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K&N replacement air filter elements
For 45CI models
Fits Buell models
For Sportster models
For Big Twin models
For aftermarket air cleaners
For V-Rod models
- 233776 Fits the round air cleaner on all 1941 thru 1966 Big Twins with a 2” wide original equipment filter
Fits Buell models
- 733797 Fits Buell Thunderbird S3 and S3T 1997 thru 2002
- 733799 Fits Buell XB models 2002 thru 2007
For Sportster models
- 233777 Fits the oval air cleaner on 1966 thru early 1973 and 1983 thru 1985 Sportster models with 2 5/8" wide element (OEM 29036-72T)
- 233778 Fits the oval air cleaner on Sportster models 1973 thru early 1975 with 3" wide stock filter (OEM 29086-73T)
- 233779 Fits the oval air cleaner on Sportster models late 1975 thru 1978 (OEM 29036-75T)
- 233780 Fits the "Ham Can" air cleaner on 1979 thru 1982 Sportster models with 3 1/2" wide stock element (OEM 29255-78TA)
- 233781 Fits the stock round air cleaner on all 1984 and 1985 Evolution Sportster models (OEM 29259-83TA)
- 233782 Fits the stock oval air cleaner on 1986 thru 1987 Evolution Sportster models (OEM 29036-86T)
- 233797 Fits the stock oval air cleaner on US Sportster models 1988 thru 2003, International models 1988 thru 1994 (OEM 29036-88)
- 233531 Fits the stock air cleaner on European Sportster models 1995 thru 2003 (OEM 29325-95)
- 733795 Fits the stock air cleaner on Sportster models 2004 to present (OEM 29331-04)
- 733798 Fits Screamin’ Eagle air cleaner assembly on Sportster models 2004 to present (OEM 29044-04B)
For Big Twin models
- 233776 Fits the round air cleaner on all 1941 thru 1966 Big Twins with a 2” wide original equipment filter (OEM 29036-41TA)
- 233777 Fits the oval air cleaner on 1967 early 1975 FX/FL models with 2 5/8” wide element (OEM 29036-72T)
- 233778 Fits the oval air cleaner on FL/FX models 1975 thru early 1978 with 3” wide stock filter
- (OEM 29086-73T)
- 233779 Fits the oval air cleaner on all FL/FX models 1977 thru early 1978 (OEM 29036-75T)
- 233780 Fits the “Ham Can” air cleaner on late 1978 thru 1984 FL/FX models, 1982 thru 1983 FXR models and 1980 thru 1982 FLT models with 3 1/2” wide stock element (OEM 29255-78TA)
- 233781 Fits the stock round air cleaner on Evolution Big Twin models 1984 thru 1985 (OEM 29259-83TA)
- 233783 Fits the stock round air cleaner on all Evolution Big Twins 1986 thru 1989 (OEM 29259-86T)
- 233798 Fits the stock round air cleaner on all carburetor equipped Evolution Big Twins 1990 thru 1994 (OEM 29259-91A)
- 233531 Fits the stock air cleaner on European Evolution Big Twin models 1995 thru 1999 (OEM 29325-95)
- 233826 Fits the stock round air cleaner on all EFI (fuel injection) equipped Evolution Big Twins 1995 thru 1998 (OEM 29291-95)
- 237769 Fits the stock oval air cleaner on carburetor equipped Twin Cam models 1999 thru 2006 and Fuel Injected Twin Cam models 2002 to present, except 2008 and later Dyna, FLH and FLT series models (OEM 29461-99)
- 733802 Fits the stock comma-shaped air cleaner on Fuel Injection equipped Twin Cam Dyna models 2008 to present (OEM 29191-08)
- 701207 Fits stock oval air cleaner on Fuel Injection equipped Twin Cam FLH and FLT models 1999 thru 2001 (OEM 29462-99)
- 733801 Fits stock oval air cleaner on Fuel Injection equipped Twin Cam FLH and FLT models 2008 to present (OEM 29633-08)
- 733796 Fits Twin Cam models 1999 to present equipped with Screamin’ Eagle air cleaners (OEM 29442-99A)
For aftermarket air cleaners
- 233787 Replacement filter for S&S teardrop air cleaners (except shorty) (OEM 29282-89T)
- 233794 Fits S&S teardrop air cleaner Super E and G (shorty)
- 233759 Fits all Zodiac and other aftermarket teardrop style air cleaners
For V-Rod models
- 733794 Fits the stock air cleaner on all V-Rod models from 2002 to present
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