Motor Vehicle Parts (Used) Merchant Wholesalers — U.S. Industry Primer (NAICS 42314)

A rollup primer. This NAICS industry (5-digit code 42314) contains exactly one child industry (6-digit code 423140), so the two levels describe the same business. This page gives the level's ground-truth federal figures and the essentials; for the full treatment — economics, named companies, regulation, risks — see the 423140 primer.

1. Overview

NAICS 42314 is the used and recycled auto-parts business: firms that buy wrecked, totaled, and end-of-life vehicles, pull the reusable parts (engines, transmissions, doors, fenders, lamps, electronic modules), and sell them wholesale — mostly to collision and mechanical repair shops [2]. It is the professional side of the salvage yard. (NAICS is the North American Industry Classification System, the federal framework used to define and count industries.)

Why it matters to investors: recycled parts typically cost 20% to 80% less than new equivalents [1], so demand rises whenever repair bills, new-car prices, or the average age of the vehicle fleet rise — all of which they have. It is a real-asset, cash-generative business (land, inventory, scrap metal) that is quietly consolidating. Public ways in are few and imperfect, and got fewer in 2025 as two of the sector's listed exposures moved into corporate or private-equity hands (Section 4). The center of gravity is private, family-owned recyclers. Both public-market and private investors can get exposure, but private operators arguably have the more direct route (see Section 10 and the child primer).

2. What's inside — and why this level equals its one child

A 5-digit NAICS industry can hold several 6-digit national industries. This one holds just one: 423140, Motor Vehicle Parts (Used) Merchant Wholesalers. When a 5-digit code has a single child, the U.S. classification system carries the same definition, the same firms, and the same federal statistics straight through — there is nothing at 42314 that is not also at 423140. So this is a pass-through level: everything below is a compressed version of the child page.

The code covers establishments that (a) wholesale used motor-vehicle parts and (b) dismantle vehicles to sell the parts; merchant wholesalers normally take title to the goods they sell [2]. Two business models dominate: full-service recyclers (staff dismantle, warehouse, and deliver parts to shops) and self-service "pull-your-part" yards (customers pull their own parts) — though a good deal of self-service volume is retail rather than wholesale and so should not automatically be counted here. Ownership is mostly small, independent, and privately held, with a thin layer of national consolidators on top. Adjacent codes that look similar but are counted elsewhere include 423930 (dismantling vehicles for scrap metal — many salvage operations straddle both codes), 423130 (used tires and tubes), 423110 (whole-vehicle wholesaling, where salvage auctions largely sit), and 441330 (used parts sold retail to consumers) [2]. The collision shops in 811121 are this level's customers, not its competitors — details in the child primer.

3. Size (this level's rollup figures)

Because 42314 equals 423140, the federal figures for the two are the same. These are our ingested ground-truth stats for the 5-digit level (U.S. Census Bureau):

CR4/CR8/CR20/CR50 are the shares of industry receipts held by the largest 4, 8, 20, and 50 firms; HHI (the Herfindahl-Hirschman Index) is the standard concentration gauge, where higher means more concentrated.

Two establishment counts, not a contradiction. The 2022 Economic Census counted 1,341 firms running 1,768 employer establishments [3]; County Business Patterns counted 1,805 a year later [4]. Different programs and different years — but both say the same structural thing: more locations than firms, because the largest players run many yards.

Unusually detailed margin data for a narrow code. The Economic Census margin-and-profit table gives this level a rare look at wholesale economics: against $10.121 billion of sales on own account, the industry reported $5.395 billion of purchases and $5.253 billion of cost of goods sold, for a Census-defined gross margin of $4.867 billion (48.1% of sales); after $2.427 billion of operating expenses, Census-defined gross profit was $2.440 billion (24.1% of total revenue) [5]. That last measure is gross margin plus commissions received less operating expenses — not GAAP net income or EBITDA. The high gross margin is the signature of buying a whole vehicle once and selling it in dozens of pieces (Section 5).

