








AFE DFS780 PRO Fuel System (Full Time Operation) 17-19 GM 6.6L Duramax L5P
This product is vehicle-specific. Select your year, make, model, engine and transmission to confirm compatibility before adding it to your cart.
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Ships directly from the supplier. The final shipping cost will be shown before payment.
- Ships from aFe Power
Ensure your L5P Duramax is getting the cleanest, most consistent fuel delivery possible by upgrading with a DFS780 PRO Fuel Pump. This system will not only remove sediment and debris, but also water and air that reduces the overall efficiency of your engine.
This kit from AFE will include all of the necessary components to upgrade your engine for increased power, fuel economy, and even reliability.
Billet 6061-T6 Aluminum Manifold: Eliminates porosity concerns with cast aluminum.
Contoured CNC Machining Of Manifold Passages: Enhances flow through the manifold to reduce pressure drop due to flow restrictions.
Universal Carbon Steel Mounting Bracket: Heavy duty bracket easily mounts with supplied hardware.
"Marine Grade" Motor: Protected against dust intrusion and powerful water jets.
Helical Bronze Spur Gears: Bronze gears more forgiving of contaminants than steel gears. The Helical spur gear design runs quieter than straight cut gears.
Plug and Play Installation: Supplied harness attaches directly to battery and utilizes Deutsch weather-proof connectors. No cutting or modifications of the stock fuel lines required. Vehicle can easily be returned to stock.
O.E Quality Viton Seals: Compatible with diesel and biodiesel fuels.
Ensure your L5P Duramax is getting the cleanest, most consistent fuel delivery possible by upgrading with a DFS780 PRO Fuel Pump. This system will not only remove sediment and debris, but also water and air that reduces the overall efficiency of your engine.
This kit from AFE will include all of the necessary components to upgrade your engine for increased power, fuel economy, and even reliability.
Billet 6061-T6 Aluminum Manifold: Eliminates porosity concerns with cast aluminum.
Contoured CNC Machining Of Manifold Passages: Enhances flow through the manifold to reduce pressure drop due to flow restrictions.
Universal Carbon Steel Mounting Bracket: Heavy duty bracket easily mounts with supplied hardware.
"Marine Grade" Motor: Protected against dust intrusion and powerful water jets.
Helical Bronze Spur Gears: Bronze gears more forgiving of contaminants than steel gears. The Helical spur gear design runs quieter than straight cut gears.
Plug and Play Installation: Supplied harness attaches directly to battery and utilizes Deutsch weather-proof connectors. No cutting or modifications of the stock fuel lines required. Vehicle can easily be returned to stock.
O.E Quality Viton Seals: Compatible with diesel and biodiesel fuels.
Diesel Power Products directs warranty claims to the respective manufacturer; coverage and duration depend on that manufacturer and product. Its one-year manufacturer-defect warranty applies only to products manufactured by Power Products Unlimited Inc., not all products it sells. Manufacturer inspection is required; DPP does not pay inspection/return shipping or labor.
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Diesel Power Products warranty policyView complete warrantyProduct conditions
Return and warranty information is based on what Diesel Power Products offers. Product-specific eligibility and the supplier’s published conditions apply; FullSpecDiesel does not add or extend coverage.
Professional installation is recommended.
- Return eligibility
- Diesel Power Products states a 30-day window from receipt for eligible new, uninstalled, unopened and complete items in original packaging, with prior approval/RMA. Custom tuners and specified opened tools are excluded. Customer pays return shipping; original outbound shipping, including initially free shipping, is deducted. No standard restocking percentage is stated for ordinary approved returns. Based on what Diesel Power Products offers.
- Return window
- Not stated for this product; see supplier terms
- Restocking fee
- See supplier terms; no product-specific fee stated
- Return shipping
- Based on the supplier’s return policy; see terms
- Made to order
- No
- Backorder status
- Not backordered
- Cancellation
- Subject to supplier terms; contact FullSpecDiesel before requesting cancellation
- Warranty provider
- Diesel Power Products
- Warranty duration
- Product-specific duration not stated; see supplier terms
- Compatibility
- Listed for specific vehicle configurations
- Legal use
- Street legal
- Processing estimate
- 3–7 business days supplier processing
- Shipping
- Shipping calculated at checkout
- Signature
- No signature requirement
- Supplier
- Diesel Power Products
Product compatibility is based on the vehicle and product information provided. Review your selected truck, product options, measurements, modifications, and installation requirements before ordering.