Home / Shop / MSD Atomic EFI Billet Fuel Rails 2721 Rails, EFI, Aluminum, Black Anodized, Plumbing Kit, for use with LS1/2/6 AirForce Manifold, Kit

MSD Atomic EFI Billet Fuel Rails 2721 Rails, EFI, Aluminum, Black Anodized, Plumbing Kit, for use with LS1/2/6 AirForce Manifold, Kit

SKU: MSD2721

Fuel Rails

Msd Ignition

MSD Atomic EFI Billet Fuel Rails 2721 Rails, EFI, Aluminum, Black Anodized, Plumbing Kit, for use with LS1/2/6 AirForce Manifold, Kit

SKU: MSD2721

Fuel Rails

BACKORDER This item will be special ordered in for you. Contact us prior to purchase if you require an ETA.

We accept

Description

MSD Atomic EFI billet fuel rails are the perfect complement for your Atomic AirForce intake manifold. Whether you're looking for just rails, or complete kits with all the necessary plumbing--these fuel rails will have you looking for any excuse to pop the hood. They feature a bright dip, black anodized finish with laser-etched logos and a 5/8 in. diameter fuel passage flow capacity for high-horsepower applications. Make your engine look as good as it performs with MSD Atomic EFI fuel rails.

Features, specs, and parts may include:

* Fuel rails are machined to accept large -8 (3/4 in.-16) O-ring fittings
* Includes mounting brackets and hardware
* Includes four -6 to 3/4 in.-16 O-ring adapters

Part Type

Fuel Rails

Data: v4.2 - Upd: 2026-10-14 09:45:35

Specifications

Product Attributes - Brand: MSD Ignition
Product Attributes - Manufacturer's Part Number: 2721
Product Attributes - Part Type: Fuel Rails
Product Attributes - Product Line: MSD Atomic EFI Billet Fuel Rails
Product Attributes - UPC: 085132027217
Product Attributes - Fuel Rail Material: Aluminum
Product Attributes - Fuel Rail Color: Black
Product Attributes - Fuel Rail Inlet Size: -8 AN O-ring
Product Attributes - Fittings Included: Yes
Product Attributes - Hardware Included: Yes
Product Attributes - Remanufactured: No
Product Attributes - Quantity: Sold as a kit.
Product Attributes - Notes: For use with Atomic AirForce intake manifolds only. Includes 6 ft. of -6 AN hose, four 90 degree -6 AN fittings and two straight -6 AN fittings.

Reference Information

Brand Name/s	Msd Ignition
StreetFX SKU	msd2721
SFX Item ID	4973756
Supplier Item Code	4973756
Manufacturer SKU	2721
Manufacturer UPC	85132027217
Alternative References	LS1/2/6

Compatibility

Application Data

Make	CADILLAC
Model	CTS
Submodel	V
Beginning Year	2004
Ending Year	2005
Engine Type	V8
Liter	5.7
CID	346
Engine Size	5.7L/346
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	S
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CADILLAC
Model	CTS
Submodel	V
Beginning Year	2006
Ending Year	2007
Engine Type	V8
Liter	6.0
CID	364
CC	5967
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	U
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CAMARO
Submodel	Z28
Beginning Year	1998
Ending Year	2002
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CAMARO
Submodel	Z28 SS
Beginning Year	1998
Ending Year	2002
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	50TH ANNIVERSARY EDITION
Beginning Year	2003
Ending Year	2003
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	50TH ANNIVERSARY EDITION PACE CAR
Beginning Year	2003
Ending Year	2003
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Beginning Year	1997
Ending Year	2004
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	BASE
Beginning Year	2005
Ending Year	2007
Engine Type	V8
Liter	6.0
CID	364
CC	5967
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	U
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	INDIANAPOLIS 500 PACE CAR
Beginning Year	1998
Ending Year	1998
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	CORVETTE
Submodel	Z06
Beginning Year	2001
Ending Year	2004
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	S
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	SSR
Submodel	BASE
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	6.0
CID	364
CC	5967
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	H
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	CHEVROLET
Model	TRAILBLAZER
Submodel	SS
Beginning Year	2006
Ending Year	2009
Engine Type	V8
Liter	6.0
CID	364
CC	5967
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	H
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Fuel Rail Style (application)	MSD Atomic EFI
Make	CHEVROLET
Beginning Year	1997
Ending Year	2004
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Application Notes	For use with Atomic AirForce intake manifolds only. Applications using factory supply and return lines will require a fuel pressure regulator, sold separately. Includes 6 ft. of -6 AN hose, four 90 degree -6 AN fittings and two straight -6 AN fittings.

Fuel Rail Style (application)	MSD Atomic EFI
Make	CHEVROLET
Beginning Year	2001
Ending Year	2004
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Application Notes	For use with Atomic AirForce intake manifolds only. Applications using factory supply and return lines will require a fuel pressure regulator, sold separately. Includes 6 ft. of -6 AN hose, four 90 degree -6 AN fittings and two straight -6 AN fittings.

Fuel Rail Style (application)	MSD Atomic EFI
Make	CHEVROLET
Beginning Year	2005
Ending Year	2005
Engine Type	V8
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Application Notes	For use with Atomic AirForce intake manifolds only. Includes 6 ft. of -6 AN hose, four 90 degree -6 AN fittings and two straight -6 AN fittings.

Fuel Rail Style (application)	MSD Atomic EFI
Make	CHEVROLET
Beginning Year	2005
Ending Year	2009
Engine Type	V8
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Application Notes	For use with Atomic AirForce intake manifolds only. Includes 6 ft. of -6 AN hose, four 90 degree -6 AN fittings and two straight -6 AN fittings.

Make	PONTIAC
Model	FIREBIRD
Submodel	FORMULA
Beginning Year	1998
Ending Year	2002
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	PONTIAC
Model	FIREBIRD
Submodel	TRANS AM
Beginning Year	1998
Ending Year	2002
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	PONTIAC
Model	GTO
Submodel	BASE
Beginning Year	2004
Ending Year	2004
Engine Type	V8
Liter	5.7
CID	350
Engine Size	5.7L/350
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	G
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

Make	PONTIAC
Model	GTO
Submodel	BASE
Beginning Year	2005
Ending Year	2006
Engine Type	V8
Liter	6.0
CID	364
CC	5967
Engine Size	6.0L/364
Engine Family	Chevy small block Gen III/IV (LS-based engines)
Engine VIN Code	U
Application Notes	For Use w/Atomic Airforce Intake Manifolds PN[2702/27023/27024]; 5/8 in.; Black Bright Anodized Finish If Using Tall EV1/Bosch Style Injectors On LS7 Or LT Applications There May Be Interference On Low Hood Applications As On Corvette And Similar~Adapter

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MSD Atomic EFI Billet Fuel Rails 2721 Rails, EFI, Aluminum, Black Anodized, Plumbing Kit, for use with LS1/2/6 AirForce Manifold, Kit

MSD Atomic EFI Billet Fuel Rails 2721 Rails, EFI, Aluminum, Black Anodized, Plumbing Kit, for use with LS1/2/6 AirForce Manifold, Kit

Description

Part Type

Specifications

Reference Information

Compatibility

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