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SKP SK404021 Locking HubOE Quality 60-Day Returns
Part #: SK404021

SKP SK404021 Locking Hub

42 vehicles fit this part
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Jeep, CJ5 and CJ7
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SKP Locking Hub for Jeep CJ5 and CJ7

The SKP Locking Hub gives Jeep owners a manual way to switch between two-wheel drive and four-wheel drive. It is built for drivers who want better highway fuel economy when 4WD is not needed and dependable traction when the trail gets rough.

Compatible with 1972-1980 Jeep CJ5 and 1976-1980 Jeep CJ7 applications, SK404021 is a direct driveline service part for classic Jeep axle setups.

  • Manual locking hub for on-demand 4WD engagement
  • Supports 2WD operation for improved fuel economy during normal driving
  • Built with rugged materials for off-road and utility use
  • Fits Jeep CJ5 and Jeep CJ7 applications across the listed years
  • SK404021 cross-references AVM402HP for the same application

How This Hub Works

This locking hub is used at the front axle to connect or disconnect the wheel hub from the driveline. On Jeep CJ5 and Jeep CJ7 models, that means the driver can manually select when the front axle is engaged, which helps reduce driveline drag in 2WD and restores front-wheel traction when four-wheel drive is needed. The SKP SK404021 is a practical replacement for worn, sticking, or damaged manual hubs on older Jeep driveline systems.

Common Problems It Can Address

  • Front hubs that no longer lock or unlock cleanly
  • Loss of manual 4WD engagement at the wheel hub
  • Excess driveline drag from hubs that stay engaged
  • Noise or wear caused by damaged hub components
  • Reduced traction control on dirt, snow, or uneven terrain

Installation Notes and Tips

Verify axle and hub compatibility before installation on your Jeep CJ5 or Jeep CJ7. Clean the mounting surfaces, inspect related front axle components, and confirm the hub operates smoothly after installation. Follow the vehicle service procedure for proper torque and engagement checks.

Quality Assurance

SKP manufactures this locking hub as a durable replacement part for classic Jeep driveline service. Part number SK404021 is intended for the listed CJ5 and CJ7 fitments and is cross-referenced to AVM402HP for the same application.

This part fits 42 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1980JeepCJ54.2LL6N/A
1980JeepCJ55.0LV8N/A
1980JeepCJ52.5LL4N/A
1980JeepCJ74.2LL6N/A
1980JeepCJ75.0LV8N/A
1980JeepCJ72.5LL4N/A
1979JeepCJ54.2LL6N/A
1979JeepCJ55.0LV8N/A
1979JeepCJ74.2LL6N/A
1979JeepCJ75.0LV8N/A
1978JeepCJ54.2LL6N/A
1978JeepCJ55.0LV8N/A
1978JeepCJ53.8LL6N/A
1978JeepCJ74.2LL6N/A
1978JeepCJ75.0LV8N/A
1978JeepCJ73.8LL6N/A
1977JeepCJ54.2LL6N/A
1977JeepCJ55.0LV8N/A
1977JeepCJ53.8LL6N/A
1977JeepCJ74.2LL6N/A
1977JeepCJ75.0LV8N/A
1977JeepCJ73.8LL6N/A
1976JeepCJ54.2LL6N/A
1976JeepCJ55.0LV8N/A
1976JeepCJ53.8LL6N/A
1976JeepCJ74.2LL6N/A
1976JeepCJ75.0LV8N/A
1976JeepCJ73.8LL6N/A
1975JeepCJ54.2LL6N/A
1975JeepCJ55.0LV8N/A
1975JeepCJ53.8LL6N/A
1974JeepCJ53.8LL6N/A
1974JeepCJ55.0LV8N/A
1974JeepCJ54.2LL6N/A
1973JeepCJ53.8LL6N/A
1973JeepCJ55.0LV8N/A
1973JeepCJ54.2LL6N/A
1973JeepCJ52.2LL4N/A
1972JeepCJ53.8LL6N/A
1972JeepCJ55.0LV8N/A
1972JeepCJ54.2LL6N/A
1972JeepCJ52.2LL4N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

AVM402HP

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.

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