The Wacker Neuson Air Filter Insert Complete is a genuine OEM air filtration component designed for CT36 and CT48 series walk-behind concrete power trowels and PT3A series centrifugal trash pumps. As a direct OEM replacement, this insert is manufactured to the same specification as the original part, ensuring correct fitment and consistent engine protection across the full range of compatible machines. Compatibility extends to multiple CT36 and CT48 variants — including variable-speed and CE-compliant configurations — as well as PT3A and PT3A(I) pump models. Keep part number on hand to avoid unnecessary engine service intervals on your trowels or pumps.
Key Features
- Genuine OEM Filtration Media — Manufactured to Wacker Neuson's original air filtration specification, delivering the same particulate capture efficiency as the filter your machine left the factory with.
- Drop-In Fitment for CT36 and CT48 Trowels — Designed to seat directly into the air filter housing on CT36 and CT48 series walk-behind concrete power trowels, including standard, variable-speed, and CE variants.
- PT3A Pump Compatibility — Also fits PT3A and PT3A(I) 75mm/3-inch centrifugal trash pumps, making this a versatile service stock item if you run both trowels and pumps on your fleet.
- Engine Protection Where It Counts — A clean, correctly rated air filter insert prevents abrasive dust and concrete particulate from entering the engine intake, preserving cylinder and valve train condition over the long term.
- Correct Service Interval Compliance — Using the genuine OEM insert ensures the air filtration system performs as engineered, supporting proper engine breathing and fuel-air ratio across the full operating range of the machine.
The air filter insert is the primary barrier between the engine's intake and the surrounding work environment. On concrete trowels and trash pumps operating in dusty or debris-laden conditions, the filter captures airborne particles before they can enter the combustion chamber. A clogged or degraded filter restricts airflow, causing the engine to run rich, lose power, and consume more fuel — while an absent or damaged insert allows abrasive particles to accelerate wear on piston rings and cylinder walls. Replacing the air filter insert at the correct service interval is one of the most cost-effective ways to extend engine life on any small-engine-powered equipment.
Part Details
| Part Number | 5000074737 |
|---|---|
| Old Part Number | 0074737 |
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Air Filter Insert Complete |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| CT36-8A-V | CT36-8A-V | 5000620832, 5000009442 |
| CT36-8A Trowel | CT36-8A | 5000009439, 5000620831 |
| CT48-8A Trowel | CT48-8A | 5000009449 |
| CT48-8A | CT48-8A EU | 5000620837 |
| 75mm/3in Centrifugal Trash Pum p | PT3A | 5000009098, 5000009101, 5000009240, 5000620800, 5000006729, 5000006730, 5100058535, 5100058536, 5100042216 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP | 5000007596, 5000007595 |
| 915mm/36in CE Walk-behind Trow el | CT36AGP-E | 5000008036, 5000008026 |
| 1220mm/48in Walk-behind Trowel | CT48ADP | 5000007598, 5000007599, 5000008199 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADP-E | 5000008027, 5000008028 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT-E | 5000007594, 5000008012 |
| 1220mm/48in CE Walk-behind Tro wel | CT48ADT-E | 5000007597, 5000008016 |
| 915mm/36in CE Walk-behind Trow el | CT36AGT | 5000008014, 5000008011 |
| 1220mm/48in Walk-behind Trowel | CT48ADT | 5000008015, 5000008040 |
| BPU 3050A | BPU 3050A | 5000008763 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVP | 5000009235, 5000009236 |
| HPG100A | HPG100A | 5000009507 |
| BPU 3050A US | BPU 3050A US | 5000610361 |
| 915mm/36in Variable Speed Walk #NAME? | CT36AVT | 5000009233, 5000009234 |
| Single Direction Vibratory Pla te, 25kN, 50cm/20in | BPS 2550A | 5000007528 |
| Reversible Vibratory Plate, 35 kN, 45cm/18in | BPU 3545A | 5000008783 |
| HPG50A | HPG50A | 5000009509 |
| BPU 3750Ats | BPU 3750Ats | 5000610408 |
| BPU3750Ats | BPU 3750Ats US | 5000610423 |
| Gasoline Floor Saw, Ø 350 | BFS 80 | 5000006654 |
| Reversible Plates | MPU 29A | 5000630244 |
| Vibration Plate BPU 2950A WSM | BPU 2950A | 5000007873, 5000007962 |
| Vibratory Truss Screed, Power Section | HPG100 | 5000008293 |
| Vibratory Truss Screed, Power Section | HPG50 | 5000008294 |
| PT3A(I) | PT3A(I) | 5100042614 |
| PDT3A | PDT3A | 5100075507 |
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.
