SKU: 42-90004 | UPC: 802959420553
aFe Power DFS780 Fuel System Sight Glass Clear 2007.5-2018 Ram 2500/3500 6.7L Cummins
The aFe Power DFS780 Fuel System Sight Glass Clear provides a direct replacement high-impact polycarbonate window for the DFS780 fuel filtration system on 2007.5-2018 Ram 2500 and 3500 trucks equipped with 6.7L Cummins diesel engines. This clear sight glass delivers constant visual access to fuel levels and condition without disassembly. Viton seals maintain tight compatibility with diesel and biodiesel fuels for reliable operation in heavy-duty applications.
Key Features
- High-Impact Polycarbonate Construction: Resists cracks and impacts while offering crystal-clear visibility into the fuel chamber for quick status checks.
- O.E. Quality Viton Seals: Two included O-rings ensure leak-proof performance and long-term sealing against diesel and biodiesel fuels.
- Direct Bolt-On Replacement: Matches exact specifications for DFS780 fuel system sight glass with no modifications required.
- Fuel Inspection Capability: Allows drivers to monitor fuel quality and volume at a glance to prevent issues during towing or daily use.
- Lightweight Design: Weighs only 0.1 lbs to maintain fuel system balance without added stress on components.
Product Notes
- Inspect sight glass regularly for fuel clarity during maintenance intervals.
- Use only compatible diesel fuels to preserve seal integrity.
- Special order item ships within 1-2 business days via ground carrier.
Installation Notes
- Professional installation recommended.
- Drain fuel system before replacement to avoid spills.
- Uses existing DFS780 mounting hardware for 15-minute install.
This Part Fits
| Year | Make | Model | Submodel |
|---|---|---|---|
| 2007.5-2009 | Ram | 2500 Pickup | 6.7L Cummins Diesel |
| 2007.5-2009 | Ram | 3500 Pickup | 6.7L Cummins Diesel |
| 2007.5-2009 | Ram | 3500 Cab & Chassis | 6.7L Cummins Diesel |
| 2010-2018 | Ram | 2500 Pickup | ST/LT/Laramie 6.7L Cummins Diesel |
| 2010-2018 | Ram | 3500 Pickup | ST/LT/Laramie 6.7L Cummins Diesel |
| 2010-2018 | Ram | 3500 Cab & Chassis | 6.7L Cummins Diesel |
| 2013-2018 | Ram | 4500/5500 Cab & Chassis | 6.7L Cummins Diesel |
Why Choose aFe Power?
- Backed by decades of diesel performance engineering expertise.
- Uses premium materials tested for heavy-duty Cummins applications.
- Designed and manufactured in the USA for precise fit and function.
Frequently Asked Questions
- Q: Will this fit my 2015 Ram 3500 Cummins?
A: Yes it directly replaces the DFS780 sight glass on all 2007.5-2018 Ram HD trucks with 6.7L Cummins diesel including 2500 3500 pickup and cab chassis models. - Q: What material is the sight glass made from?
A: High-impact polycarbonate provides shatter resistance and optical clarity superior to plastic alternatives for repeated fuel checks. - Q: Is installation difficult or covered by warranty?
A: Bolt-on install takes under 30 minutes with basic tools. Covered by aFe Power limited lifetime warranty against defects.
Shipping & Handling
- Method: UPS Ground or FedEx Ground
- Availability: In stock – ships same or next business day
- Packaging: Compact protective box 6 x 4 x 2 inches
- Weight: 0.1 lbs product 0.3 lbs shipping
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