Performance Air Intake for Nissan 240SX S13 Silvia 2.4L (1991-1994)

Sharper Throttle Response for the Nissan 240SX S13 KA24DE

Who It’s For: Designed specifically for 1991-1994 Nissan 240SX S13 chassis owners running the dual-overhead-cam KA24DE engine.

The Problem: The factory air box on the KA24DE is a restrictive, multi-baffled plastic unit designed more for sound suppression than flow efficiency. Over time, these plastic components become brittle, and the internal baffling creates significant turbulence, which kills throttle response and prevents the high-revving 2.4L from reaching its full potential.

The Solution: This performance intake system replaces the choked factory assembly with a high-flow, mandrel-bent design. By providing a direct, smoother path to the throttle body, we have engineered this kit to optimize the volumetric efficiency of the KA24DE, providing that immediate “snappy” feel when you step on the gas.

Why This is the Ultimate Upgrade

• Optimized Airflow: Removes the restrictive factory resonators to deliver a more consistent and cooler air charge to the intake manifold.
• High-Flow Filtration: Includes a reusable, low-restriction air filter that provides superior filtration while allowing the 2.4L L4 to breathe properly under load.
• Straightforward Installation: Designed as a direct bolt-on for the S13 chassis, utilizing basic hand tools. This kit is a one-hour project that eliminates the bulky factory air box entirely.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1991 Nissan 240SX S13 Silvia 2.4L L4
• 1992 Nissan 240SX S13 Silvia 2.4L L4
• 1993 Nissan 240SX S13 Silvia 2.4L L4
• 1994 Nissan 240SX S13 Silvia 2.4L L4

Interchange Part Numbers:

1991, 1992, 1993, 1994, S13, KA24DE, 2.4L

The Performance Promise

Buy with confidence. We know the KA24DE platform inside and out. If you are looking to improve the acoustics and responsiveness of your S13, this is the most cost-effective modification you can make. Backed by real automotive experts and fast shipping.