Key Takeaways:
- Comprehensive Support – MCGILL Industries provides support beyond just supplying genuine OEM parts like Heinzmann/Waukesha fuel mixers
- Lower-maintenance durability – The Venturi-based gas mixer’s design eliminates wear-prone components, reducing unplanned downtime in biogas applications
- Fuel-agnostic precision – Consistently maintains optimal air-fuel ratios even with digester gas
- Scalable power – Supports everything from compact 35kW cogeneration units to 2 MW industrial powerhouses
- OEM-backed – As the original manufacturer for Waukesha engines’ genuine 59032P mixer, Heinzmann delivers factory-calibrated performance trusted in 1,500+ landfill gas installations worldwide
At MCGILL, we support industrial engines operating on challenging fuels like digester gas, landfill gas, and other low-calorific gases. While these fuels often present some challenges, they also power some of our most sustainable energy systems. The difference between smooth operation and costly downtime often comes down to one critical component: the gas mixer. Waukesha engines use one of the most capable designs in the field, engineered by Heinzmann, a globally respected OEM.
We recently supplied a Heinzmann gas mixer for a customer who is running engines on digester gas. To better understand why this gas mixer is a great match for this application, let’s take a deep dive into its particular features.
Proven Technology Behind a Genuine Waukesha Part
The Waukesha part number 59032P is a specialized gas mixer, and supplied under Waukesha’s genuine parts program. The highly-respected original equipment manufacturer (OEM) brand behind this mixer delivers a robust and precise solution for mixing gas and air—especially in biogas and low-BTU fuel applications. This mixer is the mechanical equivalent of a Michelin-starred chef–consistently balancing flavors (or in this case, methane and air) with uncanny precision.
Why This Waukesha Engine Gas Mixer Stands Out:
- Low-Maintenance Design – No moving parts means reduced wear and fewer failures – and the mixer’s smooth internal contours prevent debris accumulation
- Venturi-Based Mixing – The Heinzmann gas mixer’s Venturi insert uses Bernoulli’s principle to automatically meter gas flow with minimal pressure drop
- Broad Fuel Compatibility – Designed for stable combustion using natural gas, landfill gas, propane, and corrosive or low-calorific fuels
- Flexible Integration – Works in naturally aspirated or turbocharged engines; configurable for draw-through or blow-through setups
- OEM-Backed Performance – The same core design is trusted by leading engine manufacturers, including Waukesha engines, and the 59032P’s ±0.01mm tolerances ensure perfect Venturi profiles.
- High Power Range – Suitable for everything from 35 kW cogeneration units to over 2,000 kW industrial powerhouses, using the same robust mixing technology all around
Application Spotlight: Digester Gas

As a heavy equipment parts supplier, MCGILL recently supplied this mixer (under Waukesha part number 59032P) to support a customer operating engines on digester gas. This fuel type presents unique challenges due to fluctuating energy content and gas quality, but the mixer performed flawlessly — delivering a stable air-fuel ratio and supporting reliable operation for Waukesha engines or other engines.
This real-world example vividly demonstrates the fuel mixer’s capability to overcome significant fuel quality variations.
The MCGILL Difference: More Than Parts
Sourcing Heinzmann-Waukesha mixers and other genuine OEM heavy equipment parts is just the start. Whether you’re running lean-burn systems, operating in harsh environments, or using specialty fuels, we work with you to ensure you get the right part for the job — every time. MCGILL adds value with:
- Deep product knowledge and responsive support – Our team focuses on high-value, technically demanding applications.
- Logistics and sourcing expertise – Using a wide, well-established network of suppliers, our team gets parts – whether Waukesha engine parts or something else – to our clients fast.
- Lifecycle support – From initial sizing to retrofit engineering, we’re there. Because even the best mixer can’t compensate for undersized piping or faulty pressure regulators.
Your Next Move: Precision Meets Performance
In biogas operations, the gas mixer isn’t just a component – it’s vital to profitability. Choose the wrong one, and you’re stuck in a cycle of emergency shutdowns and costly repairs. Choose high-quality heavy equipment parts, like the Heinzmann gas mixer, and you unlock:
- Increased uptime in even the dirtiest gas streams
- Improved fuel efficiency gains from optimal combustion
- Reduced maintenance and increased energy output for Waukesha engines.
MCGILL Industries delivers more than parts. We deliver solutions hardened in the world’s toughest energy environments. With on-time delivery, you get the right mixer, precisely when promised.
Need a critical Waukesha part like 59032P for your engine?
Contact our parts specialists and request a quote today to discuss your application. Let’s turn your problematic digester gas into a reliable revenue stream, one perfectly mixed cubic foot at a time. Because in the renewable energy game, precision isn’t optional. It’s profit.
