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Atomic EFI LS
Shop MSD Atomic EFI LS components for GM LS and LT engine swaps. Find Atomic AirForce intake manifolds for LS1, LS2, LS6, LS7, and Gen V LT1 engines, plus billet fuel rails, a 90mm LS throttle body, fuel-pressure components, throttle-body adapters, cable brackets, seals, fasteners, and service parts.
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Atomic EFI TBI
Shop MSD Atomic EFI TBI systems for converting carbureted engines to electronic fuel injection. Find complete Atomic EFI master kits, throttle body kits, fuel pumps, regulators, wideband oxygen sensors, ECUs, handheld controllers, power modules, fuel-system components, sensors, and replacement parts.
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Atomic EFI TBI
Features
- Less wiring and fewer connections for the easiest installation
- Integrated sensors reduce the number of connections
- Mounts in place of standard square bore carburetors
- Self-learning technology keeps the engine performing smooth through any condition
- Supplied with wide-band 02 and coolant temp sensors for easy installation
- Controls the activation of two cooling fans
- Supports nitrous and boosted applications
The Atomic TBI is designed to support up to 625 horsepower when used with the specified high horsepower fuel pump.

Diagram
- Internal Fuel Rail - By integrating the fuel rail we were able to remove fitting connections to reduce the areas that a leak could develop (not to mention the enhanced appearance).
- ECU and Sensors - The ECU is integrated to the throttle body! This unique design reduces wiring and keeps your EFI installation easier than ever. The TPS, MAP, IAT and fuel pressure sensors are all incorporated into the ECU saving you wiring and connections. In fact, the only sensors you need to connect are the coolant temp and the wide-band oxygen sensors.
- Injectors - Fuel delivery is provided by four precision 80-pound injectors. These injectors feature a stainless steel ball and seat metering method for maximum internal sealing. For a secure mount the injectors are sealed between the housing and the cast fuel rails.
- TPS - The Atomic’s TPS is an automatic, self-calibrating, non-contact sensor. That means you don’t have to worry about configuring it during set up. Also, with no contact, there is nothing to wear out or replace.
- Mount and Blades - The Atomic throttle body will bolt in place of a standard square bore carburetor and accepts most common throttle and kick down linkages. The throttle bores are 1.75” diameter and each blade is supported with precision roller bearings for smooth pedal operation.

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MSDAtomic EFI Master Kit This is the complete kit for anyone planning to convert from a carburetor to Atomic EFI. You get the Throttle Body, Power Module (with Wide Band O2 sensor), Handheld Controller, and the Standard Fuel Kit for up to 525hp (at the crank).Part# 2900Free ShippingEst. Ship Date: 09/18/2026
$2,249.95
TrendingMSDAtomic AirForce Gen-V LT Intake Manifold, Red Performance Polymer Intake Manifold for GM Gen-V LT EnginesPart# 2700Free ShippingIn Stock
MSRP $1,912.95$1,528.95Save $384.00
MSDHigh Pressure Electric Fuel Pump Multiport EFI systems require a stable fuel supply to maintain best performance throughout the engine's rpm range.Part# 2225Free ShippingIn Stock
MSRP $199.95$159.25Save $40.70
MSDAtomic AirForce LS Cathedral Port Intake Manifold - Red Performance Polymer Intake Manifold for GM LS1, LS2, and LS6 EnginesPart# 2702Free ShippingIn Stock
MSRP $1,574.95$1,258.95Save $316.00
Part# 2905Free ShippingIn Stock
$1,449.95
Part# 2911Free ShippingIn Stock
MSRP $658.95$525.95Save $133.00
Part# 2912Free ShippingIn Stock
MSRP $519.95$414.95Save $105.00
MSDSeal Port Kit For Airforce Manifold Pn 2701-2702 Use this seal port kit for your PN 2701-2702 AirForce Manifold. Set of 8.In Stock
MSRP $103.95$82.52Save $21.43
MSDAtomic AirForce LS7 Intake Manifold - Red Performance Polymer Intake Manifold for GM LS7 EnginesPart# 2701Free ShippingIn Stock
MSRP $1,631.95$1,303.95Save $328.00
MSDAtomic EFI Throttle Body Kit MSD CARB Legal Atomic Throttle Body Fuel Injection Conversion for Carbureted EnginesPart# 2910Free ShippingIn Stock
$1,799.95
Part# 2930Free ShippingIn Stock
MSRP $188.95$151.15Save $37.80
