Dust cap Press On & Threaded · 1550 series

Slip yoke dust caps keep grit out of the splines. Press-on caps are sized by the yoke boss diameter; threaded caps by the thread size on the yoke. Match the series listed.
How to measure
capsealwasherFBCDEA
  • ASeries
  • BInside Dia
  • CSeal Od Id
  • DSeal Type
  • EWasher Od Id
  • FDiameter

Letters match the table columns. Not to scale. Measure the old part, or the mating part, before you order.

6 parts
AddPic Part # Price Series Type Inside Dia Seal Od Id Seal Type Washer Od Id Diameter Brand
5-86-68U Dust Caps Press On, Type Round, Shaft Neck Dia 1.625, Diamet 5-86-68U
$17.89
1550 Round - - - - 2.640 SPICER
D4JU Dust Caps Threaded, Type Round, Seal Type CORK, Inside Dia 2 D4JU
$25.92
1550 Round 2.225-R 2.203/1.406 CORK 2.125/1.422 - SPICER
D4KU Dust Caps Threaded, Type Spline, Seal Type CORK, Num Splines D4KU
$26.57
1550 Spline 2.225-R 2.205/1.726 CORK 2.125/1.778 - SPICER
D4LU Dust Caps Threaded, Type Round, Seal Type CORK, Inside Dia 2 D4LU
$44.77
1550 Round 2.969-R 2.953/1.910 CORK 2.906/1.969 - SPICER
D4MU Dust Caps Threaded, Type Round, Seal Type RUBBER, Inside Dia D4MU
$54.26
1550 Round 2.225-R 2.188/1.375 RUBBER 2.125/1.422 - SPICER
4-86-18U Dust Caps Press On, Type Round, Shaft Neck Dia 1.410, Diamet 4-86-18U
$56.95
1550 Round - - - - 2.460 SPICER