Meritor M12127645 Differential Side Gear
The Meritor M12127645 Side Gear, also shown in Meritor cataloging as M12-127645, is a heavy-duty inter-axle differential side gear used in select tandem drive axle assemblies. Meritor identifies the component as a “Differential – Side Gear,” while aftermarket cataloging describes it as the rear IAD side/output gear for DS404/344-related applications.
Product details
| Specification | Detail |
|---|---|
| Manufacturer / Brand | Meritor / Mach |
| Part Number | M12127645 |
| Meritor Catalog Number | M12-127645 |
| Product Type | Differential side gear / output gear |
| Application | Inter-axle differential |
| Position | Rear IAD side gear |
| Listed Application | DS404-344 input shaft / inter-axle differential |
| Industry Number | 127645 |
| VMRS | 022-003-048 |
| UPC | 884879727271 |
| Listed Width | 5.35 in. |
| Listed Height | 5.35 in. |
| Unit of Measure | Each |
The Meritor M12127645 Differential Side Gear is designed for use within the inter-axle differential of compatible heavy-duty tandem axle systems. The gear helps transmit torque through the inter-axle differential while allowing the forward and rear drive axles to rotate at different speeds when operating conditions require it.
This side gear is associated with DS404/344-type axle and inter-axle differential configurations and is cataloged as the rear IAD side gear. Because side gears operate under substantial torque and repeated load cycles, correct tooth geometry, spline engagement, and fit within the differential assembly are critical to reliable drivetrain operation.
Cross-references
- Meritor M12127645
- Meritor M12-127645
- TDAM12127645
- Dana / Spicer 127645
- Euroricambi 24171040
- PAI 96240
- PAI EE96240
- World American WA22234
- Volvo 3945999
- Mack 2719-127645
- Automann 2719127645
Relationship to Dana Spicer 127645
The Meritor M12127645 is directly cross-referenced in multiple heavy-duty catalogs to the industry number 127645, including Dana/Spicer 127645. Meritor/Mach itself identifies 127645 as the industry number for M12127645.