Undercount / scope caveat — important here. The ~$10.1 billion federal receipts figure covers employer businesses classified specifically in this code. Industry trade sources put the broader auto-recycling economy at roughly $32 billion in annual sales across 9,000-plus locations employing 140,000-plus people [1]. The gap is mostly definitional, not error: the wider figure also captures scrap-metal sales (counted in 423930), retail sales to consumers (441330), whole-vehicle salvage, and a long tail of very small or non-employer operators that the narrow code misses — and small, individually owned yards are exactly the operators most likely to fall outside the employer count. Read the ~$10.1 billion as "wholesale used-parts distribution by employer firms," and the $25–32 billion trade estimates as "the whole recycling value chain." Both are true; they measure different boxes.

4. Investable universe (where value concentrates)

With only one child industry, there is nothing to weigh across siblings — all the value sits in 423140. There is no large, pure-play public "used auto parts wholesaler." The closest public exposures are one diversified distributor with a major recycled-parts arm — LKQ Corporation (NASDAQ: LKQ), whose North America wholesale segment ran roughly $5.65 billion of revenue and $814 million of segment EBITDA in 2025 [7] — and two salvage-auction operators one step upstream that supply the yards: Copart (NASDAQ: CPRT), at about $4.2 billion of revenue and $1.4 billion of net income in fiscal 2024 [8], and RB Global, which owns IAA/Insurance Auto Auctions (NYSE: RBA), at about $4.59 billion of total revenue in 2024 [9]. Neither auction operator is in this code; they sell the car, not the parts.

The listed set shrank in 2025. LKQ sold its self-service segment in September 2025 to an affiliate of Pacific Avenue Capital Partners at a stated enterprise value of $410 million [7], and Radius Recycling — parent of the Pick-n-Pull self-service chain — ceased to be a standalone U.S. public company when Toyota Tsusho acquired it in July 2025 [10]. Toyota Tsusho (TSE: 8015) now offers only indirect, heavily diluted exposure. The overwhelming majority of the industry remains private: thousands of independent recyclers, PE-backed consolidators such as Fenix Parts (a former public roll-up, now owned by Stellex Capital, with more than 34 locations [11][12]), self-service chains, and the dominant parts-locating network Car-Part.com. Company-by-company detail, revenue splits, and the private-market map are in the child primer, Section 4.

5. How the money works

The unit of economics is the vehicle. A recycler buys a total-loss or end-of-life car, then monetizes it in layers: sellable parts (the profit engine — one car yields dozens of resalable parts, so a single purchase price is spread across many sales; engines and transmissions are among LKQ's largest North American SKUs [7]), rebuildable cores sold to remanufacturers, catalytic converters sold for their platinum/palladium/rhodium content, and scrap metal as a commodity-priced floor. Those last two layers swing hard and independently: in 2025 LKQ's average rhodium, platinum, and palladium prices rose 40%, 38%, and 20% year over year while its average scrap price fell 9% [7].

Operators watch revenue per vehicle, vehicle-acquisition cost, inventory fill rate and turns, and delivery density. Acquisition cost is the biggest swing factor — most wholesale recycled inventory comes through third-party auctions, generally without long-term contracts, and extra dismantler, rebuilder, and export bidders can bid the raw material up [7]. This is a distribution business, so margins are thinner than retail and profit comes from volume, mix, and buying vehicles well — receipts of ~$10.1B on ~25,800 workers is roughly $393k of revenue per employee [3][4], even though the piece-out model produces the 48.1% gross margin shown in Section 3 [5]. Full mechanics are in the child primer, Section 5.

