AIRDOG R4SBC138 RP-4G-100 RAPTOR FUEL PUMP FOR 2015–2016 GM DURAMAX 6.6L LML

The AirDog® Raptor-4G RP-100 (Part # R4SBC138) is a 100 GPH frame-mounted lift pump engineered specifically for the 2015–2016 GM 6.6L Duramax LML. It mounts to the frame bracket in front of the tank, draws from the factory suction fitting, and feeds the CP4 injection pump with a steady supply of clean, de-aerated fuel—reducing cavitation and helping injector and pump longevity. Internally regulated design (no return line required) for a clean, reliable install.

Vehicle Fitment

• 2015 Chevrolet Silverado 2500HD/3500HD — 6.6L Duramax LML
• 2016 Chevrolet Silverado 2500HD/3500HD — 6.6L Duramax LML
• 2015 GMC Sierra 2500HD/3500HD — 6.6L Duramax LML
• 2016 GMC Sierra 2500HD/3500HD — 6.6L Duramax LML

Cross-Reference / Related AirDog Products (CPP Diesel)

• AIRDOG R4SBC139 RP-4G-150 (2015–2016 LML)
• AIRDOG R4SBC133 RP-4G-100 (2001–2010 LB7/LLY/LBZ)
• AIRDOG A4SPBC190 FP-100-4G (2015–2016 LML)
• AIRDOG A4SPBC191 FP-150-4G (2015–2016 LML)
• AIRDOG A7SPBC262 II-5G DF-100-5G (2015–2016 LML)
• AIRDOG A4SPBC186 FP-100-4G (2011–2014 LML)

Installation Instructions

• Raptor-4G 100/150 — 2015–2016 Duramax Install Manual (PDF)
• PureFlow AirDog Resource Library (latest manuals)

FAQ

Is 100 GPH enough for a stock or mildly tuned LML?
Yes—RP-4G-100 supports stock fuel demand and typical street tunes. If you plan for higher power, consider the RP-4G-150 (R4SBC139) or II-5G options listed above.

Do I need a return line?
No. This Raptor-4G pump is internally regulated and does not require a return line.

Where does it mount and how does it plumb in?
It mounts on the frame bracket forward of the tank, draws fuel from the factory module suction port, and feeds the CP4 on the frame feed line.

What maintenance is required?
Replace the spin-on fuel and water separator filters per the intervals in the install manual (adjust for fuel quality and duty cycle).

Specifications for airdog R4SBC138