Meritor 31314-21 MTIS Tire Inflation System Stator & Filter

Meritor 31314-21 MTIS Tire Inflation System Stator & Filter Assembly | 4-Pack | 10.5 Inch, 1/4 in. NPT | Threads into Spindle Plug | Replaces 3131421, TDA3131421, 85106042
- FULL TANDEM AXLE SERVICE KIT — This 4-pack of genuine Meritor 31314-21 Stator and Filter Assemblies covers all four wheel ends on a standard tandem axle semi-trailer or truck, making it the ideal quantity for a complete MTIS service. Designed for use with Meritor Tire Inflation Systems (MTIS) and PSI wheel-end tire inflation systems on commercial trucks, semi-trailers, and heavy-duty fleet vehicles.
- EXACT-FIT SPECIFICATIONS — Each assembly measures 10.50 inches in length with a 1/4 in. NPT thread and installs by threading directly into the spindle plug. The stator serves as the stationary air channel that routes pressurized air from the vehicle's air supply through the rotating wheel-end assembly and into the tire — without interrupting hub rotation. 4 identical units included.
- INTEGRATED FILTER INCLUDED ON EACH UNIT — Every stator in this pack ships as a complete assembly with the built-in filter element included. The filter traps contaminants before they can enter the tire inflation air path, helping protect pressure control valves and downstream MTIS components. Replacing all four at the same service interval keeps your system performing consistently across every wheel position.
- BROAD CROSS REFERENCE COMPATIBILITY — Each unit in this 4-pack replaces 3131421, 650-3131421, TDA31314-21, TDA3131421, 8235-3131421, 82353131421, M3131421, 85106042, MTR31314-21, ATI3131421, HR3131421, ME3131421, MER3131421, RI3131421, RO3131421, RW3131421, TWD3131421, and 177T14211. Always verify your existing part number or system model before ordering.
- TRUSTED BY FLEETS — Meritor has supplied drivetrain, braking, and tire inflation solutions to the commercial vehicle industry for over 110 years. Buying this 4-pack means you have the right quantity on hand for a full axle service, reducing downtime and repeat sourcing trips during scheduled maintenance. VMRS Code: 017-009-006. Individual unit UPC: 680502126387.
Country USA
Brand Meritor Genuine
Manufacturer Meritor Genuine
ItemPartNumber MERITOR-31314-21
Model 31314-21
Warranty 2 Year Manufacturer
UnitCount 4
ReleaseDate 0000-00-00

Country	USA
Brand	Meritor Genuine
Manufacturer	Meritor Genuine
ItemPartNumber	MERITOR-31314-21
Model	31314-21
Warranty	2 Year Manufacturer
UnitCount	4
ReleaseDate	0000-00-00

Meritor 31314-21 MTIS Tire Inflation System Stator & Filter Assembly | 4-Pack | 10.5 Inch, 1/4 in. NPT | Threads into Spindle Plug | Replaces 3131421, TDA3131421, 85106042

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