28--ENGINE,DIESEL, IN REPAIR/MODIFICATION OF
DEPT OF DEFENSE.DEPT OF THE NAVY.NAVSUP.NAVSUP WEAPON SYSTEMS SUPPORT.NAVSUP WSS PHILADELPHIA.NAVSUP WEAPON SYSTEMS SUPPORT · Response deadline: Mon, 09 Nov 2026
What the government is buying
The Navy is seeking to modify or repair a diesel engine through NAVSUP Weapon Systems Support Philadelphia. The Defense Logistics Agency's procurement classification points to work under Federal Supply Class 2815, covering engine-related services rather than a simple parts purchase.
NAICS 333618 indicates this is classified under "Other Engine Equipment Manufacturing." In federal contracting, this code captures establishments that manufacture engines and related equipment not elsewhere classified—including diesel engines and their modification or overhaul work for military applications.
Given the repair/modification scope, this likely involves depot-level maintenance, engineering changes, or remanufacturing of a specific diesel engine variant used in naval platforms. Common applications for this type of work include marine propulsion engines, auxiliary power units, or generator sets aboard surface ships and submarines. see the solicitation for the specific engine model, quantity, and technical requirements.
Key facts
| Attribute | Value |
|---|---|
| Agency | Department of the Navy, NAVSUP Weapon Systems Support Philadelphia |
| Notice type | Solicitation |
| Solicitation number | N0038326QPD19 |
| NAICS | 333618 |
| Set-aside | None—full and open competition |
| Response deadline | November 9, 2026, 4:30 PM ET |
| Place of performance | see the solicitation |
Who can bid
This is a full and open solicitation with no set-aside restriction. Small and large businesses alike may compete, including:
- Small manufacturers with capabilities in engine overhaul or remanufacturing
- Diesel engine specialists holding relevant OEM authorizations or technical data rights
- Repair facilities with experience in military specification (MIL-SPEC) engine work
- Engineering services firms capable of modification design paired with production execution
Vendors should verify their size standard against SBA's table for NAICS 333618. Prior experience with Navy technical data packages, military quality systems (such as ISO 9001 or AS9100 alignment), and familiarity with NAVSUP WSS contracting processes will strengthen competitiveness.
Because no set-aside applies, small businesses compete directly with established defense contractors. Consider whether teaming or subcontracting arrangements could enhance technical reach while preserving your competitive position.
How to put together a competitive bid
Confirm technical data access. Engine modification requires complete drawing packages, specifications, and depot maintenance instructions. Determine whether these come with the solicitation or require a separate request to the Navy's technical data repository.
Assess tooling and facility requirements. Diesel engine overhaul demands precise measuring equipment, dynamometer testing capability, and clean assembly environments. Verify your facility can handle the specific engine class and any Navy inspection witness requirements.
Build realistic cost and schedule estimates. Repair/modification work carries technical discovery risk. Structure your proposal with clear assumptions about condition assessment protocols, parts replacement thresholds, and engineering change processing.
Demonstrate quality history. NAVSUP WSS evaluates past performance rigorously. Include relevant CPARS or contractor performance ratings, especially from similar engine programs. Highlight any Navy Master Repair Agreements or Depot Source of Repair validations.
Address logistics explicitly. Engine work involves transportation of heavy, sensitive equipment. Detail your packaging, shipping, and tracking procedures for military freight movements.
Review contract clauses carefully. Navy supply contracts typically incorporate DFARS provisions, special tooling requirements, and government property accounting. Ensure your compliance infrastructure can manage these obligations.
Next steps
Read the complete solicitation on SAM.gov using solicitation number N0038326QPD19. The full notice contains the statement of work, technical specifications, deliverables schedule, pricing structure, and all required clauses.
Critical deadline: Proposals are due November 9, 2026, at 4:30 PM Eastern Time. Allow ample time for SAM registration validation, document preparation, and electronic submission through the designated system.
View the official notice on SAM.gov →