The Multiquip D4374100103 Air Cleaner Hose is a genuine OEM component designed for DLW330X2 and DLW400ESA4 series diesel light welders. As a direct OEM replacement, this hose meets the original engineering specifications set by Multiquip, ensuring a proper seal and correct airflow path from the air cleaner assembly to the engine intake. Sourced through authorized Multiquip supply channels, D4374100103 is the correct part for keeping your diesel light welder running as designed.
Key Features
- OEM-Grade Material Construction — Manufactured to Multiquip's original hose diameter, wall thickness, and flexibility specifications, maintaining the airtight connection the air induction system depends on.
- Drop-In Replacement — Matches the original routing, end fittings, and clamp positions, allowing the hose to seat and secure without reworking the surrounding components.
- Confirmed Fitment — Verified for use on Multiquip DLW330X2 and DLW400ESA4 diesel light welders.
- Protects Engine Air Supply — A properly seated air cleaner hose prevents unfiltered air from bypassing the filter element, protecting the engine from premature wear caused by dust and debris ingestion.
- Fuel Efficiency and Output Stability — A leak-free intake path ensures the correct air-to-fuel ratio is maintained, supporting consistent welding output and stable engine performance under load.
The air cleaner hose connects the air filter housing to the engine's intake, channeling filtered air into the combustion system. It acts as a sealed conduit that keeps the airflow path clean and unobstructed — any crack, collapse, or loose connection in this hose allows unfiltered air to enter the engine, accelerating internal wear and disrupting the air-fuel mixture. On a diesel light welder like the DLW330X2 or DLW400ESA4, where stable engine output directly affects welding arc quality, a compromised air cleaner hose can cause rough running, increased fuel consumption, and long-term engine damage.
For questions about part D4374100103 or to confirm fitment for your specific machine, contact the DHS Equipment parts team for assistance.
Part Details
| Part Number | D4374100103 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Air Cleaner Hose |
Compatibility & Fitment
| Name | Model |
|---|---|
| Welders | DLW330X2 |
| Welders | DLW400ESA4 |
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.
