Description
Front engine mount kit for International-Navistar Class 8 conventional cab trucks, replacing International 1664724C1, 1664724C2, 1664724C3, and Automann M17450. ATRO MM55-62002-HT pairs upper and lower high-temperature polyurethane mounts with M16 mounting hardware, delivering improved resistance to heat, oil, and grease compared with standard rubber mounts.
Signs You Need a New Engine Mount
- Excessive engine vibration felt through the cab, floor, or steering column
- Clunking or knocking when accelerating, decelerating, or shifting under load
- Visible cracking, splitting, or collapse of the mount block
- Engine sits low or shifts position relative to the frame rails
- Oil saturation or chemical attack on the mount material
Specifications
| Manufacturer | ATRO Engineered Systems |
|---|---|
| Part Number | MM55-62002-HT |
| Part Type | Front Engine Mount Kit with Hardware |
| Material | High-Temperature Polyurethane |
| Position | Front (upper and lower mount pair) |
Kit Includes
- Lower engine mount — ATRO MM55-624C3-HT (qty 1)
- Upper engine mount — ATRO MM55-626C2-HT (qty 1)
- M16-2.0 x 90mm hex bolt (qty 1)
- M16 flat washer (qty 1)
- M16-2.0 flanged locknut (qty 1)
Cross References
This kit replaces or is equivalent to the following part numbers:
- International: 1664724C1, 1664724C2, 1664724C3, 1664724C4, 1664726C2, 1664726C5, 3643103
- Automann: M17450, M17450UB
- Fortpro: F306939
Applications
This front engine mount kit fits the following International-Navistar conventional cab platforms (chassis-based fitment; engines vary by truck spec):
- International 2500, 2600, 3400–3900 series
- International 5500, 5600i, 5900 series
- International 8100, 8200, 8300 series
- International 9100, 9200, 9400, 9400i, 9700, 9800, 9900, 9900i series
- International LoneStar, PayStar, ProStar, WorkStar
Verify your truck model and existing mount part number before ordering to confirm fitment.









