QU40231 Spicer Hub Sealing Lock Washer is a concave, replacement washer that functions as a seal to prevent moisture from entering the hubs via the mounting bolts and as a lockwasher to keep QU40257 Hub Bolts at the proper torque. USA Made. Uses 6 per side. Sold Individually.

Need More Info? Use the handy Links below to access over 40 years of Dan’s product and vehicle specific Tech Notes to easily get the information you need for your vehicle’s repair, maintenance, or upgrade project!

Dan the Gear Man Tech Notes:
Thickness
Install
Matching Parts
Applications

Tech Note 1: Thickness
The thickness, sealing function, and outside diameter of these washers makes them the only suitable washer for 6 bolt external mount Spicer factory plastic dial hubs.

Tech Note 2: Install
Install washer so convex side is against bolt head.

Tech Note 3: Matching Parts
QU40257Hub Bolt

Applications:
Chevy/GMC 3/4 ton 4×4
K20, K25: 1970, 1971, 1972, 1973, 1974, 1975, 1976

Ford F-250 3/4 ton 4×4:
Closed Knuckle Dana 44HD 3500# Axle: 1972, 1973, 1974, 1975
Open Knuckle Dana 44 Axle with 6 Bolt External Mount Spicer Hub: 1976, 1977, 1977.5
Crew Cab with Dana 60 Closed Knuckle Axle: 1973, 1974, 1975