ONE UPPER AND ONE LOWER MOTOR MOUNT BUSHING FOR MULTIFUEL ENGINES IN MOST 2.5 TON AND SOME 5 TON TRUCKS. 

THESE WILL FIT ANY MOUNT POSITION FOR THE ENGINE. YOU WILL NEED A QUANTITY OF 4 OF THESE SETS TO COMPLETE AN ENTIRE ENGINE. 

PART # 7538640 NSN 5342-00-753-8640, 5340007538640

PART # 7538641 NSN 5342-00-753-8641, 5340007538641