IFS Chevy, GMC 6-Lug, 8-Lug 4x4 Perm Lok

4x4 Poi-Lok offers the Perm-Lok to permanently engage the Central Axle Disconnect (CAD) system and couple both front axles. This will prevent the front axles from pulling until the transfer case is engaged. This system is ideal for fleet operators and emergency vehicles.

• 4x4 Posi-Lok reduces front differential wear and right axle breakage.
• 4x4 Posi-Lok provides 2-wheel drive low range, giving the vehicle 4-LO torque at the rear axle with bind free steering only available in 2-HI. This feature is not available with factory systems and is beneficial when maneuvering trailers.
• 4x4 Posi-Lok will not disengage when ignition is turned off or the differential is submerged.
• 4x4 Posi-Lok is compatible with manual or electric transfer cases and installation can be completed in one to two hours with basic hand tools. No internal differential work is required.