Description
Product Overview
High-quality replacement oil filter for Cummins Onan RV generators including QG 5500, QG 7000, Marquis Gold, and HGJAA/HGJAB series. Features premium cellulose/synthetic blend filtration media trapping contaminants to 25 microns, silicone anti-drain back valve preventing dry starts, and thick-wall steel canister for RV generator compartment durability. Direct spin-on OEM replacement.
Key Features
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Premium Filtration Media — High-efficiency cellulose/synthetic blend traps contaminants while maintaining oil flow for sustained generator operation.
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Direct OEM Replacement — Replaces Cummins Onan 122-0836 — identical thread pitch, gasket diameter, and bypass valve settings.
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Silicone Anti-Drain Back Valve — Retains oil in the filter between runs, eliminating damaging “dry start” wear on generator startup.
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Heavy-Duty Canister — Thick-wall steel resists stone impacts, road debris, and constant vibration in RV generator compartments.
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Extended Protection — Designed for demanding RV generator conditions — sustained loads, vibration, and temperature extremes.
Compatibility
| Make |
Model |
Year Range |
Notes |
| Cummins Onan |
QG 5500 |
All Years |
HGJAA / HGJAB Series |
| Cummins Onan |
QG 7000 |
All Years |
HGJAA / HGJAB Series |
| Cummins Onan |
Marquis Gold 5500/7000 |
All Years |
HGJAA / HGJAB Series |
Specifications
| Specification |
Value |
| Part Number |
122-0836 (Replacement) |
| Thread |
Standard Spin-On |
| Filtration Media |
Cellulose / Synthetic Blend |
| Anti-Drain Back Valve |
Silicone |
| Micron Rating |
25 Micron Nominal |
Why Choose iFJF
RV generators run under heavy loads in harsh conditions. A quality oil filter is the first line of defense. Our 122-0836 replacement delivers OEM-equivalent protection at a better price — so you can stick to the 150-hour maintenance interval affordably.
Frequently Asked Questions
Q: How often change generator oil and filter?
A: Cummins Onan recommends every 150 hours or annually. Change every 100 hours in dusty conditions or with heavy use.
Q: Will this fit my Onan generator?
A: Fits QG 5500, QG 7000, Marquis Gold, and all HGJAA/HGJAB series using 122-0836 filter. Direct spin-on replacement.
Q: Is this OEM Cummins?
A: High-quality aftermarket replacement meeting OEM 122-0836 specs. Same performance — better value than dealer pricing.
Q: Why is an anti-drain back valve important?
A: Prevents oil draining from filter when generator is off, ensuring immediate pressure on startup and eliminating dry start wear.
Q: What oil should I use?
A: Cummins Onan recommends SAE 15W-40 diesel-rated oil for most generators. Check owner’s manual for your specific model.
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