The Wacker Neuson Crankcase is a genuine OEM crankcase designed for a wide range of Wacker Neuson walk-behind concrete trowels and PT3A series trash pumps. As a direct OEM replacement, it is manufactured to the same specifications as the original component, ensuring proper fit and function across compatible CT36, CT48, and PT3A equipment. This part covers an extensive fitment range including CT36-8A, CT36-8A-V, CT48-8A, CT36AGP, CT36AGT, CT36AVP, CT36AVT, CT48ADP, CT48ADT, and PT3A models. Sourcing part number directly keeps your repair straightforward and your machine back in service faster.
Key Features
- Genuine OEM Casting Integrity — Manufactured to original Wacker Neuson tolerances, with wall thickness and bore geometry matched to the engine design — critical for maintaining correct oil retention and bearing alignment in this crankcase application.
- Drop-In Engine Housing Replacement — Matches the original mounting bolt pattern, gasket mating surfaces, and port locations, allowing straightforward installation without machining or modification to mating components.
- Broad CT and PT Series Compatibility — Fits CT36 and CT48 walk-behind concrete power trowels across multiple configurations, as well as PT3A centrifugal trash pumps, making it a versatile stock item for multi-machine fleets.
- Supports Correct Engine Oil Sealing — A structurally sound crankcase maintains the sealed environment the crankshaft and bearings depend on; a cracked or worn crankcase leads to oil loss, contamination ingestion, and accelerated internal engine wear.
- Verified Part Number Cross-Reference — OEM part number 5100000581 is confirmed against multiple Wacker Neuson machine serial number ranges, reducing the risk of ordering errors on a high-cost engine component.
The crankcase is the structural foundation of the engine — it houses the crankshaft, supports the bearings, and forms the sealed lower half of the engine assembly. It also serves as the reservoir and retention structure for engine oil, keeping lubricant in contact with moving parts under load. When a crankcase cracks, warps, or develops a breach at a gasket surface, the engine loses oil pressure, allows contaminants into the bottom end, and can suffer rapid bearing or crankshaft failure. Replacing a damaged crankcase with a correctly spec'd OEM unit restores the engine's structural integrity and protects all downstream internal components.
Part Details
| Part Number | 5100000581 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Crankcase |
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 |
| 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 |
| HPG50A | HPG50A | 5000009509 |
| BPU 3750Ats | BPU 3750Ats | 5000610408 |
| BPU3750Ats | BPU 3750Ats US | 5000610423 |
| Gasoline Reversible Vibratory Plate | BPU 3050 | 5000008955 |
| BPU 4045A US | BPU 4045A US | 5100009663, 5000610403 |
| Reversible Plates | MPU 29A | 5000630244 |
| Vibratory plate BPU 4045A | BPU 4045A | 5000610345 |
| Vibratory Truss Screed, Power Section | HPG100 | 5000008293 |
| Vibratory Truss Screed, Power Section | HPG50 | 5000008294 |
| Vibration Plate | BPU3050A CN | 5100039661 |
| GP3800A | GP3800A | 5100041978 |
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.
