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IPD Competition Plenum Porsche 981 GT4 / Spyder (2015-2016)

SKU: 81482-3.8
Price
$1,095.00
Currently Backordered - You can still place your order and we'll ship your order as soon as the product is back in stock!

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Installation Services

Don’t worry about the hassle — let our expert team at Forza Motorworks handle the installation for you. Our professional installation ensures everything fits and operates exactly as intended, giving you clean, factory-quality results, proper wiring or mounting, and avoiding the risks of DIY mistakes. You’ll save time, avoid frustration, and get peace of mind knowing the job is done right the first time. Contact us to learn about our installation services and enjoy a seamless upgrade from day one.

FAQ

Shipping Information
For items that are in stock, purchases made after 9am EST will be usually be shipped out in the next 1-2 business days. Please inquire to confirm lead times if you have specific time constraints. Orders will be sent via signature required at our discretion unless otherwise requested.

International Shipping
Any and all customs duties, taxes, import fees, and/or tariffs assessed in connection with the purchase shall be the sole responsibility of the customer/end user.

Return Policy
We have a 30-day return policy, which means you have 30 days after receiving your item to request a return. To be eligible for a return, your item must be in the same condition that you received it, unused and in its original packaging. All returns are subject to a restocking fee based on item and package condition. Buyer is responsible for paying for return shipping costs. If you need a return label, we will email you a return label and deduct cost from refund. Original shipping costs are not refundable. Special order items are not eligible for return.

Cancellation Policy
In order to cancel your order you must email within 24 hours of placing your order or before your order has shipped, whichever occurs first. Special order items are not eligible for cancelation.

Exchange Policy
We have a 30-day exchange policy, which means you have 30 days after receiving your item to request an exchange. To be eligible for an exchange, your item must be brand new in box. Buyer is responsible for paying all shipping costs to exchange product.

Product Description

The Porsche 981 GT4 / Boxster Spyder IPD Intake Plenum is a performance-focused airflow upgrade that eliminates the restrictive factory intake plenum in favor of a precision-designed, high-flow “Y”-shaped manifold. This optimized plenum promotes smoother, laminar airflow into the engine’s intake tract, which improves throttle response and enhances mid-range and high-RPM performance characteristics. Drivers will also notice a subtle increase in intake sound that enriches the engine’s auditory experience. This upgrade becomes increasingly beneficial when paired with other bolt-on modifications such as performance headers, ECU tuning, or a larger throttle body, helping the 3.8 L flat-six breathe more efficiently at elevated demands.

Fitment Notes

  • Designed for Porsche 981 GT4 (2015–2016) and Boxster Spyder (2015–2016). 

  • Direct bolt-on replacement for the stock intake plenum.

  • Works with factory throttle body and intake hardware; larger throttle body upgrades may require a dealer adaptation procedure.

  • Ideal when combined with other performance upgrades like headers or ECU tuning for maximum benefit. 

Included

  • High-flow IPD intake plenum manifold designed specifically for the 981 GT4/Spyder. 

  • Mounting hardware for direct installation. 

Product Specs

  • Material: Precision-cast aluminum for strength and optimized airflow heat control. 

  • Design: “Y”-shaped with dimpled interior surface to reduce turbulence and increase air velocity.

  • Fitment: Direct replacement of factory intake plenum on 981 GT4 and Boxster Spyder models.

  • Throttle Body Compatibility: Works with factory setup; GT3 throttle body adaptation may require dealer procedure for correct operation. 

Product Features

  • Improves intake efficiency by reducing turbulence and promoting smoother airflow into the engine. 

  • Enhanced throttle response and improved drivability due to increased air velocity. 

  • Slightly richer intake sound enhances the driving experience without harsh resonance. 

  • Direct bolt-on installation preserves OEM fit orientation and simplifies upgrade. 

  • Great complement to performance updates such as headers, ECU tuning, or throttle body upgrades.