Audi 8V S3 Engine Billet Aluminum Plenum Intake Manifold

Unlock the full performance potential of your Audi S3 8V with this Billet Aluminum Intake Manifold, engineered specifically for high-horsepower EA888 Gen 3 applications. Designed as a direct replacement for the restrictive factory plastic manifold, this upgrade delivers the airflow, durability, and tuning flexibility required for big-turbo and high-boost builds.

Machined from high-grade billet aluminum, every section of this manifold is CNC-cut, TIG-welded, and built to withstand extreme boost pressures. Unlike the OEM plastic manifold — known for cracking, warping, and limiting airflow under increased load — this billet design provides the reliability and strength needed for serious performance setups, from aggressive street builds to dedicated drag or track cars.

A larger plenum chamber and optimised runner geometry ensure maximum airflow distribution across all four cylinders, preventing lean conditions and promoting consistent combustion even when running elevated boost levels. Whether you're pushing an IS38 hybrid or stepping up to a full-frame turbo, this manifold is the ideal foundation for high-power EA888 builds.

Key Features

Billet Aluminum Construction

• CNC-machined and TIG-welded for extreme strength and precision

• Built to withstand high boost pressures without cracking or distortion

High-Flow, Large Plenum Design

• Enlarged plenum for increased air volume

• Smooth, optimised runners for maximum flow and balanced cylinder distribution

MPI-Ready (Multi-Port Injection Compatible)

• Includes provisions for MPI setups (varies by version)

• Supports popular injector brands such as Bosch, Injector Dynamics, and FIC

• Allows fueling capacity for big-turbo setups beyond DI limits

Durability & Heat Resistance

• Far stronger than OEM plastic manifolds

• Resistant to heat soak, boosting-related fatigue, and long-term stress

Track-Proven Engineering

• Optimised for tuned EA888 Gen 3 engines used in drag racing, roll racing, and circuit applications

• Compatible with custom ECU tuning and advanced fueling strategies

Performance Benefits

• Supports big turbo and high-boost applications

• Enables reliable MPI fueling for 450–600+ HP builds

• Stronger, safer, and more reliable than OEM plastic manifolds

• Improves airflow efficiency, throttle response, and high-RPM stability

• Provides a durable long-term solution for heavily modified EA888 engines

Vehicle Fitment

• Audi S3 8V (2013–2020)
  Sedan, Sportback & Hatchback

• EA888 Gen 3 2.0 TFSI Engine

(Please confirm compatibility with your exact engine code before purchase.)

What’s Included

• Billet aluminum intake manifold assembly

• Gasket & seal kit

• Mounting hardware (bolts, fittings, block-off plugs)

Why Upgrade?

The factory Audi S3 8V intake manifold is built from plastic — a material that performs adequately at stock power levels but becomes a major limitation under elevated boost. OEM manifolds are known to warp, deform, and restrict airflow during high-power tuning.

This Billet Aluminum Intake Manifold solves those issues entirely. It delivers the airflow volume, durability, and fueling flexibility needed for hybrid turbo (450+ HP) and full-frame turbo (600+ HP) builds. Pairing this manifold with MPI fueling unlocks the headroom needed to safely support high horsepower without maxing out the DI system or risking engine imbalance at high load.

Recommended Supporting Mods

• Upgraded Turbo (IS38 Hybrid or Full-Frame Big Turbo)

• Upgraded High-Pressure Fuel Pump (HPFP)

• Multi-Port Injection (MPI) Kit (recommended for 450+ HP)

• Upgraded Front-Mount Intercooler (FMIC)

• Custom ECU Tune