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Custom Assemblies > Custom Racing Assembly

 List Price: $76.05
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K&N Custom Air Filters for Single or Two Barrel Carburetors - K&N Custom Air Filter kits are designed to allow the maximum performance from your carburetors, yet keep the dirt on the outside where it belongs. These assemblies come with custom chrome top and base plates and the famous K&N High-Flow Washable Air Filter.

[More Information on Custom Air Filters for Single or Two Barrel Carburetors]
  • Designed to increase horsepower and acceleration
  • Show quality with custom chrome top and base
  • Washable and reusable air filter
  • High air flow with excellent filtration
  • One year limited warranty
Available Information
Installation Instruction Sheet
56-9158 Vehicle Applications

Part 56-9158 Product Specifications
Product Style: Custom Assemblies
Air Filter Color: Red
Air Filter Height: 2.469 in (63 mm)
Air Filter Inside Diameter: 5.344 in (136 mm)
Air Filter Material: Cotton Gauze
Air Filter Shape: Round Tapered
Inlet Diameter: 5.344 in (136 mm)
Mounting Hardware Included: Yes
Neck Flange: 5.344 in (136 mm)
Overall Height: 2.469 in (63 mm)
Replacement Filter: None
Style: Round
Top Material/Finish: Chrome
Top Style: Open
Air Filter Large End Diameter: 6.375 in (162 mm)
Air Filter Outlet Shape: Round
Base Inside Diameter: 5.344 in (136 mm)
Base Outside Diameter: 6.375 in (162 mm)
Clamp Material: No Clamps Required
Clamp Style: No Clamps Required
Color: Red
Filter Material: Cotton Gauze
Flanges: None
Height: 2.469 in (63 mm)
Inner Wire: No
Intake Pipe Ports: All intake tube ports needed for the specified applications are included
Mass Air Flow Sensor Adapter Included: Mass Air Flow Sensor Adapter Included When Required
Package Contents: 1 Air Filter
Package Quantity: 1
Size: 6-9
Top Inside Diameter: 4.469 in (114 mm)
Top Outside Diameter: 5.75 in (146 mm)
Vacuum Tubing Included: No
Weight: 0.95 lb (0.43 kg)
Product Box Length: 6.56 in (167 mm)
Product Box Width: 6.31 in (160 mm)
Product Box Height: 3.5 in (89 mm)

Customer Feedback      Be the first to review part 56-9158

The air filter was a perfect fit on my wife 2011 BMW 328i.
Ryan Wen, California
Replaced the stock BMW air filter with the BM-1113. Fits the 2013 R1200GS water-cooled engine. Great filter.
Scott, Lincoln, California
2011 Mazda6, 2.5 auto pulled 32 mpg from Fresno to San Diego, AC on, and hauling butt. I also have one in my 84 BMW 325e, 2.7 5spd. 30+ freeway, all day long.
Jay Smith, Fresno, California