FITMENT
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2013-2018 6.7L Dodge Ram Cummins 2500 Turbo Diesel.
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2013-2018 6.7L Dodge Ram Cummins 3500 Turbo Diesel.
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2013-2018 6.7L Dodge Ram Cummins 4500 Turbo Diesel.
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2013-2018 6.7L Dodge Ram Cummins 5500 Turbo Diesel.
OEM Cross-Reference
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68197867AA, 68197867AB, FS20089, BF46031, P551833, PS11937, WF10112.
DESCRIPTION
Product Overview
- Protect your high-pressure common-rail injection system from its two greatest enemies: water and abrasive debris. Engineered specifically for the primary, frame-rail mounted position next to the fuel tank, this premium Chassis-Mounted Fuel/Water Separator serves as your engine's first and most crucial line of defense.
- Constructed with a heavy-duty steel canister and reinforced internal supports, this filter is built to withstand extreme under-chassis fuel pressures and road debris without cracking or leaking. The advanced multi-layer filtration media efficiently strips up to 98% of emulsified water and traps coarse particulates from diesel fuel before it ever travels to the engine bay.
Key Features
- Features a melt-blown micro-fiber media with a 5µm outer layer and 3µm inner stage to capture contaminants at two separate size thresholds for layered engine protection.
- Built with a rugged steel canister and reinforced threads to easily withstand harsh road debris, salt spray, and constant under-chassis vibration.
- Strips up to 98% of emulsified water from diesel fuel—the single most critical defense for preserving the life of your high-pressure common-rail injectors.
- Engineered with a precision-threaded bottom port that seamlessly accepts your factory Water-in-Fuel (WIF) sensor for an easy transfer without modification.
- Positioned on the frame rail as the primary filter stage, it handles the heaviest filtration lifting so your secondary engine-bay filter lasts longer.
Replacement Interval
- Replace the filter every 15,000 miles or 12 months (whichever comes first), and ensure you drain accumulated water at every oil change or immediately if the dashboard WIF (Water-in-Fuel) warning light illuminates.
FAQ
Q: Why did Ram add this frame-rail filter for 2013 models?
A:To protect high-pressure common-rail injection systems, Ram upgraded to a dual-filter layout for 2013. Placing the primary filter on the frame rail, closer to the tank, allowed for a larger element with greater water-separation and dirt-holding capacities. This primary stage strips water and coarse debris, leaving the engine-bay filter to perform final, fine-filtration—greatly extending injector lifespan compared to older single-filter designs.
Q: How do I properly drain the water from this separator?
A: Locate the filter canister under the driver-side frame rail. Place a drain pan directly beneath the unit. Carefully loosen the drain valve integrated into the bottom Water-in-Fuel (WIF) sensor assembly to let the accumulated water and fuel run out. Once clean fuel begins to flow, tighten the valve securely. Cycle your truck's ignition key to the RUN position (without starting) three times for 10 seconds each to prime the system, then start the engine and inspect for leaks.
Q: What’s the difference between this and the engine-bay fuel filter?
A: The chassis filter (68197867AA) is your primary defense; it does the heavy lifting by separating water and blocking large particles. The engine-bay filter (68157291AA) is the secondary stage, capturing microscopic contaminants down to a finer rating. Skipping the chassis filter change overloads the secondary engine filter with water and sediment, which quickly ruins your common-rail fuel system.
Q: Will this filter work if I have converted my truck’s injection pump?
A: Yes. This filter is designed for 2013–2018 Ram trucks, which originally shipped with the highly reliable Bosch CP3 high-pressure fuel pump. If you are running a standard CP3 setup or have installed an aftermarket CP3 conversion on a newer model, this filter meets or exceeds the flow and filtration specifications required to keep the pump protected. (Note: 2019–2024 trucks use a completely different chassis filter housing and are not physically compatible with this steel canister).
Q: Is there a complete fuel service kit with both filters?
A: Yes — the chassis and engine-bay fuel filters share the same interval on 2013-2018 trucks, so running just one is a half-done job. Our Dual Fuel Filter Kit bundles both in one order, and you can step up to the 3-Filter Kit with oil for a complete engine bay refresh.
2013-2018 Ram 6.7L Cummins 5-Filter Maintenance Kit Buyer’s Guide (OEM 68197867AA / 68157291AA / 5083285AA)
