The Multiquip 8941578850 is a genuine OEM Oil Filter Plug Gasket DCA-45USJ 4JG1 designed for the DCA-45USJ ultra-silent diesel generator. As a direct OEM component, this gasket is manufactured to the same exacting specifications as the original part it replaces, ensuring a correct, leak-free seal at the oil filter plug. Sourced directly through Multiquip's authorized parts network, the part is the correct part for DCA-45USJ machines equipped with the Isuzu 4JG1 engine. Keeping this gasket in good condition is essential to maintaining proper oil system integrity during routine filter service intervals.
Key Features
- OEM Sealing Material: — Manufactured to the same compression and material grade as the original, ensuring a consistent, oil-tight seal at the filter plug interface.
- Exact-Fit Installation: — Matches the original plug diameter and seating profile on the Isuzu 4JG1 engine, dropping in without rework during filter service.
- Confirmed Fitment for DCA-45USJ: — Verified for use on the Multiquip DCA-45USJ ultra-silent diesel generator with the Isuzu 4JG1 engine platform.
- Protects Engine Lubrication System: — A properly seated plug gasket prevents oil seepage around the filter port, helping maintain correct oil pressure and protecting internal engine components.
- Fuel System Safety at Service Points: — Replacing this gasket during every filter service prevents slow oil leaks that can go unnoticed and create fire or slipping hazards on the generator deck.
The oil filter plug gasket forms a compression seal between the filter drain plug and the engine block port on the Isuzu 4JG1 engine. Its job is to prevent engine oil from escaping around the plug during normal operation and after filter service. When this gasket becomes compressed, cracked, or worn, it can allow slow oil weepage that contaminates the generator enclosure, reduces oil level over time, and may mask a developing lubrication issue — making it a small but critical part to inspect and replace at every oil filter change.
Part Details
| Part Number | 8941578850 |
|---|---|
| Brand | Multiquip |
| Part Type | Genuine OEM |
| Description | Oil Filter Plug Gasket DCA-45USJ 4JG1 |
Compatibility & Fitment
| Name | Model |
|---|---|
| DCA-45USJ | DCA-45USJ |
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.
Multiquip
Multiquip 8941678860 Fuel Filter Plug Gasket DCA-45USJ 4JG1
