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Spectre 9804

Spectre Plenum Kit
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4.5 out of 5 stars 2 Customer Reviews
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$175.19 USD
MSRP $233.59 25.0% Off
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The Spectre Polished Aluminum 4 Inch Dual Plenum gives you the ability to design your own custom cold air intake system. With an ultra-low profile design, the dual plenum can fit under many flat hoods and provide a show car look and feel. Engineered for optimum fit and function, the plenum inlets are angled 180 degrees apart. Installation is easy with no special tools or skills required.
  • 180 degree angle between air inlets
  • Polished aluminum for a show car look
  • Dual plenum for 4 inch air intake tubes
  • Ultra-low profile design can fit under many flat hoods
  • Easy to install with no special skills or tools required

Available Information

Part SPE-9804 Product Specifications

Warranty90 Days
Product StyleSpectre Plenum Kit
Length15.75 in (400 mm)
Outside Diameter4 in (102 mm)
Clamps IncludedNo Clamps Included
Package Contents1 Plenum
Package Quantity1
Weight3 lb (1.4 kg)
Product Box Height5 in (127 mm)
Product Box Length10 in (254 mm)
Product Box Width20 in (508 mm)
Couplers IncludedNone
Material UsedAluminum
Mounting Hardware IncludedNo
WARNING: Cancer and reproductive

Product Reviews

July 24, 2018 - Part 9804
This is a fantastic component and I'm very pleased with it. The only disappointment is that there's no Adapter Plate available to make it mount properly and securely to my Weber DFEV Carb. It would be very beneficial if K&N and/or Spectre Performance would offer this critical Adapter Plate. I had to customize a K&N Adapter Plate for a Weber DGEV Carb in order to get it mounted on my Weber DFEV Carb. On the bright side - I've noticed a very significant improvement in horsepower and acceleration since I mounted this Spectre Performance Dual Plenum with 4 Diameter Aluminum Tubes with Spectre Performance Air Filters mounted on each end of the tubes. I'm getting a much greater volume of air and cooler air to my carb The Spectre Performance Technician I've been talking with has been very helpful too I'll submit some photos of my 1974 VW Thing's engine bay ASAP. The cold ram air system using K&N and Spectre Performance components looks awesome and provides a very dramatic improvement in performance. Thanks Bruce

Bruce Hajost
Lancaster, Ohio
November 9, 2015 - Part 9804
Guy is very professional and knows what he is doing. Very pleased with his knowledge, experience, and help. Thanks

Richard Davis
St. Louis, Missouri
Review part 9804