The Multiquip 2243687 Air Cleaner BF4L 1011F ST45 is a genuine OEM air cleaner designed for the ST45 swing-tube concrete pump. Sourced directly from Multiquip, this part is built to match the exact filtration and fit specifications of the original component on ST45 equipment. If you are servicing or restoring an ST45 concrete pump, using the correct OEM air cleaner ensures the Deutz BF4L 1011F engine receives properly filtered air at the correct flow rate. DHS Equipment supplies this part as a verified Multiquip OEM replacement, so you can order with confidence.
Key Features
- OEM Filtration Integrity — Engineered to the exact filtration media and housing specifications of the original unit, maintaining correct airflow and particle separation for the Deutz BF4L 1011F engine.
- Direct-Mount Replacement — Designed to mount directly to the BF4L 1011F engine intake on the ST45, matching original port dimensions and attachment points for a straightforward installation.
- Confirmed ST45 Fitment — Verified compatible with the Multiquip ST45 swing-tube concrete pump; check your model code before ordering to confirm applicability.
- Engine Protection at the Source — A properly functioning air cleaner prevents abrasive dust and debris from entering the engine during concrete pumping operations, where airborne particulate levels are consistently high.
- Genuine Multiquip OEM Part — Supplied as an authentic Multiquip component under part number 2243687, meeting the same standards as the part originally installed at the factory.
The air cleaner is the engine's first line of defense against airborne contaminants. On a diesel-powered concrete pump like the ST45, the engine operates in environments where cement dust, aggregate particles, and other fine debris are constantly present. The air cleaner filters incoming combustion air before it reaches the engine's intake, preventing premature wear on cylinders, pistons, and valves. When the air cleaner becomes clogged or fails, the engine is forced to run with restricted airflow or unfiltered air — both conditions accelerate internal wear and can lead to reduced power output or engine damage over time.
For assistance confirming this part fits your specific ST45 unit, contact the DHS Equipment team before placing your order.
Part Details
| Part Number | 2243687 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Air Cleaner BF4L 1011F ST45 |
Compatibility & Fitment
| Name | Model |
|---|---|
| ST45 | ST45 |
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.
