Number One Skull

H-D '83-later (except VRSC, '04-'10 XL1200L & XL1200C, XL1200V, '08-later XR, all FXD and FXDX, '05-'06 FXDC, all FXR with plastic fuel cap, FXS, Electra Glide, Tour Glide and all fuel caps with gauges).

Twin Cam '99-'17

Sportster '04-later XL, XR & earlier H-D with horizontal holes on timer cover

Softail 00-18 (excl. FLSB), Dyna 99-17, Touring 07-15 (excl. Narrow-Profile Outer Primary Cover)

Sportster XL 04-20

Touring & Trike 11-16 with Twin Cam 103

Softail 00-15 (excl. FLS/S, FLSTSB & FXS) , Touring/Trike 99-13, Dyna 99-08 & Evo 1340 with original aircleaner cover or Screamin Eagle Stage I

Softail '18-later & Touring '17-later

Softail 16-17 (except FLSTFBS), Touring & Trike 14-16 with Original Equipment Air Cleaner Cover (excl. CVO)

Electra Glide, Street Glide, Ultra Limited, Road Glide & Trike '08-later with center fill

'17-later Touring & Trike with Original Equipment air cleaner cover (Does not fit CVO)

Touring/Trike '16-later & Narrow Profile Primary Cover