Product Summary

Universal Fit, Base Plate Housing Component, Natural

  • Flat base increases airflow into the engine
  • Up to 12 hp increase over standard drop base air cleaner
  • Reduces air inlet temperatures to engine
  • Works with all standard 14-inch round air filters
  • High-strength aluminum design

Key Specs

MFG. Part #91011069
BrandSpeedway Motors

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Speedway Motors 91011069 Details

  • 14-inch spun aluminum air cleaner bottom for strength and great looks
  • Uses standard 14-inch diameter air filters
  • Up to 12 hp increase over drop base air cleaner
  • Flat base increases airflow to carburetor/throttle body
  • Reduced air inlet temperatures
  • Cooler/denser air makes more power

Help Your Engine Breathe with Our Flat Air Cleaner Base

Our 14-inch Flat Air Cleaner Base is just what your hotrod or race car needs to not only look its best, but to make more power too! This heavy-gauge spun aluminum air cleaner base features a single smooth radius for the airflow path, reducing airflow restrictions and turbulence commonly seen in typical “drop base” style air cleaners. These drop base air cleaners require the airflow to change direction twice as the incoming air moves up and over the drop base’s inner “bulge” for the air to reach your carburetor or throttle body. With our flat air cleaner base there are no restrictions, allowing increased airflow, which in turn makes more power! We’ve seen up to a 12 horsepower increase using this flat air cleaner base versus the traditional drop base. Further benefits of the flat base design include reduction in air inlet temperatures since the flat base pushes the filter media upwards into the air stream above the hood, moving the air cleaner out of the hot engine bay.

Constructed to Last

With heavy-gauge spun aluminum construction, our flat air cleaner base is strong and will not flex under pressure. You can use your choice of 14-inch air filter and top and still reap all the benefits of having a flat air cleaner bottom. We recommend one of our Sure Seal billet aluminum air cleaner spacers to compliment this base. for mounting. The spacer incorporates a rubber O-ring for a positive seal to the base of the air cleaner (don’t forget that carburetor or throttle body gasket too!).

CARB Warning

For race/ off road use or for use on pre-1966 vehicles.

Emissions warning: this part only legal for sale or use in California for racing (competition) vehicles which may never be used, registered, or licensed for use upon a public highway, or if installed in vehicles model-year 1965 or older; motorcycles model-year 1977 or older; or off-highway recreational vehicles (such as off-road motorcycles and all-terrain vehicles) model-year 1996 and older. Any other use renders the vehicle tampered and not legal for use on California public highways (any public street or roadway, public dirt road, public park, or publicly maintained right of way open to the use of the public for vehicular travel). Violations subject to $37,500 penalty per violation per vehicle, revocation of registration, loss of use on California public right of ways, and proof of correction for tampering. There are similar restrictions and penalties under federal law and the laws of all other states with penalties under federal law of up to approximately $45,268 per tampered vehicle and/or engine.

Speedway Motors 91011069 Specifications

MFG. Part #91011069
BrandSpeedway Motors
Housing ComponentBase Plate
Base StyleFlat
Fuel Intake TypeSingle 2/3/4-Barrel
Inlet Diameter (Fraction)5-1/8"
Overall Diameter14.25"
Housing MaterialAluminum
Housing FinishNatural
Housing ColorNatural
Overall Height1.60"
Material Thickness.063"
Sold in QuantityEach
NotesMinimum filter height required is 4"