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Miller Stick / Engine-Drive Support

Big Blue 400 PipePro

Pipeline-focused diesel engine-drive with Wireless Interface Control standard, downhill stick performance, MIG/FCAW support, and 400-amp output.

Stick (SMAW)MIG with wire feeder (GMAW)Flux-cored (FCAW)DC TIG (GTAW)RMDPulsed MIGAir carbon arc cutting and gouging (CAC-A) Heavy industrial pipeline engine-drive
Big Blue 400 PipePro machine image

Processes

Stick (SMAW), MIG with wire feeder (GMAW), Flux-cored (FCAW), DC TIG (GTAW), RMD, Pulsed MIG, Air carbon arc cutting and gouging (CAC-A)

Welding range

CC Stick/TIG: 20 - 400 A. CV MIG/FCAW: 14 - 40 V.

Engine

Mitsubishi S4L2 diesel, 24.7 hp at 1,800 rpm

Auxiliary power

Single-phase. Peak: 12,000 W. Continuous: 10,000 W.

Weight

993 lb. (450 kg)

Class

Heavy industrial pipeline engine-drive

Machine Packages

Stock numberCatalog package
907805001 Mitsubishi
907805 Mitsubishi with stainless steel

Compatible Accessories

Full KVA Adapter Cord

300517 Full KVA adapter cord listed for Bobcat, Trailblazer, and Big Blue engine-drive models.

View on Amazon

Full KVA Plug Kit

119172 Single-phase 120/240 V, 50 A plug kit listed for Bobcat, Trailblazer, and Big Blue models.

Buy link unavailable.

Protective Cover

195301 Protective cover for Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST.

View on Amazon

HWY-Mid Frame Trailer

Trailer path listed for Bobcat, Trailblazer, Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST.

Buy link unavailable.

Compatible Torches / Guns / Feeders

SuitCase Feeders

Voltage-sensing SuitCase or wire-feeder path listed for supported engine-drive machines.

Open support page

ArcReach Smart Feeder

Smart Feeder path for ArcReach-equipped models where catalog-listed.

Open support page

Miller Catalog Accessories

These accessories are placed here only when the Miller catalog names this machine, torch, feeder, or family path. Verify plug style, voltage, package, and serial-specific details before ordering.

PartAccessoryCatalog fitmentSource / path
951850 Remote Output Panel Kit For Big Blue models except Big Blue 450 Duo CST. Catalog p. 124
Open support path
301438 HWY-Mid Frame Trailer For Bobcat, Trailblazer, Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST. View on Amazon Catalog p. 125
Open support path
301338 HWY-225 Trailer For Big Blue models. Catalog p. 125
Open support path
Full machine details

Welding Output

  • 300 A at 32 V, 100% duty cycle
  • 350 A at 27 V, 100% duty cycle
  • 400 A at 24 V, 100% duty cycle

Key Support Notes

  • Wireless Interface Control standard
  • Pipeline/downhill stick arc characteristics
  • LINE-X cover
  • Compact size for truck space

Dimensions

H: 32 in. / 37 in. to top of exhaust, W: 26.25 in., D: 56 in.

Source: Miller Electric 2026 Full-line Catalog, catalog page 87, literature ED/5.10. Machine and accessory relationships are source-backed catalog references. Amazon purchase links stay separate and only appear after independent product verification.

Approved Buy Links

OEM-backed Amazon Links

Full KVA adapter cord listed for Bobcat, Trailblazer, and Big Blue engine-drive models. Part: 300517
View on Amazon
Protective cover for Big Blue 400 Pro, Big Blue 400 PipePro, and Big Blue 450 Duo CST. Part: 195301
View on Amazon