Product Description
Upgrade your 1989–1993 Cummins 5.9L 12V with the AirDog II-5G DF-100 (100 GPH) air/fuel separation system. This frame-mounted lift pump removes entrained air/vapor and water, stabilizes fuel pressure to the VE-44 injection pump, and improves throttle response, idle quality, and injector life — without hacking the factory fuel filter housing.
Vehicle Fitment
- 1989, 1990, 1991, 1992, 1993 Dodge/Ram with 5.9L 12-Valve Cummins (VE-44 rotary pump)
- Fuel flow: DF-100-5G (100 GPH) – ideal for stock to mildly modified trucks
Why Choose AirDog II-5G
- Modern gerotor pump with integrated adjustable regulator and multi-stage filtration
- Air/Vapor return to tank via filler-neck tee for consistent, clean fuel supply
- Complete, application-specific install kit with brackets, lines, and fittings
- Made in the USA
What’s Included
- AirDog II-5G DF-100 assembly with mount cradle
- Frame sandwich-plate bracket system and hardware
- Pre-filter (water separator) and 2-micron final filter
- Vehicle-specific quick-connect lines/fittings, wiring harness, filler-neck return tee
- Detailed installation instructions (see links below)
Cross-Reference / Alternatives (Airdog only)
- AIRDOG A7SABD540 II-5G DF-165-5G (1989–1993 Cummins 12V) – higher-flow 165 GPH
- AIRDOG A4SPBD136 FP-100-4G (1989–1993 Cummins 12V) – 4G series alternative
- AIRDOG A7SPBD252 II-5G DF-100-5G (1994–1998 Cummins 12V) – for next-gen 12V applications
Recommended Maintenance (Airdog filters)
Installation Resources
- Install Manual: AirDog II-5G DF-100/DF-165 for 1989–1993 Cummins (PDF)
- All Airdog Installation Resources
Helpful Notes
- DF-100-5G is perfect for stock fuel systems; step up to DF-165-5G for higher HP goals.
- Mount on the inside of the frame when possible; route lines away from heat and moving parts.
FAQ
Will this work with my factory fuel filter housing?
Yes—pressure supply is routed directly to the injection pump, bypassing the OE housing and block-mounted lift pump, while maintaining proper return plumbing.
What fuel pressure should I expect at the VE pump?
The application is factory-preset around the low-teens PSI and is adjustable for fine-tuning. Always verify with a quality gauge after installation.
Do I need to drop the tank?
No. DF-100 systems draw through the factory suction fitting. DF-165 uses a high-flow suction tube (included in that kit).
How often should I change filters?
Follow your environment and fuel quality, but a common interval is every 10–15k miles (or sooner with contamination). Keep FF100-2 and WS100 on hand.
Specifications for airdog A7SPBD338
| Attribute | Value |
|---|---|
| Brand / Part # | AirDog II-5G / A7SPBD338 (DF-100-5G) |
| UPC | 813094015382 |
| GTIN | 00813094015382 |
| Flow Rate | 100 GPH (DF-100-5G) |
| Vehicle Fitment | 1989–1993 Dodge/Ram 5.9L 12V Cummins (VE-44) |
| Dimensions (WxHxD) | 13.50" × 7.00" × 13.00" |
| Shipping | Free Shipping (typical ship weight ~27 lb) |
| Country of Origin | USA |
| Prop 65 | This product can expose you to chemicals known to the State of California to cause cancer and birth defects or other reproductive harm. Learn more. |
