The Wacker Neuson Cover Seal Check Valve 8in is a genuine OEM component designed for the APT8S and APT8T series water pumps. As a direct Wacker Neuson OEM part, the is manufactured to the same specification as the original, ensuring a correct fit against the check valve housing with no guesswork on sealing geometry or material grade. This part covers the full APT8S and APT8T lineup, including skid-mounted, surge brake, electric brake, and cold weather variants.
Key Features
- OEM-Grade Sealing Material — Manufactured by Wacker Neuson to original compression and material specifications, so the cover seal maintains a consistent, leak-free barrier at the check valve.
- Drop-In Check Valve Fitment — Engineered to match the exact cover profile of the 8-inch check valve assembly, seating correctly without trimming or adjustment.
- Broad APT8 Series Coverage — Fits the full APT8S and APT8T range, including skid, surge brake, electric brake, and cold weather pump configurations.
- Protects Pump Flow Direction — A correctly sealed check valve cover prevents backflow and pressure bleed-back, keeping the pump primed and delivering consistent output on site.
- Genuine OEM Part — Sourced directly from Wacker Neuson, so the part number, fit, and material grade match what came off the production line — no substitution uncertainty.
The cover seal on a check valve forms a pressure-tight barrier that keeps the valve assembly closed to backflow when the pump is not actively pushing fluid. On an 8-inch water pump like the APT8S and APT8T, the check valve prevents water from draining back through the pump body between strokes or after shutdown, helping the unit maintain prime and build pressure efficiently. When this seal deteriorates or fails, the pump can lose prime, deliver inconsistent flow, or require repeated repriming — all signs that the cover seal needs to be replaced.
Part Details
| Part Number | 5100041351 |
|---|---|
| Brand | Wacker Neuson |
| Part Type | Genuine OEM |
| Description | Cover Seal Check Valve 8in |
Compatibility & Fitment
| Name | Model | Machine Number |
|---|---|---|
| APT8S Pump w/Skid | APT8S | 5200018987 |
| APT8T Pump, Surge Brake | APT8T | 5200019648, 5200019649 |
| APT8T Pump, Surge Brake, Cold Weather | APT8T CW | 5200019796, 5200019797 |
| APT8S Pump w/Skid, Cold Weather | APT8S CW | 5200019800 |
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.
