Description
Polyurethane rear engine mount kit for International medium- and heavy-duty conventional trucks — ATRO MM55-62005-HT. The kit ships with two MM55-62004-HT polyurethane bushings, two MM55-629C7-HT mount brackets, and two bolt assemblies, replacing International / Navistar OEM 1664729C-series and 1664730C-series rear motor mounts. ATRO’s HT (high-temperature) elastomer compound resists heat fatigue and engine-bay underhood temps better than rubber.
Specifications
| Manufacturer | ATRO |
|---|---|
| Part Number | MM55-62005-HT |
| Part Type | Rear Engine Mount Kit (Polyurethane, High-Temp) |
| Position | Rear |
| Material | Polyurethane (HT high-temp compound) |
| Quantity Per Vehicle | 1 kit |
Kit Includes
- (2) MM55-62004-HT polyurethane bushings
- (2) MM55-629C7-HT mount brackets
- (2) Bolt assemblies
Cross References
This kit replaces or is equivalent to the following part numbers:
- International / Navistar: 1664729C1, 1664729C2, 1664729C3, 1664729C4, 1664729C5, 1664729C7, 1664730C5, 1664730C7, 20147772C2, 2014777C2, 3613279C2, 3613279C4
- Automann: M17445, M17445UB
- Gaff: 34510, 34525
Applications
Rear engine mount kit for International conventional trucks using the 1664729C / 1664730C-series mount platform. Verify mount style and the OEM number cast on the bracket against the cross-reference list before ordering.
HT polyurethane compound is firmer than the OEM rubber mount — expect slightly more cab vibration in exchange for longer service life and reduced engine roll under torque. Replace mounts in pairs.









