The Wacker Neuson Rear Duct Insulator is a genuine OEM component designed for the G25 and G50 series portable generators. Sourced directly through the Wacker Neuson parts network, this insulator meets the exact material and dimensional standards of the original factory-installed part. It fits a wide range of G25 and G50 configurations, including Standard, Cold Weather, Custom, Extended Run, Battlefield, and Tier 4 Final variants. Confirming your machine's model and serial number before ordering ensures a correct, hassle-free installation.
Key Features
- Thermal-Grade OEM Material — Manufactured to the same heat-resistant material specification as the original, maintaining effective duct insulation across the generator's operating temperature range.
- Drop-In Replacement — Matches the original mounting points and geometry of the rear duct assembly, allowing direct installation without cutting, trimming, or adaptation.
- Broad G25 and G50 Coverage — Compatible across Standard, Cold Weather, Custom, Extended Run, Tier 4i, Tier 4 Final, and 600V variants of the G25 and G50 generator families.
- Protects Generator Performance — A correctly seated duct insulator keeps exhaust heat directed away from sensitive enclosure components; a degraded or missing insulator can lead to heat buildup and accelerated wear of surrounding parts.
- Genuine Wacker Neuson OEM Part — Supplied as part number 5000164226 through the authorized Wacker Neuson parts channel, ensuring traceability and part number accuracy for fleet maintenance records.
The rear duct insulator wraps or lines the exhaust duct at the rear of the generator enclosure, acting as a thermal barrier between hot exhaust airflow and the surrounding structure. It prevents heat transfer to adjacent panels, wiring, and mechanical components that are not designed to withstand sustained high temperatures. When the insulator deteriorates, cracks, or is missing, concentrated heat can damage enclosure materials and nearby components over time, making timely replacement an important part of routine generator maintenance.
Part Details
| Part Number | 5000164226 |
|---|---|
| Old Part Number | 0164226 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Rear Duct Insulator |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| Mobile Generator, Custom | G25 | 5000620346, 5000620344, 5000620345, 5000620642, 5000009466, 5000620004, 5000620640, 5000620709, 5000620641, 5000009368, 5200005557, 5200003991, 5000620931, 5200001316, 5200009372, 5200009376, 5200009370, 5200009371, 5200009373, 5200009377, 5200014461, 5200009375, 5200009374, 5200014460, 5200014462, 5000621005, 5100041584, 5200022587, 5100045084, 5100041580, 5100041592, 5000620706, 5100017591, 5100022834, 5100041581, 5100041582, 5100041583, 5100045541, 5100045542, 5100050326, 5100042507, 5100042510, 5100042512, 5100042509, 5100025836, 5100042508 |
| G50 Generator, Custom T4F | G50 | 5200014322, 5200014319, 5200014320, 5200014323, 5200022589, 5100042434, 5100042430, 5100042435, 5100045494, 5100042431, 5100042433, 5100045085, 5100045493, 5100042432 |
Verify Before You Order
Fitment is machine-number and revision-specific; always confirm your model and serial number against the fitment list.
Why Buy From DHS Equipment
Every part is verified against the manufacturer's part number before it ships, so what you order is what arrives. We carry parts from leading OEM brands and our own DHS Quality Parts line of professional aftermarket components. Need help finding the right part? Our team is available to confirm compatibility whenever you need it. Orders are processed fast to keep your jobs on track. We don't just sell parts. We keep you jobsite ready.
Questions? Contact our team at [email protected] or 866-611-9369 — DHS Equipment is here to help you maintain peak performance.
