SKU: 55950488567

IPD 987.1 Cayman/Boxster S 3.4L 74mm Plenum ('07-'08) (87174-3.4)

Sale price$402.75 Regular price$447.50
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Ships within 48 hours · Estimated delivery Aug 15 - Aug 20

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Description

IPD 987.1 Cayman/Boxster S 3.4L 74mm Plenum ('07-'08) (87174-3.4)Works with Factory 74mm Throttle Body The perfectly balanced mid engine Cayman is Germany's canyon carving track meister. Unfortunately, the Cayman was delivered slightly under powered from the factory so as not to threaten the Carrera's thrown. The Cayman IPD intake plenum delivers increased performance that puts the Cayman in the ring with the Carrera. The IPD Plenum out performs every other intake system on the market. Don't be fooled by other

Works with Factory 74mm Throttle Body

The perfectly balanced mid engine Cayman is Germany's canyon carving track meister. Unfortunately, the Cayman was delivered slightly under powered from the factory so as not to threaten the Carrera's thrown. The Cayman IPD intake plenum delivers increased performance that puts the Cayman in the ring with the Carrera.

The IPD Plenum out performs every other intake system on the market. Don't be fooled by other competitors claiming to offer Plenums. All factory Porsche air distributors are of the "T" variety and therefore suffer from less than ideal air flow and intake air speed.

The genius and power behind the IPD plenums comes from the patented "Y" style design and optimized diversion areas to deliver real and impressive power that will transform your Cayman's performance and heighten your Porsche driving experience.

The 74mm Cayman S Plenum utilizes the factory 74mm throttle body. This version provides impressive power gains throughout the entire power band, especially in the midrange where it's most critical and most enjoyed.

The 74mm Cayman S Plenum application is recommended for Cayman enthusiasts looking for considerable performance gains without pushing the performance envelope. Max horsepower is 14 and max torque is 12 which all comes in around 5600 RPM. Power gains are realized throughout the entire power band without any loses in power.

The IPD Cayman S Plenum will provides the most impressive power gains of any engine upgrade available and will truly transform your Cayman driving experience. The 74mm IPD Plenum is the best Cayman modification on the market and will further compliment other mods such as exhaust, software and beyond.

Features:

  • Manufactured using only the highest quality materials
  • Gives your vehicle a truly unique and exotic style
  • Outperforms the competition with dyno proven results
  • A taste of luxury combined with unbeatable power gives you a superior edge
  • Fitment guaranteed and withstands the test of time.
  •  

    Shipping Notes
    • Free Standard Shipping on $100+ Orders to the USA.
    • Except Preorder products are shipped in 48 hours.
    • Delivery to the USA:
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    • If time is of the essence, please consider selecting expedited delivery for faster service.
    Exchange/Return Notes
    • We offer a 30-day return/exchange service after receiving.
    • Final sale items are not eligible for returns or exchanges.
    • To process your return/exchange, please contact us at [email protected]
    • Please click here for more details>>> Return & Exchange Policy
    SKU: 55950488567

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    Based on 11 reviews
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    Bradley Carlsen
    Bozeman, US
    ★★★★★ 5
    Clean 2016 Prius
    Size: 1-Pack
    Fit my 2016 Prius good. I have had it installed for 10,000 miles and seems to work good still. With a nasty truck or old oil burner around me (windows up) I can smell some fumes but not much. Fumes might be coming from other sources like Worn window seals or firewall wire passages. If I flip the switch to recirculated air, I don't smell much. Great for the price and will buy another when I need it. Filter was great for winter driving. Better protection than stock. I forgot there was dog smell in the car.
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    Reviewed in the United States on February 25, 2026
    A
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    Amazon Customer
    Lexington, US
    ★★★★★ 4
    Good air filter
    Size: 1-Pack, Size: 1-Pack
    This cabin air filter looks well made and fits perfectly. Installation is very easy, and once installed you can notice cleaner airflow inside the vehicle. For the price, it offers solid performance and is a great alternative to the OEM filter. The only reason I’m giving it 4 stars instead of 5 is that the material feels slightly thinner than the original filter, so it may need to be replaced a bit more often. That said, it still filters well and works as expected.
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    Reviewed in the United States on December 23, 2025
    A
    Verified Purchase
    Amazon Customer
    Grantham, US
    ★★★★★ 5
    Great replacement cabin air filters
    Size: 2-Pack
    This cabin air filter was a perfect fit for my 2019 Camry XLE. Great price, too. I just took the old one out and popped the new one in, took about 2 minutes or less. Seems to be great quality.
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    Reviewed in the United States on May 1, 2026
    A
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    Amazon Customer
    Birmingham, US
    ★★★★★ 5
    Great fit and quality.
    Size: 1-Pack
    Arrived quickly. Fit properly. Good price.
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    Reviewed in the United States on May 11, 2026
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    Jerry
    Natrona Heights, US
    ★★★★★ 5
    Fits Subaru forester hybrid good
    Size: 2-Pack
    These fit good on my forester very easy to change air flow seems very good. So I’m happy with these.
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    Reviewed in the United States on May 26, 2026

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