Driving Axle Differentials
Closed Pre-Solicitation Posted
This opportunity was awarded. See the award notice from , or the latest solicitation from .
- Solicitation number
- SPRDL1-20-R-0285
- Agency
- Land and Maritime Defense Logistics Agency, Department of Defense
- Responses due
- Set-aside
- No set-aside
Opportunity facts
- NAICS code
- 336350 Motor Vehicle Transmission and Power Train Parts Manufacturing
Notice details come from SAM.gov. Updated .
About this opportunity
This notice seeks offers for 64 rear differentials for High Mobility Multi-Purpose Wheeled Vehicles, with an option for 100%. The differentials will connect the transfer case or transmission to rear wheels via driveshaft. Defense Logistics Agency Land and Maritime seeks these differentials to distribute equal torque to wheels and permit turns. Offerors must be able to provide NSN 2520-01-574-4828, the water-cooled rear differential used on HMMWVs with serial numbers 300,000 or greater. Questions are due by September 3, 2020.
No set-aside will be used. The differentials fall under PSC 2920 and NAICS 336360. Potential offerors include AM General (CAGE 34623) and Dana Light Axle Manufacturing (CAGE 63ZH0), whose part numbers are listed. The base quantity is 64 differentials, with an option for 100% more. As the Government does not hold technical data or specifications for vendor-developed components, offerors must demonstrate their ability to meet all requirements.
Notice text
Item Name: Driving Axle Differentials
NSN: 2520-01-574-4828
Part Numbers: AM General, LLC (CAGE: 34623) P/N 6048217 or Dana Light Axle Manufacturing (CAGE: 63ZH0) P/N 2011412-1
Quantity: 64 (with 100% Option)
End Item: High Mobility Multi-Purpose Wheeled Vehicle (HMMWV)
Description: The rear differential connects to the transfer case or transmission via the driveshaft. This system lets the engine power transfer to the HMMWV's rear wheels. The differential distributes equal amounts of torque to both wheels. This permits the wheels to react to resistance or provide traction for vehicle turns.
NSN 2520-01-574-4828 is for the rear differential used in the HMMWV with a serial number of 300,000 or greater. HMMWVs with a 300,000 or greater serial number are also referred to as a Revision B model (Rev B). This designation is indicative of reliability improvements that were implemented into the HMMWV during production to restore some reliability and performance to the vehicle through automotive improvements. In this case, The Revision B rear differential is cooled by water provided from the engine coolant system whereas older models were cooled with oil or not cooled at all. The reason that this water cooled variant provides an improvement over previous iterations is that we tied the cooling system into the vehicle Radiator/Fan system which allows for greater heat rejection and prevents thermal soak of the cooling fluid. The improvements realized in this variation of the HMMWV differential have improved the vehicle reliability by lowering the operational temperatures of the differential fluid in the differential, driving axle which has a direct impact on the longevity of the component.
While there is a Government drawing for the Rear Differential, the drawing is not fully defined and does not include vendor developed components that were considered the intellectual property of the developer. As such, the Government does not have the technical data package (TDP), detailed drawings, or performance specifications for these items.
Notice history
| Notice | Type | Posted |
|---|---|---|
| Redacted Justification and Approval (J&A) | Limited / Sole Source Justification | |
| Driving Differentials | Award Notice | |
| Driving Differentials | Solicitation | |
| Driving Differentials | Pre-Solicitation | |
| Driving Axle Differentials | Pre-Solicitation |
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