Key Features and Benefits
- Vehicle-specific S14/S15 SR20DET application: Designed for compatible Nissan Silvia turbocharged configurations.
- Type-24E intercooler core: Measures 284 × 600 × 66mm.
- Lightweight tube-and-fin construction: Helps limit unnecessary front-end weight.
- Front-mount configuration: Positions the intercooler ahead of the radiator.
- Low-pressure-loss design: Intended to balance charge-air cooling with turbocharger response.
- Suitable for moderate performance upgrades: Developed for factory and compatible upgraded turbo applications.
- GReddy engineering: Designed as part of the manufacturer’s established SR20DET performance product range.
- Application-specific installation components: Designed around the S14/S15 platform, with modifications required.
GReddy 12020480 Technical Specifications
| Specification | Details |
|---|---|
| Manufacturer | GReddy / TRUST |
| Part number | 12020480 |
| Product series | Spec-LS |
| Core type | Type-24E |
| Product type | Front-mount intercooler kit |
| Core construction | Tube-and-fin |
| Core height | 284mm / 11.18 inches |
| Core width | 600mm / 23.62 inches |
| Core thickness | 66mm / 2.60 inches |
| Installation position | In front of radiator |
| Engine | Nissan SR20DET |
| Chassis | Nissan Silvia S14 / S15 |
| Transmission | Manual applications; automatic fitment unconfirmed |
| Battery requirement | 34B19L size specified |
| Factory fog lights | Cannot be retained |
| Bumper modifications | Required |
| Bumper reinforcement modifications | Required |
| Separate hot pipe | Verify configuration; may be required |
| Competition use | Manufacturer specifies race use only in the USA |
Vehicle Fitment – Nissan Silvia S14 and S15
| Production period | Make | Model | Chassis | Engine |
|---|---|---|---|---|
| October 1993–December 1998 | Nissan | Silvia | S14 | SR20DET |
| January 1999–August 2002 | Nissan | Silvia | S15 | SR20DET |
What About the U.S.-Market Nissan 240SX?
The U.S.-market 1995–1998 Nissan 240SX shares the S14 chassis architecture but was originally equipped with the naturally aspirated KA24DE engine.
This GReddy intercooler is not a direct-fit upgrade for a factory KA24DE 240SX.
It is intended for SR20DET-powered applications. An S14 240SX with an SR20DET swap may be able to use the kit, but compatibility depends on the turbocharger, piping, radiator support, bumper, and engine-bay configuration.
Do not list this kit as a direct-fit intercooler for every 1995–1998 Nissan 240SX.
Why the Type-24E Tube-and-Fin Core Matters
Intercooler performance is about more than installing the largest possible core.
A properly selected intercooler must reduce intake-air temperature without creating excessive pressure drop or blocking too much airflow to the radiator.
The GReddy Type-24E uses a lightweight tube-and-fin construction with internal fin geometry intended to support efficient airflow.
Compared with heavier core designs, tube-and-fin intercoolers can offer useful weight and airflow advantages when correctly engineered.
The 66mm-thick Type-24E core also provides a balance between cooling surface area and the space available behind the Silvia front bumper.
Our Intercooler Sizing and Charge Piping Guide for Turbo Builds explains how core thickness, frontal area, pressure drop, and radiator airflow affect real-world performance.
Those considerations are particularly important on S-chassis cars used for sustained drifting or circuit driving.
A Practical Intercooler for Moderately Modified SR20DET Engines
The GReddy Spec-LS is positioned as a balanced intercooler for factory turbocharger and selected upgraded turbocharger applications.
That makes it a logical option for enthusiasts building an SR20DET around responsive boost delivery rather than choosing the largest available intercooler.
However, a larger intercooler does not automatically create a specific horsepower gain.
Actual results depend on compressor efficiency, boost pressure, engine calibration, airflow, and operating conditions.
Our Complete Street Turbo Build Guide explains why the intercooler, turbocharger, fuel system, boost control, and ECU tuning must be selected as a coordinated package.
Installation Requirements You Need to Know
The GReddy 12020480 is not a modification-free installation.
According to GReddy, installation requires changes to the front-end packaging.
Required Fitment Considerations
- Front bumper modification: Clearance work is required.
- Bumper reinforcement modification: The factory reinforcement must be modified as specified by GReddy.
- Battery size change: GReddy specifies a 34B19L battery.
- Factory fog lights: The original fog lamps cannot be retained.
- Transmission compatibility: Automatic-transmission applications have not been confirmed.
- Turbocharger configuration: Confirm compatibility with the existing turbocharger and charge piping.
- Hot-side piping: Confirm whether a separate hot pipe is required for the build.
Because modifications to bumper reinforcements can affect vehicle safety, installation should be evaluated by a qualified performance shop. Do not remove or compromise crash-protection components without understanding the consequences.
Preventing Boost Leaks After Installation
Even an efficient intercooler cannot perform correctly when the charge-air system leaks.
A loose coupler, damaged silicone connector, cracked weld, or poorly secured clamp can cause the turbocharger to work harder to achieve the requested manifold pressure.
After installation, inspect every charge-air connection.
Use properly sized couplers and clamps, verify pipe alignment, and confirm that the piping does not rub against bodywork or moving components.
Pressure-test the completed system with regulated air and stay within the pressure limits of the lowest-rated component.
Our Intercooler Sizing and Charge Piping Guide covers boost-leak symptoms, pipe-end retention, coupler selection, and safe pressure-testing procedures.
Frequently Asked Questions
Does GReddy 12020480 fit the Nissan Silvia S14?
Yes. GReddy officially lists the S14 Silvia equipped with the SR20DET engine.
Does it fit the Nissan Silvia S15?
Yes. The manufacturer lists both S14 and S15 Silvia SR20DET applications.
Does it fit a 1995 Nissan 240SX?
Not as a direct-fit upgrade for the factory KA24DE engine. SR20DET-swapped S14 vehicles require a full compatibility check.
What are the intercooler core dimensions?
GReddy specifies 284mm high, 600mm wide, and 66mm thick.
Is the GReddy 12020480 a front-mount intercooler?
Yes. It mounts ahead of the radiator.
Does installation require cutting?
Yes. GReddy specifies bumper and reinforcement modifications.
Can I keep my factory fog lights?
No. GReddy identifies the original fog lamps as incompatible with this installation.
Is the kit suitable for an automatic S14 or S15?
GReddy has not confirmed automatic-transmission compatibility.
Does it increase horsepower?
An effective intercooler can support more consistent power by reducing charge-air temperature, but a specific horsepower gain is not guaranteed.
Is it street legal?
GReddy’s U.S. product listing specifies competition use only and states that the product is not legal for public-road use in the United States.
Upgrade Your SR20DET With GReddy Charge-Air Cooling
The GReddy 12020480 Spec-LS Type-24E Intercooler Kit offers a performance-oriented front-mount cooling solution for Nissan Silvia S14 and S15 SR20DET builds.
With its 284 × 600 × 66mm tube-and-fin core, lightweight design, and focus on cooling efficiency and response, it is a practical option for enthusiasts planning a compatible turbocharged competition build.
Choose GReddy 12020480 for your S14 or S15 SR20DET when your build calls for a genuine Type-24E front-mount intercooler and you are prepared for the required installation modifications.
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