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Custom Assemblies > Custom Assembly

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K&N Custom 66 Series® custom air cleaner assemblies are designed for use with any engine that uses a round element air cleaner housing. They incorporate our famous K&N Air Filters and provide serious air flow. Each complete assembly comes with base, element, top plate and stud. [MORE]
Available Information
Installation Instruction Sheet

Part 66-5090 Product Specifications
Product Style: Custom Assemblies
Air Filter Shape: Round
Color: Red
Filter Height: 4 in (102 mm)
Filter Material: Cotton Gauze
Neck Flange: 5.125 in (130 mm)
Overall Height: 4.625 in (117 mm)
Replacement Filter: E-3750
Size: 14 Inch
Style: 1-1/4" Drop Base
Top Material/Finish: Aluminum
Top Style: 5 Spoke Billet Aluminum
Total Height: 4.625 in (117 mm)
Weight: 9.8 lb (4.5 kg)
Product Box Length: 15.38 in (391 mm)
Product Box Width: 15.38 in (391 mm)
Product Box Height: 6.75 in (171 mm)

99-5050 - Filter Care Service Kit - Squeeze
E-3750 - Replacement Filter

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