The Mack 20QE3335A-3766 is a shift knob and airline kit designed to service Mack transmissions equipped with 2, 3, or 4 air line shift knobs. The kit replaces the three 3/16" air lines that run between the slave valve on top of the transmission and the shift knob, along with all fittings on the slave valve. Push-in style fittings eliminate the need to thread and torque connections by hand, which reduces the risk of over-tightening - a known cause of synchronizer damage on these transmissions. The shift knob includes a red thumb button. Note that the fourth port in the knob is an exhaust port; it can be left open or vented below the cab floor using one of the included lines. Call us to confirm fit for your specific Mack transmission.
Features
Fits Mack transmissions with 2, 3, and 4 air line shift knobs
Includes three 10-foot, 3/16" air lines in red, black, and blue
Two 90-degree push-in swivel fittings and one straight push-in fitting included
Push-in fitting design reduces risk of over-tightening and synchronizer damage
Shift knob features a red thumb button
9 colored pull ties included for routing and organization
Tech Specs
- KIT CONTAINS:
- 10' Red 3/16 air line.
- 10' Black 3/16 air line.
- 10' Blue 3/16 air line.
- 2- 90* 3/16 NEW push in style 90 degree swivel fittings.
- 1- Straight 3/16 NEW push in style fittings.
- 9- Colored pull ties
