tight fittings and recessed grease points without modifying the tool. Built to withstand up to 10,000 psi working pressure and engineered for common cordless and hand-pump grease guns, the assembly includes a coupler and matches the DCGG570B/DCGG571 series and related part numbers so you can swap it in quickly.

How does this hose improve access to hard-to-reach grease fittings?

The 42-inch flexible design gives you additional length to reach recessed or awkwardly positioned zerks without stretching or disassembling surrounding components. Flexibility keeps the hose from kinking while you maneuver around engine bays, agricultural fittings, and industrial joints.

• 42" length for extended reach into confined spaces
• Flexible construction resists kinks and preserves flow
• 1/8" bore maintains consistent grease delivery
• Coupler included for quick attachment and removal

Will this hose fit my 20V MAX cordless grease gun model?

This assembly is made for the DCGG5703-42 family of hoses and is compatible with several 20V MAX grease gun models and related part numbers. Confirm your tool’s thread and connector type (1/8" NPT) to ensure direct compatibility before purchase.

• Compatible with DCGG570B Type 1 and DCGG570K Type 1
• Works with DCGG571B Type 1 and DCGG571M1 Type 1
• Also compatible with models listed as N365752 and DCGG5703-42
• Standard 1/8" NPT threading for broad fitment

How durable is the hose under regular shop and field use?

The hose is constructed from high-quality, reinforced materials to resist abrasion, joint flex, and repeated coupling cycles. Rated for up to 10,000 psi working pressure, it is suitable for heavy-duty greasing tasks while remaining compact and sturdy for storage.

• 10,000 psi maximum working pressure rating
• Premium materials that resist wear and tearing
• Designed to withstand repeated flexing and connection cycles
• Compact profile for durable storage in tool bags or boxes

What is included and how simple is installation?

The kit ships as a ready-to-mount replacement hose assembly with a preinstalled coupler so you can swap it onto compatible grease guns in minutes. No special tools are required for most standard 1/8" NPT threaded connections, and the hose’s flexible design makes alignment and handling straightforward.

• 1 x 42" replacement grease gun hose assembly
• Preinstalled coupler for quick connection
• 1/8" bore and NPT thread for standard fitment
• Plug-and-play replacement for compatible models

Who is this for: The GZJoSum DCGG5703-42 hose kit is ideal for mechanics, fleet technicians, agricultural operators, and DIYers who need reliable extended reach for greasing hard-to-access fittings. Choose this hose if you own a compatible 20V MAX cordless or hand-pump grease gun and want a durable, high-pressure extension that simplifies maintenance without complex installation.