MSDPerimeter Seal Kit For Airforce Manifold - LS Use this perimeter seal kit for your PN 2701-2702 AirForce Manifold.In Stock
MSRP $78.95$63.17Save $15.78
MSDAtomic TBI Throttle Position Output Module Provides 0-5V TPS signal for a transmission controller or other accessory.Part# 2939Free ShippingIn Stock
MSRP $358.95$286.95Save $72.00
MSDMSD Atomic EFI Billet Fuel Rails LS7 Atomic AirForce Intake Manifolds - Fits Manifold Part Numbers 2701 / 27013 / 27014Part# 2722Free ShippingIn Stock
MSRP $299.95$238.95Save $61.00
In Stock
MSRP $156.95$125.05Save $31.90
Part# 2713Free ShippingIn Stock
MSRP $124.95$99.85Save $25.10
MSDAtomic TBI, ECU, Early Version Replacement Part, on Early version Atomic TB using EV6 Connector.Part# 2906Free ShippingIn Stock
MSRP $674.95$538.95Save $136.00
Part# 2714Free ShippingIn Stock
MSRP $112.95$89.96Save $22.99
In Stock
MSRP $71.95$56.93Save $15.02
MSDProgrammable Fuel Pump Voltage Booster The controller allows you to increase voltage based on boost.Part# 2351Free ShippingIn Stock
MSRP $843.95$673.95Save $170.00
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rail kit for use on LS1/2/6 Atomic AirForce intake manifolds. Fits manifold part numbers 2702, 27023 and 27024.Part# 2721Free ShippingIn Stock
MSRP $479.95$276.95Save $203.00
MSDMSD Atomic EFI Billet Fuel Rails Billet aluminum fuel rail kit for use on Gen-V LT1 Atomic AirForce intake manifolds. Fits manifold part numbers 2700, 27003 and 27004.Part# 2725Free ShippingIn Stock
MSRP $409.95$326.95Save $83.00
MSDAtomic Airforce Throttle Body Seal For Pn 2700, Pn 2701 And Pn 2702 Atomic Airforce Throttle Body Seal for PN 2700, PN 2701 and PN 2702In Stock
MSRP $22.06$17.65Save $4.41
MSDMSD Atomic EFI Billet Fuel Rails LS7 Atomic AirForce Intake Manifolds - Fits Manifold Part Numbers 2701 / 27013 / 27014Part# 2723Free ShippingIn Stock
MSRP $449.95$259.95Save $190.00
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rails for use on LS1/2/6 Atomic AirForce intake manifolds. Fits manifold part numbers 2702, 27023 and 27024Part# 2720Free ShippingIn Stock
MSRP $292.95$232.95Save $60.00
MSDLS Airforce Intake Fastener Kit For Pn 2701 And Pn 2702 Replacement fastener kit for LS Airforce intake manifolds PN 2701 and PN 2702Part# 2712Free ShippingIn Stock
MSRP $299.95$238.95Save $61.00
MSDO-Ring Service Kit For Airforce 2701/02 O-ring kit that seal the bolts that hold the manifold to the cylinder head when using an Atomic AirForce Manifold PN 2701 or 2702.In Stock
MSRP $22.06$17.65Save $4.41
MSDAtomic TBI, ECU, Later Version Replacement Part, on Later version Atomic TB using EV1 Connector.Part# 2907Free ShippingIn Stock
MSRP $674.95$538.95Save $136.00
In Stock
MSRP $88.95$70.70Save $18.25
MSDThrottlebody Sealing Plate Kit For Atomic Airforce For Pn 2701 And Pn 2702 Throttlebody Sealing Plate Kit for Atomic Airforce for PN 2701 and PN 2702In Stock
MSRP $71.95$56.87Save $15.08
In Stock
MSRP $94.95$75.86Save $19.09
MSDIdle Air Control Motor for Atomic TBI Replacement IAC motor for Atomic TBI and Atomic TBI 2, and Sniper 2In Stock
MSRP $71.95$56.87Save $15.08
MSDATOMIC TBI, COOLANT TEMP SENSOR Atomic EFI Support Component. Atomic TBI Coolant Temperature SensorIn Stock
MSRP $16.38$13.10Save $3.28
MSDAdapter Kit For Airforce Manifold Retain your LS-1 style injectors with your PN 2702 AirForce Manifold.Part# 2705Free ShippingIn Stock
MSRP $67.95$54.14Save $13.81
In Stock
MSRP $71.95$56.87Save $15.08
MSDAtomic Airforce 3-Bolt Throttle Body Adapter Supplied with an adapter plate and mounting hardware. Note: OE 3-bolt throttle body seal not supplied.In Stock
MSRP $93.95$45.64Save $48.31
MSDMsd Atomic EFI Billet Fuel Rails Billet aluminum fuel rails for use on Gen-V LT1 Atomic AirForce intake manifolds. Fits manifold part numbers 2700, 27003 and 27004.Part# 2724Free ShippingIn Stock
MSRP $299.95$238.95Save $61.00
Part# 2920Free ShippingIn Stock
MSRP $899.95$718.95Save $181.00
Part# 2922Free ShippingIn Stock
MSRP $658.95$525.95Save $133.00
In Stock
MSRP $175.95$140.35Save $35.60
In Stock
$71.85
In Stock
MSRP $104.95$83.66Save $21.29
In Stock
MSRP $47.27$37.82Save $9.45
MSDAtomic, Fuel Pressure Regulator The recommended operating range is 15-90 psig (pounds per square inch gauge).Part# 2938Free ShippingIn Stock
MSRP $449.95$358.95Save $91.00
Part# 2940Free ShippingIn Stock
MSRP $1,199.95$958.95Save $241.00












































