Product Description
AirDog A7SABC512 II-5G DF-220-5G is our highest-flow 5G fuel/air separation system for the 2001–2010 GM Duramax 6.6L. It delivers 220 GPH with an adjustable, boost-referenced diaphragm regulator for rock-steady supply pressure under towing, racing, and big-power builds. The kit mounts to the frame with the included sandwich-plate bracket, feeds the factory injection pump, and returns separated air/vapor to the tank for consistent rail pressure and injector life.
Vehicle Fitment
- 2001–2004 GM 6.6L Duramax LB7
- 2004.5–2005 GM 6.6L Duramax LLY
- 2006–2007 GM 6.6L Duramax LBZ
- 2007.5–2010 GM 6.6L Duramax LMM
Why Choose II-5G DF-220-5G?
- 220 GPH for heavily modified trucks
- Diaphragm-style, boost-referenceable regulator (fine-tune for performance)
- High-efficiency air/water separation with clean fuel delivery
- Quick-connect plumbing and frame-rail mount for a clean install
- Designed specifically for Duramax platforms that lack a factory lift pump
Cross-Reference / Related Airdog Products (CPP Diesel)
- AIRDOG A7SABC509 II-5G DF-165-5G (2001–2010 Duramax)
- AIRDOG A7SPBC259 II-5G DF-100-5G (2001–2010 Duramax)
- AIRDOG A4SPBC188 FP-150-4G (2001–2010 Duramax)
- AIRDOG A4SPBC185 FP-100-4G (2001–2010 Duramax)
Installation Instructions
- Airdog Resource Library (all manuals)
- AirDog II-5G DF-220 (2001–2010 Duramax) – Install Manual (latest)
Frequently Asked Questions
How much power will DF-220-5G support?
With 220 GPH and adjustable pressure, this system is aimed at high-performance builds with large injectors/turbo and aggressive tuning. For mid-level builds, see DF-165-5G or DF-100-5G above.
Is the regulator boost-referenced and adjustable?
Yes. The II-5G uses a diaphragm-style regulator that can be boost-referenced and adjusted to suit your setup.
Do I have to drop the tank?
No. The kit includes a frame-mount bracket and uses a return-to-tank design with supplied plumbing per the install manual.
What filters does it use and how often should I service them?
The II-5G uses a water separator and 2-micron filter. Inspect regularly and service per the manual and your fuel quality/usage.
Specifications for airdog A7SABC512
| Brand | Airdog (PureFlow) |
| Part Number | A7SABC512 (II-5G DF-220-5G) |
| UPC | 813094010127 |
| GTIN | 00813094010127 |
| Flow Rate | 220 GPH |
| Vehicle Compatibility | 2001–2010 GM 6.6L Duramax (LB7, LLY, LBZ, LMM) |
| Shipping | Free Shipping (contiguous U.S.) |
| Shipping Weight | 27.0 lb |
| Package Dimensions | 13.50 in (W) × 7.00 in (H) × 13.00 in (D) |
| Country of Origin | Not specified |
| Prop 65 Warning | Cancer and Reproductive Harm |
