Description
The Cummins Onan 122-0836 Oil Filter is a genuine Green Label OEM replacement part designed for select Cummins Onan RV QG and Marquis generator applications. It helps capture dirt, metal particles, and other contaminants circulating through the engine lubrication system. With an integrated bypass valve, this oil filter supports oil flow during cold starts and when the filtration media becomes restricted.
Choose this genuine Cummins Onan replacement filter for routine generator maintenance, while always verifying compatibility with your exact generator model and specification.
Cummins Onan 122-0836 Oil Filter Features
The Cummins Onan 122-0836 Oil Filter supports effective engine oil filtration and dependable lubrication in compatible generator applications.
Key features include:
- Genuine OEM part: Cummins Onan Green Label replacement oil filter.
- Contaminant filtration: Helps capture dirt, metal particles, and other contaminants from circulating engine oil.
- Integrated bypass valve: Supports oil flow during cold starts or when the filter becomes restricted.
- Engine lubrication support: Helps maintain oil circulation under varying operating conditions.
- Routine maintenance: Suitable for preventive maintenance on compatible generator engines.
- Single-filter package: Includes one genuine Cummins Onan oil filter.
The bypass valve is an important design feature. It supports oil flow when cold-start conditions or restricted filtration media make normal passage through the filter more difficult. This helps reduce the risk of oil starvation while supporting engine lubrication.
Compatible Generator Models and Series
The Cummins Onan 122-0836 Oil Filter is listed for the following generator models and applications:
- HGJAA: Specification A–K
- HGJAB: Specification A–K
- HGJAC: Specification A–K
- Select Marquis Gold generators
- Select Marquis Platinum QG EFI generators
- Select RV QG 5500 generators
- Select RV QG 7000 generators
Compatibility depends on the specific generator application. Not every generator within a named series is necessarily compatible.
Before ordering, check your generator’s complete model number, serial number, and specification letter against the applicable parts information. If you are unsure whether this Onan 122-0836 filter fits your equipment, confirm the correct part number before purchasing.
OEM Oil Filter Specifications
Review the product details below to confirm that this is the replacement part you need.
| Specification | Details |
|---|---|
| Brand | Cummins Onan |
| Part numbers | 122-0836, 0122-0836 |
| SKU | 3682744038289 |
| Product type | Genuine OEM generator oil filter |
| Condition | New |
| Package quantity | 1 |
| Approximate weight | 0.627 lb |
| Filter design | Integrated bypass valve |
| Engine oil included | No |
| Filter wrench included | No |
This genuine Cummins Onan Green Label filter is supplied as one oil filter. Engine oil and a filter wrench must be obtained separately if required for your maintenance procedure.
Installation and Maintenance Guidelines
Correct installation helps support effective filtration and dependable engine lubrication. Always consult the operator’s manual for your specific generator before beginning maintenance.
Follow these general preparation and installation steps:
- Confirm compatibility. Check the complete generator model number, serial number, and specification letter before installing the replacement filter.
- Prepare the generator. Follow the manufacturer’s safety instructions and shutdown procedure before performing maintenance.
- Remove the old filter. Use the appropriate method and tools specified in the operator’s manual.
- Check the old gasket. Confirm that the old filter gasket has been removed from the mounting surface.
- Clean the mounting surface. Remove residue as directed by the manufacturer to prepare the surface for the replacement filter.
- Lubricate the new gasket. Apply a light coating of clean engine oil to the new filter gasket.
- Install the replacement filter. Follow the tightening instructions in the generator’s operator’s manual.
- Check for leaks. After running the generator according to the manufacturer’s instructions, inspect the filter mounting area for oil leaks.
Do not substitute a generic tightening value for the instructions provided for your particular generator. Proper fitment and installation are important parts of routine RV generator maintenance.
Why Choose a Genuine Cummins Onan Replacement Filter?
Using the correct replacement part helps you maintain your generator according to its intended service requirements. The Cummins Onan 122-0836 Oil Filter is identified as a genuine OEM Green Label part for select compatible applications.
Its filtration function helps capture contaminants in the engine oil, while the integrated bypass valve supports oil flow during cold starts or when the filtration media becomes restricted. These features support routine maintenance and engine lubrication.
When purchasing a replacement, match the listed part numbers and generator specifications rather than relying on the generator brand alone. This is especially important when checking compatibility across HGJAA, HGJAB, HGJAC, Marquis, and RV QG generator applications.
Frequently Asked Questions
1. Which generators use the Cummins Onan 122-0836 Oil Filter?
This filter is listed for HGJAA, HGJAB, and HGJAC generators with specifications A–K, as well as select Marquis Gold, Marquis Platinum QG EFI, RV QG 5500, and RV QG 7000 generators. Confirm your complete model number, serial number, and specification letter before ordering.
2. Does the Onan 122-0836 filter have a bypass valve?
Yes. The filter incorporates a bypass valve that supports oil flow during cold starts or if the filtration media becomes restricted. This helps reduce the risk of oil starvation and supports dependable engine lubrication.
3. Does the Cummins Onan 122-0836 Oil Filter include engine oil or a filter wrench?
No. The package includes one genuine Cummins Onan 122-0836 oil filter only. Engine oil and a filter wrench are not included and must be purchased separately if needed.
Order Your Cummins Onan Oil Filter
Keep your compatible RV generator maintenance on track with the genuine Cummins Onan 122-0836 Oil Filter. Verify your generator’s model, serial number, and specification letter before ordering to help ensure the correct fit. Order today when you have confirmed compatibility with your generator.




