
- Enhanced Engine Performance: By delivering clean fuel at the correct pressures, this system helps improve throttle response, increase overall engine efficiency, and provide better overall performance.
- Reliable 4G Motor Design: This system integrates the same proven and reliable 4G motor that AirDog has successfully used for years, ensuring a dependable and long-lasting performance.
- Comprehensive Filtration: The AirDog operates in a multi-stage process, first removing large particulates and water with a water separator, then filtering out minute contaminants before finally separating and returning harmful air and vapor back to the tank.
- Complete Kit for Easy Installation: This system comes with everything you need for a straightforward installation, including all the necessary wiring, plumbing, mounting brackets, and hardware.
- Lifetime Limited Warranty: AirDog stands behind this product with a Limited Lifetime Warranty, giving you peace of mind that you're making a secure investment in your truck's future.

When you invest in a diesel truck, you're looking for a workhorse. But even the most powerful engine needs a constant supply of clean fuel to perform its best. The AirDog A4SPBD101 FP-100-4G Air/Fuel Separation System is the most cost-effective solution for protecting and upgrading the fuel system on your 1998.5-2004 Dodge 5.9L 24V Diesel (without an in-tank fuel pump). This system is meticulously engineered to address the critical issues that can compromise your engine's performance and longevity. By removing water, particulates, vapor, and entrained air, the AirDog ensures your engine receives only the purest fuel, preventing common problems like injector pitting and tip erosion that can lead to costly repairs and a significant loss in power.
Enhanced Engine Performance: By delivering clean fuel at the correct pressures, this system helps improve throttle response, increase overall engine efficiency, and provide better overall performance.
Reliable 4G Motor Design: This system integrates the same proven and reliable 4G motor that AirDog has successfully used for years, ensuring a dependable and long-lasting performance.
Comprehensive Filtr[...]
- Enhanced Engine Performance: By delivering clean fuel at the correct pressures, this system helps improve throttle response, increase overall engine efficiency, and provide better overall performance.
- Reliable 4G Motor Design: This system integrates the same proven and reliable 4G motor that AirDog has successfully used for years, ensuring a dependable and long-lasting performance.
- Comprehensive Filtration: The AirDog operates in a multi-stage process, first removing large particulates and water with a water separator, then filtering out minute contaminants before finally separating and returning harmful air and vapor back to the tank.
- Complete Kit for Easy Installation: This system comes with everything you need for a straightforward installation, including all the necessary wiring, plumbing, mounting brackets, and hardware.
- Lifetime Limited Warranty: AirDog stands behind this product with a Limited Lifetime Warranty, giving you peace of mind that you're making a secure investment in your truck's future.