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

High-Flow Induction for the Nissan 240SX S13 & KA24DE Engine Family

Who It’s For: Designed specifically for Nissan 240SX S13 owners running the dual-overhead-cam KA24DE engine family who want to sharpen throttle response and improve top-end breathing.

The Problem: The stock intake on the KA24DE was built for silence, not speed. The factory airbox is a maze of restrictive plastic baffles and resonant chambers designed to muffle engine noise. For the enthusiast, this creates a "lazy" throttle feel and prevents the engine from breathing efficiently as you climb toward the 6,900 RPM redline.

The Solution: We engineered this intake system to bypass those factory bottlenecks. By utilizing mandrel-bent aluminum piping, we provide a direct, high-velocity path for cold air to reach the throttle body, correcting the air-starved nature of the stock KA24DE setup.

Why This is the Ultimate Upgrade

• Enhanced Velocity: The smooth-bore aluminum piping reduces turbulence compared to the ribbed factory rubber hoses, allowing for a more immediate jump in RPM.
• Thermal Management: Lightweight aluminum dissipates heat faster than heavy cast components, while the open-element design draws in a higher volume of air than the restrictive OEM box.
• Maintenance-Free Filtration: Features a high-flow, washable synthetic filter, eliminating the need for restrictive paper throw-away filters.

Technical Specifications

Compatibility & OEM Reference

Fits the Following Vehicles:

• 1991 Nissan 240SX Base/SE/LE (Coupe & Hatchback) 2.4L L4
• 1992 Nissan 240SX Base/SE/LE (Coupe, Hatchback, & Convertible) 2.4L L4
• 1993 Nissan 240SX Base/SE (Coupe, Hatchback, & Convertible) 2.4L L4
• 1994 Nissan 240SX SE (Convertible) 2.4L L4

Interchange Part Numbers:

S13-240SX-1991, S13-240SX-1992, S13-240SX-1993, S13-240SX-1994, 2.4L-L4-KA24DE, 2389CC-DOHC

The Performance Promise

Buy with confidence. This kit is designed for a direct bolt-on installation using basic hand tools in under 60 minutes. It is highly recommended to disconnect your battery for 10 minutes following the install to allow the ECU to map the new airflow parameters for the KA24DE. Backed by real automotive expertise and fast shipping.

Common Questions

Which Nissan 240SX models does this intake fit?
This intake is built for 1991-1994 Nissan 240SX S13 models equipped with the 2.4L KA24DE dual-overhead-cam (DOHC) inline-4 engine, including Coupe, Hatchback, and Convertible body styles.

Will this fit a 240SX with the single-cam KA24E or an SR20 engine?
This system is engineered specifically for the 1991-1994 2.4L KA24DE DOHC engine setup.

What is included with the air intake kit?
The kit includes smooth-bore mandrel-bent aluminum intake piping and a high-flow, washable synthetic air filter designed to replace the restrictive factory airbox and rubber intake hose.

How long does installation take?
It is a direct bolt-on installation that takes under 60 minutes using basic hand tools.

Do I need to reset the ECU after installing the intake?
Disconnecting the battery for 10 minutes after installation is recommended so the ECU can map the updated airflow parameters for the KA24DE.