OEM Delphi / GM Return-Style Fuel Rail Assembly
Genuine used Delphi fuel rail assembly, GM part number 12574002, for select Chevrolet and GMC trucks and SUVs equipped with the matching return-style fuel system.
Designed for select 1999-2004 GM 4.8L, 5.3L, and 6.0L V8 applications, including:
- 4.8L LR4
- 5.3L LM7
- 6.0L LQ4
- 6.0L LQ9
Common Applications
Common applications include select:
- Chevrolet Silverado
- Chevrolet Tahoe
- Chevrolet Suburban
- GMC Sierra
- GMC Yukon
- GMC Yukon XL
This is the RETURN-STYLE fuel rail.
GM used different fuel-system configurations depending on year, engine, and vehicle application. Please compare your original fuel rail, fuel-line connections, fittings, and part number with the photos before purchasing.
Part Number
GM / Delphi Part Number: 12574002
Reference / interchange number:
25166925
What's Included
You will receive one complete fuel rail assembly, including:
- Left and right fuel rail sections
- Crossover tube
- Some injector retaining clips
- Existing attached fittings shown
A complete set of injector retaining clips is not guaranteed.
Not Included
- Fuel injectors
- Fuel pressure regulator
- Additional retaining clips
- Any other parts not pictured or specifically listed
Multiple Quantity / Representative Photos
This is a multiple-quantity listing. Both available units are the same part number and configuration, but the exact individual rail you receive may not be the exact one shown in the photos.
The photos intentionally show one of the more cosmetically worn examples so you have a realistic idea of the condition to expect.
The rail you receive will be the same 12574002 return-style configuration and will be in comparable or better overall condition.
Normal differences between units may or staining
FadingLabel conditionMolded markingsNumber and location of remaining injector retaining clipsEach rail will be visually inspected before shipment for obvious cracks or significant physical damage.
Shipping Note
For safer packaging and to reduce the chance of damage during shipping, one side of the crossover tube will be disconnected before shipment.
This is intentional and the crossover connection will need to be reassembled during installation.
Installation Recommendation
Because this is a used fuel-system component, I recommend replacing all applicable O-rings, seals, and gaskets before installation.
This includes seals at the:
- Injector seats
- Crossover connection
- Fuel pressure regulator area
- Fuel-line connections as applicable
Replacing old seals is good practice anytime a used fuel-system component is installed.
Condition
Used OEM part with normal wear from age and previous use.
Fuel has been drained from the rail. Normal underhood cosmetic wear should be expected.
It only comes with what is pictured/represented in this listing.
Item specificsFieldEnterBrandDelphiTypeFuel RailOE/OEM Part Number12574002Manufacturer Part Number12574002Interchange Part Number25166925Fuel TypeGasolineFuel SystemReturn StyleEngine Size4.8L, 5.3L, 6.0LEngine CodesLR4, LM7, LQ4, LQ9MaterialComposite / PlasticColorBlackPlacement on VehicleEngine CompartmentUniversal FitmentNoPerformance PartNoVintage PartYesCountry of OriginUnited StatesItems IncludedFuel Rail Assembly, Crossover Tube, Some Retaining Clips
