MSD's Atomic EFI billet fuel rails complement the look of the Atomic AirForce intake manifold while delivering the flow capacity needed for high-horsepower applications. Machined with a 5/8" diameter fuel passage, they're finished in a bright-dip, black-anodized coating with laser-etched logos.
Specifications:
- Category: Air and Fuel Delivery
- Type: Fuel Injector Rail
- Fitment: LS7 Atomic AirForce Intake Manifolds (Manifold P/N 2701, 27013, 27014)
- Fuel Passage: 5/8 in diameter
- Finish: Black anodized, laser-etched logo
- Fittings: Includes (4) -6 to 3/4-16 O-ring adapters
- Part Number: 2723
If using tall EV1/Bosch-style injectors on LS7 or LT applications, there may be interference on low-hood vehicles such as the Corvette. 1999-2004 applications using a factory supply-and-return fuel line will require an added fuel pressure regulator. A GM 3/8" quick-connect release tool is needed to disconnect the factory fuel line. Rails accept large -8 (3/4-16) O-ring fittings, sold separately.
FAQ
What intake manifold does this fuel rail fit?
It's designed for LS7 Atomic AirForce intake manifolds, part numbers 2701, 27013, and 27014.
What size fuel passage does this rail have?
It has a 5/8-inch diameter fuel passage for high-flow, high-horsepower applications.
What fittings are included?
It includes (4) -6 to 3/4-16 O-ring adapters; large -8 O-ring fittings are sold separately.
Is a special tool needed for installation?
Yes, a GM 3/8-inch quick-connect release tool is needed to disconnect the factory fuel line on applicable applications.

