Meritor MTIS Retrofit Kit 31975-22S or 3197522S is a genuine Meritor Tire Inflation System (MTIS) retrofit kit designed for tandem axle applications. Compatible axle types include Meritor TP, TB (1998 and later), WP, Straight Spindle, Ingersoll F24 (2.75 inch), Hendrickson HP (2.75 inch, Straight Spindle), and SAF Holland axles. Configured for single tires on wheels greater than 17.50 inches, standard thru-tee length, and without ThermALERT. This kit does not include a hub cap and does not require an MTIS-prepped axle, making it a straightforward retrofit for non-prepped tandem axle setups. Call us to confirm proper fit for your specific axle configuration.
Features
Meritor Tire Inflation System (MTIS) retrofit kit for tandem axle applications
Compatible with Meritor TP, TB (1998 and later), WP, and Straight Spindle axles
Also fits Ingersoll F24 (2.75 inch) and Hendrickson HP (2.75 inch, Straight Spindle) axles
SAF Holland axle compatibility included
Configured for single tires on wheels greater than 17.50 inches, standard thru-tee length
No MTIS-prepped axle required; does not include hub cap; without ThermALERT
