Product Description
Upgrade your 4th Gen 6.7L Cummins fuel system the right way with the FLEECE FPE-FFD-RF-4G 2010-2018 4TH GEN DODGE/CUMMINS FUEL DISTRIBUTION BLOCK. This billet aluminum block replaces the bulky factory fuel filter housing and gives you a clean, centralized place to route feeds, returns, and sensors—perfect for trucks running AirDog® or FASS® systems and dual CP3 pumps.
By mounting in the factory fuel filter location, this Fleece block lets you retain the OEM return lines while eliminating the restrictive stock filter head. Multiple AN feed and return ports plus dedicated sensor ports make plumbing your high-flow fuel system simple, tidy, and service-friendly.
- Direct bolt-in at the factory fuel filter location on 2010–2018 4th Gen Dodge/Ram 6.7L Cummins
- Ideal for aftermarket fuel systems such as AirDog® or FASS® and dual CP3 setups
- Billet aluminum construction with black anodized finish for strength and corrosion resistance
- Retains a port for the factory WIF (Water-In-Fuel) sensor for clean integration
- Multiple -8AN feed ports, -6AN return port, and 1/8" NPT sensor ports for maximum flexibility
Fitment – 2010–2018 4th Gen Dodge/Ram 6.7L Cummins
This fuel distribution block is designed for late-model 6.7L Ram trucks with performance fuel system upgrades.
- Engine: 6.7L Cummins Turbo Diesel
- Platform: 4th Gen Dodge/Ram 2500 & 3500
- Model Years: 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018
- Fuel System: Aftermarket lift pump (AirDog®, FASS®) and/or dual CP3 recommended
- Location: Installs in the OEM fuel filter location
Kit Contents
Per Fleece’s official kit breakdown, the FPE-FFD-RF-4G includes everything you need to plumb your feeds and returns.
- Fuel Distribution Block
- (4) New banjo sealing washers
- (1) WIF sensor port plug
- (2) 9/16-18 O-ring to -6AN male fittings (dual CP3 return ports)
- (3) 9/16-18 O-ring port plugs
- (3) 3/4-16 O-ring to -8AN male fittings (feed ports)
- (2) 3/4-16 O-ring port plugs
- (2) 1/8" NPT port plugs (sensor ports)
Cross-Reference / Recommended Fleece Upgrades (CPP Diesel Only)
- FLEECE FPE-FFD-RF-HF-KIT-4G 2010-2018 CUMMINS FUEL DISTRIBUTION BLOCK HOSE AND FITTING KIT – Hose and fitting kit designed specifically to work with the FPE-FFD-RF-4G block.
- FLEECE FPE-CRR-20-0806 2007.5-2018 CUMMINS REGULATED RETURN FUEL DISTRIBUTION BLOCK – Regulated return distribution block for full fuel system control.
- FLEECE FPE-34196 6.7L CUMMINS DUAL PUMP KIT JUNCTION BLOCK WITH RAIL SENSOR PORT 3.5MM ID – Junction block for dual pump kits with rail sensor port.
- FLEECE FPE-HFFL-1018 2010-2018 CUMMINS 0.5 INCH HIGH FLOW FEED LINE KIT (OEM FILTER TO CP3) – High-flow 1/2" feed line kit from OEM filter area to CP3.
- FLEECE FPE-CP3-FEED 1/2 INCH CP3 FEED FITTING – Stainless 1/2" CP3 feed fitting for big-line setups.
- FLEECE FPE-CP3-RTRN 3/8 INCH CP3 RETURN FITTING – CP3 return fitting to finish off your plumbing.
Specifications for FLEECE FPE-FFD-RF-4G
| Attribute | Value |
|---|---|
| Brand | Fleece Performance Engineering |
| Part Number | FPE-FFD-RF-4G |
| UPC | 635909311065 |
| GTIN (14) | 00635909311065 |
| Engine Compatibility | 2010–2018 Dodge/Ram 2500 & 3500 with 6.7L Cummins (4th Gen) |
| Material / Finish | Billet aluminum, black anodized |
| Mounting Location | Factory fuel filter location on frame rail |
| Ports / Threads | (1) WIF sensor port, (2) 9/16-18 O-ring ports for -6AN returns (dual CP3), (3) 3/4-16 O-ring ports for -8AN feeds, (2) 1/8" NPT sensor ports |
| Supported Configurations | Aftermarket lift pump (AirDog®/FASS®), dual CP3 systems, custom fuel plumbing |
| Shipping Weight (Approx.) | ~4 lb |
| Shipping Dimensions (Approx.) | 7 x 6 x 3 in (L x W x H) |
| Cross Reference / Related Fleece SKUs | FPE-FFD-RF-HF-KIT-4G; FPE-CRR-20-0806; FPE-34196; FPE-HFFL-1018; FPE-CP3-FEED; FPE-CP3-RTRN |
| E-codes / Emissions | Not emissions certified; for off-road/competition or where allowed by law |
| Country of Origin | USA (per common distributor listings) |
| Prop 65 Warning | WARNING: Cancer and Reproductive Harm – www.P65Warnings.ca.gov |
FAQ – FLEECE FPE-FFD-RF-4G FUEL DISTRIBUTION BLOCK
Why do I need a fuel distribution block on my 4th Gen Cummins?Once you add an aftermarket lift pump (AirDog® or FASS®) and especially dual CP3s, the factory fuel filter housing becomes a bottleneck and a plumbing nightmare. The FPE-FFD-RF-4G replaces that housing with a compact billet block that gives you proper feed, return, and sensor ports in one place, making your system easier to route, service, and expand.
Does this block eliminate my factory fuel filter?
Yes. This block is designed for builds using an external filtration system such as AirDog® or FASS®. The aftermarket system takes over filtration duties, while the Fleece block becomes the central hub for routing fuel feeds, returns, and sensors. If you are still relying solely on the OEM filter, you will want to keep the stock housing instead.
Is the FPE-FFD-RF-4G compatible with dual CP3 kits?
Absolutely. The block includes 9/16-18 O-ring ports and -6AN/-8AN fittings to make dual CP3 feed and return plumbing straightforward. Combine it with parts like the FLEECE FPE-FFD-RF-HF-KIT-4G, FPE-HFFL-1018, FPE-CP3-FEED, and FPE-CP3-RTRN to complete a clean, high-flow dual pump fuel system.
Can I keep the factory WIF (Water-In-Fuel) sensor?
Yes. The FPE-FFD-RF-4G includes a dedicated port for the factory WIF sensor so that you can retain that safety feature in your upgraded fuel system. A plug is also included if you choose not to run the WIF sensor.
Is any tuning required when installing this fuel distribution block?
The block itself does not require tuning—it simply changes how fuel is routed. However, if you are adding dual CP3s, larger injectors, or significant fueling upgrades at the same time, proper ECM calibration is highly recommended to keep rail pressure, drivability, and EGTs under control.
