OE Quality
60-Day Returns

Standard Ignition EOS16 Engine Oil Separator
Engine Oil Separator for GM HD Trucks
Standard Ignition EOS16 is an engine oil separator for select Chevrolet Silverado 2500 HD and Silverado 3500 HD, as well as GMC Sierra 2500 HD and Sierra 3500 HD applications. It is built with a black finish, includes gaskets, and uses no connector design for a direct service replacement.
Key Features
- Engine oil separator for cylinder block component service
- Black finish for a clean OE-style appearance
- Gaskets included for sealing at installation
- No connector gender design
- Inlet diameter: 0.04 in. (1.016 mm)
- Outlet diameter: 0.07 in. (1.778 mm)
- Standard Ignition EOS16 replacement part number
Detailed Description
Standard Ignition EOS16 is a replacement engine oil separator for GM heavy-duty trucks that need a serviceable cylinder block component. It is listed for 2017-2024 Chevrolet Silverado 2500 HD and Silverado 3500 HD, plus 2017-2024 GMC Sierra 2500 HD and Sierra 3500 HD applications. The included gaskets support proper sealing during replacement, while the compact inlet and outlet dimensions match the specified service configuration. This part cross-references OE-style part numbers 12682569 and EOS116 for the same application. Standard Ignition EOS16 is a practical choice when servicing oil separation issues on Silverado 2500 HD, Silverado 3500 HD, Sierra 2500 HD, and Sierra 3500 HD trucks.
What It Helps Fix
- Oil vapor separation concerns in the engine ventilation path
- Sealing issues at the separator mounting point
- Replacement needs for a worn or damaged separator assembly
- Service work on GM HD truck cylinder block components
- Fitment-specific repair on Silverado and Sierra diesel or gas engine applications
Installation Notes
Verify the vehicle year, make, model, and engine configuration before installation. Confirm the separator connection style and gasket surfaces are clean and undamaged. Match the inlet and outlet orientation to the original part and follow the factory service procedure for removal and reassembly. Standard Ignition EOS16 is listed for 2017-2024 Chevrolet Silverado 2500 HD and Silverado 3500 HD, and 2017-2024 GMC Sierra 2500 HD and Sierra 3500 HD.
Quality Assurance
Standard Ignition replacement parts are cataloged for application-specific service on GM heavy-duty trucks. EOS16 is identified by part number EOS16 and is supported by OE-style interchange references for direct-fit selection.
| Brand | Standard Ignition |
|---|---|
| Part Number | EOS16 |
| Color/Finish | Black |
| Connector Gender | No connector |
| Gaskets Included | Yes |
| Inlet Diameter (in) | 0.04 |
| Inlet Diameter (mm) | 1.016 |
| Outlet Diameter (in) | 0.07 |
| Outlet Diameter (mm) | 1.778 |
This part fits 32 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2024 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2024 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2024 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2024 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2023 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2023 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2023 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2023 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2022 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2022 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2022 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2022 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2021 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2021 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2021 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2021 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2020 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2020 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2020 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2020 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2019 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2019 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2019 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2019 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2018 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2018 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2018 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2018 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2017 | Chevrolet | Silverado 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2017 | Chevrolet | Silverado 3500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2017 | GMC | Sierra 2500 HD | 6.6L | V8 | DIESEL | N/A | |
| 2017 | GMC | Sierra 3500 HD | 6.6L | V8 | DIESEL | N/A |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.