The JEGS 513066 GM LS fabricated aluminum sheet metal intake manifold was designed to improve the look and performance of your LS engine. It features a 102mm throttle body opening for maximum airflow. Velocity-stacked runners allow air to move more smoothly at high velocities. The head flanges are 7/16 in. thick, and the plenum is constructed of 3.5mm thick T-6061 aluminum and is TIG welded to ensure consistent strength and performance. Individual port o-rings guarantee a good seal with the cylinder heads and throttle body.

JEGS 555-513066 Fabricated Intake Manifold Dimensions:

• Front Height: 8 in.
• Rear Height: 8 in.
• Front Intake Bolt to Intake Front: 3.1875 in.
• Rear Intake Bolt to Intake Rear: -0.500 in.
• Intake Runner: 1.242 in. x 2.542 in. x 4 in. Long
• Intake Flange: 0.444 in. Thick
• Throttle Body Opening: 102 mm
• Fuel Rails use -8 AN ORB Fittings

JEGS 555-513066 Fabricated Intake Manifold​ Includes:

• (1) LS3 Style MAP sensor port provision at the rear of the manifold. We recommend 555-14538 MAP sensor
• (4) Vacuum port fittings for the bottom of the manifold
  • (1) 1/8 in.-28 thread x 1/4 in. hose end
  • (1) 1/8 in.-28 thread x 5/16 in. hose end
  • (1) 1/8 in.-28 thread x 7/16 in. hose end
  • (1) 1/4 in.-19 thread x 1/2 in. hose end

JEGS 555-513066 Fabricated Intake Manifold Notes:

• This intake is designed to work with stock LS heads. The use of some aftermarket cylinder heads may result in port misalignment.
• Compatible with LS3 style injectors

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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