The Mack 20QE3336A or 20QE3336 shift knob and airline kit services Mack transmissions equipped with 2, 3, or 4 air line shift knobs. The kit replaces the three 3/16" airlines that run between the slave valve on top of the transmission and the shift knob, along with all fittings on the slave valve itself. Two 90-degree push-in style swivel fittings eliminate the need to remove the slave valve during installation, which protects synchronizers from the fitting over-tightening damage that can occur with original hardware. Simply push the airlines into the new fittings to complete the repair. The fourth port in the knob is for exhaust and can remain open or be routed below the cab floor. Shift knob features a gray thumb button. Call us to confirm proper fit for your application.
Interchanges:
- MACK 20QE3336
- MACK 25153039
Features
Fits Mack transmissions with 2, 3, or 4 air line shift knobs
Includes three 10-ft 3/16" airlines: red, black, and blue
Two 90-degree push-in style 3/16" swivel fittings for slave valve ports
One straight 3/16" push-in style fitting included
Swivel elbows allow installation without removing the slave valve, preventing synchronizer damage from over-tightening
Gray thumb button shift knob; kit also includes 9 colored pull ties
Tech Specs
- KIT CONTAINS:
- 10 ft. Red 3/16" airline
- 10 ft. Black 3/16" airline
- 10 ft. Blue 3/16" airline
- 2 - 90-degree push-in style 3/16" swivel fittings
- 1 - Straight push-in style 3/16" fitting
- 9 - Colored pull ties
- Shift knob: gray thumb button
- Compatible with Mack transmissions using 2, 3, or 4 air line shift knobs
