2019-2026 3.0L Duramax Drop-In Fuel System Adapter Kit (LZ0ADPT1001)

This is the application adapter kit that lets the FASS Drop-In Series Fuel System be installed on the 3.0L Duramax. FASS builds one Drop-In housing for the Duramax platform and pairs it with a vehicle-specific adapter kit, so the adapter is what makes the system bolt into a 1500-series truck or SUV rather than a 6.6L HD truck.

Choose 1500 Truck for Silverado 1500 and Sierra 1500 pickups in any cab and box configuration, or 1500 SUV for Tahoe, Suburban, Yukon, Yukon XL, Escalade and Escalade ESV.

The Drop-In Series itself is an air separation and filtration system, not a lift pump. It replaces the plastic OEM single filter housing with a CNC machined 6061-T6 billet aluminum dual filter housing, retains the factory in-tank lift pump, and keeps the OEM water separator element so the water-in-fuel sensor continues to warn you before water reaches the clean side of the filter.

*This adapter kit is not a complete fuel system on its own. It must be installed together with the FASS Drop-In Series Fuel System (DIFSL5P2001), which is sold separately.

Part Number: LZ0ADPT1001 (1500 Truck) / LZ0ADPT2001 (1500 SUV)

• Adapts the FASS Drop-In Series Fuel System to the 3.0L Duramax LM2 and LZ0
• Application specific: separate kits for 1500-series pickups and 1500-series SUVs
• 100% drop-in installation, no drilling or permanent modification required
• Retains the factory in-tank lift pump
• Retains the OEM water separator element and the factory water-in-fuel sensor function
• Covered by the FASS limited lifetime warranty on the Drop-In Series when registered

• Requires the FASS Drop-In Series Fuel System, sold separately. The complete installation is DIFSL5P2001 plus this adapter kit. See the 2020-2025 Duramax Drop-In Diesel Fuel System (DIFSL5P2001).
• 1500 Truck (LZ0ADPT1001) covers 2019-2026 pickups: LM2 2019-2022 and LZ0 2023-2026.
• 1500 SUV (LZ0ADPT2001) covers 2021-2026 SUVs: LM2 2021-2024 and LZ0 2025-2026.
• Drop-In fuel systems are plug and play filtration upgrades and are not compatible with fuel sump kits.
• This is a filtration and air separation system, not a lift pump. The OEM in-tank fuel pump is retained.