What DieselCore does

DieselCore is a diesel core buyer, seller, and distributor based in the Houston area. A "core" is a used but rebuildable component, the kind of part a remanufacturer needs as raw stock, and DieselCore's business is finding those parts, buying them, grading them, and reselling them to the companies that remanufacture them. The company works across automotive, commercial-vehicle, and heavy-duty truck applications, with additional reach into agricultural and construction diesel.

The catalog spans both mechanical and electronic cores. On its buying and selling pages the company lists air compressors, air dryers, alternators, EGR coolers, electronic control modules, engines, FICM units, fan clutches, fuel injectors, injection pumps, high-pressure oil pumps, starters, steering gears, tuners, and turbochargers. Light-duty and heavy-duty engines are handled as full cores. The customer base is the remanufacturing channel: engine and parts remanufacturers, parts distributors, and fleet operators who want to keep serviceable components in circulation rather than scrap them.

DieselCore publishes its own grading rules under a core-criteria standard. Fuel injection pumps and high-pressure oil pumps must arrive in takeout condition, with no missing valves, solenoids, or plugs, no fire damage, and no signs of prior teardown. Turbochargers must have undamaged housings, no broken shafts or wheels, no excessive shaft play, and intact actuators and sensors. Damaged units can still carry partial value but need approval before shipment. That published standard, together with separate shipping guidelines for parcel and LTL freight, is how a core dealer sets expectations before a part changes hands. The company's stated mission, "Sustainability Is Core," frames the work as a circular economy play: reusing retired diesel components reduces the demand for newly manufactured parts.

Locations and expansion

DieselCore relocated its headquarters from Katy, Texas to a purpose-built facility at 2055 Discovery Hills Parkway in Brookshire, Texas in February 2024. According to the company's announcement, the new site runs about 70,000 square feet and combines corporate offices, warehousing, and disassembly operations under one roof. The company describes itself as operating three locations in Texas, including a facility in Gladewater in the eastern part of the state.

In November 2025, DieselCore moved to add its first location outside Texas. The Nevada Governor's Office of Economic Development approved $117,286 in tax abatements for a new North Las Vegas facility. Per the state's board materials and the City of North Las Vegas, the project carries a planned capital investment of about $1.22 million and a commitment to create 87 jobs at an average wage near $31.61 an hour within five years, with the state projecting up to $7.2 million in new tax revenue over a decade. The Nevada expansion is filed under the company's legal entity, Bombshelter Diesel Supply LLC, doing business as DieselCore.

Ownership and leadership

DieselCore is an independent, founder-led company. Justin Greenberg has served as President and CEO since the company's founding in 2010, following an earlier career in automotive dealership service and parts management. The company is a privately held LLC with no disclosed outside parent or institutional backing.

The Brookshire team is organized around the core trade itself, with named staff in operations, sales, purchasing, customer service, and logistics on the company's own site. Greenberg is also active in the broader supplier community: he holds a seat on the board of directors of MEMA, the association that represents motor and equipment suppliers to OEMs and the aftermarket, and the company describes itself as a member of several industry associations.

Recognition and industry standing

DieselCore has appeared on the Inc. 5000 list of America's fastest-growing private companies, an honor tied to multi-year revenue growth rather than size. The company does not publish audited financial figures; revenue estimates that circulate in data directories, generally in the range of roughly $7 to $9 million, are modeled numbers rather than reported ones and should be read that way. Headcount sits in the small-firm range, on the order of 25 to 50 people, consistent with a specialized brokerage and distribution operation rather than a manufacturing plant.

The company's position in the supply chain is worth stating plainly for buyers. DieselCore is a cores intermediary, not a certified remanufacturer. It does not post an ISO 9001 or IATF 16949 quality certificate, which is normal for a dealer whose value is sourcing and grading rather than production. Buyers evaluating DieselCore are assessing its ability to find and qualify hard-to-source cores at volume, and its published core criteria are the relevant quality reference. The Nevada expansion and repeated Inc. 5000 appearances point to a firm growing its footprint in a niche that supports nearshoring and domestic reman supply.

Frequently asked questions

What does DieselCore do?

DieselCore buys, sells, and distributes diesel cores, which are used but rebuildable components such as fuel injectors, injection pumps, turbochargers, EGR coolers, control modules, and engines. It supplies these cores to engine and parts remanufacturers, parts distributors, and fleet operators across automotive, commercial-vehicle, heavy-duty truck, agricultural, and construction applications.

Where is DieselCore located?

DieselCore is headquartered at 2055 Discovery Hills Parkway in Brookshire, Texas, in the Houston metro area, in a roughly 70,000-square-foot facility it opened in February 2024. The company operates three locations in Texas, including a site in Gladewater, and in November 2025 gained approval for a new facility in North Las Vegas, Nevada.

Who owns DieselCore?

DieselCore is an independent, privately held company founded in 2010 and led by President and CEO Justin Greenberg. Its legal entity is Bombshelter Diesel Supply LLC, doing business as DieselCore. There is no disclosed parent company or outside institutional owner.

Is DieselCore a remanufacturer?

No. DieselCore is a cores dealer and distributor, not a remanufacturer. It sources, grades, and supplies rebuildable cores to the companies that remanufacture them. Its published core criteria set the condition standards a part must meet for full credit.

What industry recognition does DieselCore have?

DieselCore has been named to the Inc. 5000 list of America's fastest-growing private companies. Its CEO, Justin Greenberg, serves on the board of directors of MEMA, the motor and equipment suppliers association, and the company describes itself as a member of several industry associations.

Last verified September 27, 2026. Is this your company? Request a correction.