ISR Performance Fabricated Intake Manifold & Fuel Rail Kit - LS3/L92 102MM Square port low profile

The ISR Performance fabricated intake manifold and fuel rail kit for LS3 and L92 square port engines is a low profile, 102mm throttle body manifold built to pull more mid-range and top-end power out of an LS with upgraded heads and camshaft. It ships with a billet fuel rail and the fittings needed to plumb it, which makes it a strong fit for a 240SX or 350Z LS swap where hood clearance and a tidy fuel system both matter.

Manifold

• Fabricated sheet aluminum with fully TIG welded runners
• 102mm throttle body flange
• Square port LS3 / L92 cylinder head pattern
• Low profile design for hood clearance in swap applications
• Matte black finish

Fuel rail

• Billet gold anodized top feed fuel rail for 14mm injectors
• Adapters included for stock height LS3 (34mm) and 48mm height injectors
• 8AN inlet and outlet fittings with 6AN ORB reducers included
• 6AN crossover fuel line

Who it suits

Stock LS3 manifolds are good up to a point. Once heads and cam are in the picture, the factory plastic intake becomes a limit, and this manifold is aimed at exactly that combination. It is equally at home on a street-driven swap and a track car.

Fitment

• GM LS3 and L92 square port cylinder heads
• Requires a 102mm throttle body (not included; throttle body options are listed separately)

What is in the box

• 102mm fabricated intake manifold
• 14mm top feed fuel rail compatible with 34mm and 48mm injectors
• 6AN crossover fuel line
• Hardware

All ISR Performance products are designed for off-road use only.