Dewalt DCE400D2 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit, (2) 2AH

The DEWALT DCE400D2 is a cordless PEX Type-A expander built for consistent, even expansions from 3/8″ to 1″. Running on the 20V MAX lithium-ion platform, this kit pairs a compact, brushless expander with (2) 2.0Ah batteries to keep installers working through rough-ins, service calls, and change-outs. An automatic rotating head evens out each expansion, helping fittings seat properly and reducing rework. Full-trigger actuation makes one-handed operation straightforward in tight spaces, while a bright onboard LED keeps the expansion head and sleeve in view inside cabinets, attics, and crawlspaces. With rubber overmold for a secure grip, dual-sided belt and hang hooks for carry options, and compatibility with DEWALT PEX heads plus leading competitive heads, this cordless PEX tool streamlines everyday plumbing work without a cord or compressor.

Designed for mechanical and plumbing trades, the DCE400D2 supports reliable PEX Type-A connections on common service sizes. The kit box organizes the expander, heads, charger, and grease so crews can grab, go, and make repeatable expansions that bond well with expansion sleeves.

Dewalt 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit At a Glance

• 3/8″–1″ Capacity: Covers common PEX Type-A service and rough-in sizes.
• Automatic Rotating Head: Promotes even wall expansion for reliable sleeve fit.
• Brushless Motor: Efficient power delivery and reduced maintenance.
• Full-Trigger Actuation: Simple one-handed use in cramped areas.
• Bright LED Work Light: Improves visibility in low-light locations.
• Dual Hooks (Belt & Hang): Flexible carry and staging on ladders or rails.
• Head Compatibility: Uses DEWALT heads; works with Milwaukee® and Uponor® heads.
• 20V MAX Platform: Shares batteries/chargers across DEWALT 20V MAX tools.

Markets

• Residential and Commercial Plumbing: Reliable PEX Type-A expansions for rough-ins and repipes.
• Mechanical/Hydronic Heating: Fast connections on manifolds and home-run systems.
• Remodeling and Service: Cordless operation for tight, finished spaces and quick repairs.
• Facility Maintenance: Consistent results for in-house work in schools, hospitals, and offices.
• Municipal Housing and Utilities: Field-friendly tool for maintenance where power access is limited.
• Trade Schools and Apprenticeships: Helps students learn proper expansion technique and timing.

Plumbers and mechanical contractors save time with a cordless PEX expander that produces even expansions and clean sleeve seating. In overhead or under-sink work, the compact body, full-trigger actuation, and LED reduce awkward hand positions and improve accuracy. Shops benefit from head compatibility across brands, so crews can keep using Milwaukee® or Uponor® heads already on the truck. With two 2.0Ah batteries and a charger in the kit, teams can cycle packs and stay productive during long punch-list days without hauling a corded station.

Dewalt DCE400D2 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit, (2) 2AH Features

• Expands 3/8 in. – 1 in. Pex Type-A tubing
• Automatic rotating head action for even expansion
• Full trigger actuation for use in tight spaces
• Bright LED work light to help illuminate dark areas
• Dual-sided hang and belt hooks for convenient storage
• Rubber overmold for comfortable, ergonomic grip
• Uses DEWALT® PEX Heads. Compatible with Milwaukee® and Uponor® Heads. (Milwaukee® is a registered trademark of Milwaukee Electric Tool Corp. Uponor® is a registered trademark of Uponor Oyj.)

Dewalt DCE400D2 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit, (2) 2AH Includes

• (2) DCB203 Batteries
• (1) Charger
• (3) Expander Heads (1/2 in, 3/4 in, 1 in)
• (1) PEX Expander Grease
• (1) Kit Box
• (1) DCE400 PEX Expander

Dewalt DCE400D2 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit, (2) 2AH Specifications

• Tool Capacity: Expands PEX Type-A from 3/8″ to 1″
• Motor: Brushless
• Compatible Pipe Material: PEX Type-A
• Battery Platform: 20V MAX Lithium-Ion
• Number of Pieces: (11)
• Tool Weight: 3.9 lb (approx.)
• Assembled Dimensions: 18.06″ (L) × 4.88″ (W) × 12.63″ (H)
• Assembled Weight: 11.8 lb (kit)
• Packaged Dimensions: 18″ (L) × 5″ (W) × 13″ (H)
• Packaged Weight: 12.35 lb
• Work Light: LED
• Hooks: Dual-sided belt/hang
• Head Compatibility: DEWALT, Milwaukee®, Uponor®
• Power Type: Battery

Dewalt DCE400D2 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit, (2) 2AH Warranty

• Dewalts Guaranteed Tough 90 Day Money Back Guarantee, 1 Year Free Service, 3 Year Limited Warranty

Why Tradespeople Choose the Dewalt 20V MAX Brushless 3/8″-1″ PEX Expansion Tool Kit

Installers choose this cordless PEX expander for consistent, even enlargements that seat expansion sleeves quickly. The automatic rotating head helps PEX Type-A recover uniformly, so connections with 1/2″, 3/4″, and 1″ fittings go together smoothly with less rework. On service calls, the 20V MAX platform keeps the PEX expansion tool lightweight and ready without a cord, and the LED makes alignment easier behind sinks and inside mechanical rooms. Crews with mixed fleets value head compatibility—using existing Milwaukee or Uponor heads alongside DEWALT heads—so the tool fits right into current kits. For everyday rough-ins and change-outs, it delivers the repeatable results technicians need to keep timelines predictable.