Multiquip M3453300303 Left Duct

The Multiquip M3453300303 Left Duct is a genuine OEM component designed for DCA-series ultra-silent diesel generators, including the DCA125SSJU, DCA125SSJU2, DCA100SSJU, DCA125SSJU2-FEMA, and DCA125SSJU-GEER. As a direct OEM replacement, this left duct is built to the exact specifications of the original part, ensuring a correct installation without guesswork. Sourced directly from Multiquip, it is the same component installed on these units at the factory, making it the most reliable choice when the original duct needs replacement.

Key Features

• Genuine OEM Construction — Manufactured to the exact material and dimensional specs of the original, ensuring the duct maintains its intended airflow geometry within the enclosure.
• Direct Drop-In Replacement — Engineered to align with the existing mounting points and surrounding panels on DCA-series generators, so installation follows the original assembly sequence.
• Broad DCA-Series Compatibility — Confirmed fitment for DCA125SSJU, DCA125SSJU2, DCA100SSJU, DCA125SSJU2-FEMA, and DCA125SSJU-GEER ultra-silent generator models.
• Enclosure Airflow Integrity — A correctly fitted duct channels cooling and exhaust airflow through the designed path inside the enclosure, helping the engine and alternator maintain safe operating temperatures under continuous load.
• Long-Term Enclosure Performance — Replacing a cracked, damaged, or missing duct restores the acoustic and thermal management the ultra-silent enclosure was engineered to deliver.

The left duct is an internal airflow management component housed within the generator's ultra-silent enclosure. It directs the flow of cooling air across critical components — including the engine and alternator — along a controlled path so heat is efficiently exhausted rather than allowed to accumulate inside the cabinet. When this duct is cracked, misaligned, or missing entirely, airflow becomes uneven, which can cause the generator to run hotter than intended and may accelerate wear on surrounding components. Replacing it with the correct OEM part restores the enclosure's designed thermal and acoustic performance.

Part Details

Compatibility & Fitment

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.