GReddy 13522316 Product Specifications
| Specification | Details |
|---|---|
| Manufacturer | GReddy / TRUST |
| Manufacturer part number | 13522316 |
| Product category | Intake plenum |
| Package length | 22.3 inches |
| Package width | 13.2 inches |
| Package height | 8.5 inches |
| Listed package weight | 8.2 kg (approximately 18.1 lb) |
| Package quantity | 1 |
| Product type | Automotive performance part |
Fitment notice: The supplied product information does not identify the engine, vehicle make, model, or production years. These must be verified against the manufacturer part number before publishing vehicle-specific fitment claims.
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How an Upgraded Intake Plenum Can Support Performance
An intake plenum acts as a shared air reservoir feeding the intake runners. Its volume, internal geometry, and connection to the throttle body influence airflow behavior throughout the engine’s operating range.
For turbocharged applications, plenum design becomes especially important as boost pressure and airflow demand increase.
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However, larger is not automatically better. Excessive plenum volume or poorly matched runner geometry can negatively affect throttle response and performance characteristics.
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The best results come from selecting components designed for the engine’s operating range and properly calibrating the engine management system.
Explore additional engine performance parts and tuning resources at Pro Street Online and My Pro Street Online.
Confirmed Vehicle Fitment — Nissan Skyline R33 RB25DET
GReddy confirms that part number 13522316 is the ECR33 RB25DET Intake Plenum, specifically designed for the Nissan Skyline R33 platform.
| Years | Make | Model | Engine |
|---|---|---|---|
| 1994–1998 | Nissan | Skyline GTS25t / ECR33 | 2.5L RB25DET Turbo |
Important installation detail: This plenum relocates the throttle body and is designed for a larger Nissan Q45 throttle body. To retain the factory throttle body, GReddy offers weld-on adapter 13920450, sold separately.
The manufacturer also offers compatible ECR33 aluminum piping, part number 12020911.
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Frequently Asked Questions
Does the GReddy 13522316 fit the Nissan Skyline GT-R?
Not as a direct-fit replacement. This intake plenum is designed for the RB25DET-powered ECR33, not the RB26DETT-powered GT-R.
Does this plenum increase horsepower?
It can support higher airflow demands on modified RB25DET engines, particularly those with upgraded turbochargers. Actual horsepower gains require appropriate supporting modifications and tuning.
Can I use my factory RB25DET throttle body?
Yes, with the separately available GReddy 13920450 weld-on throttle body adapter and appropriate installation work.
Does it fit an RB25DET engine swap?
Potentially, but chassis clearance, charge piping, throttle linkage, and other components must be checked.
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