Diesel Machine Service, Inc.

Diesel Machine Service, Inc., a small-business supplier based in Amherst, Wisconsin, provides automotive replacement parts and components to the Defense Logistics Agency (DLA) as a prime contractor (100% of awards), competing predominantly in full-and-open solicitations without set-aside designation, though roughly 30% of recent awards carry total-small-business set-aside markings. The company is organized as a for-profit Subchapter S corporation and operates exclusively in the federal automotive parts supply space, with no venture capital or private-equity backing evident in the source material.

Diesel Machine Service's customer concentration is absolute: the DLA accounts for all 388 awards in the source portfolio, with DLA Land and Maritime alone representing 242 awards ($6.5 million combined potential value, 83% of the vendor's $7.8 million combined potential across all awards). The remaining DLA buying offices—Aviation (89 awards, $492 thousand), Troop Support Construction and Equipment (48 awards, $814 thousand), and Troop Support Hardware (8 awards, $12 thousand)—and a single Department of the Navy Naval Supply Systems Command award round out the footprint. This concentration is decision-critical: the vendor has zero diversification outside DLA.

Diesel Machine Service holds two active indefinite delivery contracts with DLA Land and Maritime. The primary vehicle is a $1.9 million single-award IDC (SPE7LX23D0107, running through August 2027) for Bendix air brake evaporators and related automotive components; it has generated ten task orders ranging from $40,425 to $124,735. The second is a $250,000 single-award IDC (SPE4A615D5205, completed September 2023) for 24-volt air dryers; it generated 15 orders spanning $3,547 to $72,000. Representative recent delivery orders include a $125,781 January 2026 award for air brake evaporators (DLA Land and Maritime), a $117,795 October 2025 order for air brake evaporators, and a $78,295 June 2025 award for the same component. The vendor also competes under smaller DLA IDCs for EVERFLOW modules, air cleaner intakes, generators, motor armatures, dehydrator cartridges, and exhaust components, capturing sustained task order volume at contract values typically under $100,000.

Activity has contracted significantly in recent years. The source shows 21 awards in 2022, declining to 4 in 2025 and 1 in 2026 year-to-date. This trajectory, coupled with DLA's reliance on mature single-award IDCs and smaller purchase orders, signals a mature supplier relationship that has narrowed rather than expanded. The vendor has obligated $4.7 million of its $7.8 million combined potential value (61% realization), suggesting ongoing order flow but no recent expansion of vehicle ceilings or customer base. No recompete cliff data is provided; however, the expiration of the 24-volt air dryer IDC in September 2023 (now past) and the $1.9 million evaporator vehicle's August 2027 completion represent material recompete exposure in the near term.

The vendor's NAICS and PSC profile is tightly defined around motor vehicle electrical and electronic equipment (72 awards), ball and roller bearings (63 awards), motor vehicle brake systems (26 awards), and engine electrical components (63 awards under PSC 5805-00). No subcontract footprint, no parent GWACs or GSA Schedules, and no work outside DLA logistics supply. The vendor is a single-commodity specialist with a single customer, competing on price and supply-chain responsiveness in a highly commoditized parts procurement environment where DLA uses multiple single-award IDCs to manage risk and maintain inventory discipline across its global logistics network.