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VHP Series Four xCooled Cylinder Head

Built to Work
VHP Series Four xCooled Cylinder Head

  • Availability
  • Life

Experience increased uptime, reliability, and extended lifecycle intervals with INNIO’s VHP* xCooled cylinder head upgrade.

Offering enhanced cylinder head cooling by improving the flow of coolant to critical cylinder head components, the xCooled head has shown proven field-tested results operating at sites with high LHV fuels. The xCooled cylinder head is offered as a direct replacement for existing Series Four* GSI cylinder heads, aligning well with top-end and bottom-end overhauls.

VHP Series 4  xCooled Cylinder Head

Make sure this upgrade is compatible with your engine:

What can this upgrade do for you?

  • Improved reliability when operating on high BTU fuels. Enhanced cooling at the exhaust valve and guide reduces component temperatures up to 40%, lowering thermodynamic stresses in critical components.
  • Extended intervals lead to more time between overhauls, which increases uptime and reduces operating cost. Up to 33% longer intervals between top-end overhauls; 32,000** hours on an L7044GSI engine operating up to 1,680 BHP @ 1,200 RPM continuously.

**Intervals may vary depending on factors such as fuel quality, maintenance practices, and operating conditions. Engine

configuration must be verified for upgrade opportunity.

VHP Series 2 to xCooled Conversion - 1

How we get you there?


Previous Series Four

Cylinder Head

xCooled Cylinder Head



L7042GSI S4










1Requires SPARC update for spark plug sleeve extension by also ordering qty. 1 of 214302C and qty. 2 of 211830 per cylinder.
When ordering the xCooled cylinder head through the reUp program, existing Series Four cylinder heads in reusable condition can be returned for full core credit as per the reUp core credit guidelines.

  • 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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