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P9394GSI S4 ESM to P9394GSI S5 ESM2

Built to Work
P9394GSI S4 ESM to P9394GSI S5 ESM2

  • Availability
  • Efficiency
  • Emissions
  • Flexibility
  • Life
  • Output

Experience new controls, increased performance, uptime, and reliability by upgrading your Waukesha* VHP* 9394 Series Four* engine with the latest Series Five* technology.

An upgrade to Series Five gives you ESM2 with a full-color touch screen display panel which allows users to see all engine parameters, trend data, view manuals/service bulletins, and walk through troubleshooting steps, eliminating the need for a laptop computer.

VHP X-Cooled Head

Make sure this upgrade is compatible with your engine:

What can this upgrade do for you?

Up to 11% Increase in power from 2250 BHP to 2500 BHP gives additional horsepower and flow in turn additional revenue. xCooled cylinder head upgrade offers an enhanced cylinder head design with proven results in field-tested conditions operating on high LHV fuels. The Series Five Piston, Ring, and Liners along with a larger centrifugal oil filter extends oil life intervals from 2000 to 4000 hours – Up to 100% longer oil change life. This upgrade package aligns well with top-end and bottom-end overhauls.

How we get you there?

The following items are included in the upgrade to Series Five:

  • ESM2 including:
    • HMI display –Engine control unit (ECU)
    • New sensors and harnesses
    • AFR2 air/fuel ratio control
    • IPMD2 ignition module
    • Power distribution box
    • ESM2 mounting hardware
  • xCooled Cylinder Heads
  • Series Five Piston/Ring/Liner
  • Centrifugal oil filter

Customer benefits

  • ESM2 HMI allows on engine operating perameters and simple diagnostic and troubleshooting features
  • IPMD2 with new spark plug allows for up to 4,000 hour spark plug life
  • xCooled cylinder heads optimize cooling & exhaust flow ports for improved reliability
  • Series Five piston allows for up to 4,000 hour oil change intervals

Find your version:


Part #


VHP P9394GSI engines with ESM


Series Five ESM2 Upgrade Kit



PRL Series Five


DA205002H or NWC-DA205002H

xCooled Cylinder Head



Centrifugal Oil Filter

  • Waukesha Engine Upgrades

    We offer retrofit solutions that improve reliability, availability, maintainability, performance, durability, emissions, usability, and flexibility of your existing Waukesha engines.

  • reUp Remanfactured Engines & Parts

    To increase performance, reUp remanufactured core parts program for Jenbacher* and Waukesha* gas engines delivers genuine OEM parts that meet exacting standards and specifictions at a fraction of the cost of new core parts.

  • Find Solutions, Parts, and Service

    Waukesha’s growing network of distributors, packagers and technicians provide end users with the freedom to choose the right partner to service equipment and provide ongoing support – all backed by Waukesha Engine’s commitment to service and support.

  • Certified & Customer-Focused Training

    In-person and virtual training courses and programs are designed to make it easier for both first-time operators and experienced technicians to assimilate knowledge quickly and improve engine productivity long-term.

Built to Work


with enhanced reliability, availability and efficiency.


with extended service intervals and comprehensive engine upgrades.


with enhanced controls and performance improvements through data analytics.


At Waukesha, we’re working every day to design and build engines and programs that help power your tomorrow.



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