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Air and Fuel› Fuel Pumps, Regulators and Components

AirDog

FP-150 Fuel Air Separation System

Name: FP-150 Fuel Air Separation System
Brand: AirDog
SKU: A4SPBD004

$736.23

SKU: A4SPBD004

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$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

The AirDog FP-150 is a fuel air separation system designed for 1998.5-2004 Dodge Cummins diesel pickups. It effectively removes water, particulates, vapor, and entrained air from diesel fuel, replacing the factory lift pump and filter system. The compact, single-piece pump body design mounts directly to the frame rail with no drilling required.

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The AirDog FP-150 (A4SPBD004) is a comprehensive fuel air separation system engineered to optimize the performance and longevity of 1998.5-2004 Dodge Cummins diesel engines. This system replaces the stock lift pump and filter, actively removing contaminants like water, particulates, vapor, and entrained air from the diesel fuel before it reaches the injection pump. By ensuring pure diesel fuel delivery, the AirDog FP-150 contributes to longer injector and injection pump life, leading to significant operational cost savings. Its compact dimensions (7"L x 10"T x 3.2"W) and frame-rail mounting system simplify installation, eliminating the need for drilling. The system boasts a high flow rate of 150 GPH, ensuring adequate fuel delivery for high-performance applications and improved throttle response. This AirDog fuel system is specifically designed for the 1998.5-2004 Dodge Ram 2500 and 3500 models equipped with the 5.9L Cummins engine, compatible with both VP44 and early CP3 injection pumps. The air/vapor is returned to the tank via a filler neck tee, and a 1/2" draw straw is used to pull fuel from the tank. Optimal engine performance, increased fuel economy, and enhanced torque output are key benefits cited for this advanced fuel filtration and separation system.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

Brand	AirDog
Part Number	A4SPBD004
Category	Air and Fuel

Videos

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NEW PRODUCT RELEASE - What's new for 2023?

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

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