6. Demand drivers

• Aging vehicle fleet — the average U.S. light vehicle hit a record 12.8 years old in 2025 and is expected to keep climbing [13]; older cars leave warranty and get repaired with cheaper parts.
• Miles driven — U.S. vehicles traveled 3.294 trillion miles in 2024 [14]; mileage, weather, and catastrophes convert into both parts demand and salvage supply.
• Repair-cost and new-part inflation — pushing insurers and shops toward recycled and alternative parts; LKQ has cited alternative-parts utilization near a record ~40% in early 2026 [15].
• Insurer acceptance of recycled parts on out-of-warranty vehicles — and the fleet skews that way: CCC reported that more than 70% of 2024 total-loss valuations involved vehicles at least seven years old [16].
• Total-loss volumes — expensive sensors and ADAS (advanced driver-assistance systems) make more repairs uneconomic, feeding more salvage vehicles into supply.
• Catastrophes (hail, floods, hurricanes) that produce lumpy salvage surges.
• Commodity prices — scrap-steel and precious-metal prices set a floor and a swing factor on per-vehicle economics.

The cycle is not cleanly pro- or counter-cyclical: rising repair costs and falling used-car values push insurers to total more vehicles, which lifts salvage supply while shrinking repairable claims. Independent forecasters expect the recycled-parts market to grow at roughly 8% a year — from about $17.4 billion in 2024 toward ~$30 billion by 2033 [17]. Detail in the child primer, Section 6.

7. Regulation

Recyclers operate under consumer, environmental, titling, and workplace rules: non-OEM/recycled crash-parts laws in at least 35 states (OEM = original equipment manufacturer; ~31 states require written disclosure and roughly a quarter require the customer's explicit consent, while occasional state bills — recent New York and Texas proposals among them — would mandate OEM parts on newer vehicles, a demand headwind) [18]; environmental handling of fluids and refrigerants, with recycled used oil regulated separately under 40 CFR Part 279 and batteries and similar materials under universal-waste rules [19], venting of automotive refrigerants other than carbon dioxide prohibited and approved recovery equipment required, and added RCRA storage and transport duties above 100 kilograms (220 pounds) of hazardous waste per month [20], on top of industrial stormwater exposure and legacy soil contamination; titling and anti-fraud reporting of acquired junk or salvage automobiles and their disposition to NMVTIS (the National Motor Vehicle Title Information System) [21]; catalytic-converter theft laws requiring VIN marking and scrap-dealer records; and workplace safety — BLS recorded seven fatal occupational injuries in NAICS 42314 in 2023 [22], a reminder that this is heavy, hazardous work — plus standard OSHA rules and land-use zoning. Full breakdown in the child primer, Section 7.

8. Consolidation

The industry is fragmented but consolidating. The top 4 firms hold 50% of receipts and the top 50 hold 72.7%, yet the HHI of ~861 is still below the 1,500 line economists use for "moderately concentrated" [3] — one large leader (LKQ) plus a very long tail of small independents. Consolidation has been led by LKQ (built through hundreds of acquisitions) and by PE-backed roll-ups such as Fenix Parts [11][12]. The 2025 transactions point the same direction but change who owns the assets rather than how many owners there are: LKQ's divestiture of its self-service segment to a private-equity buyer [7] and Toyota Tsusho's purchase of Radius Recycling [10] both moved operating exposure out of U.S. public markets. Expect continued tuck-in acquisition of independents as owners retire and as scale in logistics and shared inventory data widens the gap. See the child primer, Section 8.

9. Risks

• EV transition (structural) — electric vehicles have far fewer mechanical parts (no engine, transmission, or catalytic converter), eroding two revenue layers over time, and engines and transmissions are among the largest SKUs today [7]; offsets are collision parts, ADAS modules, and emerging battery recycling. CCC found EVs averaged 22 replaced parts per repair in 2024 versus 16 for internal-combustion vehicles [16] — evidence of collision complexity, not a guarantee of recycled-parts demand.
• Regulatory reversal — state pushes to mandate OEM parts on newer vehicles would cap recycled-parts demand [18].
• Raw-material cost inflation — competition for salvage vehicles at auction (including foreign buyers) can compress margins [7].
• Commodity volatility — scrap and precious-metal prices swing per-vehicle economics; the natural hedge is partial and mistimed, since metal prices can move realized scrap revenue before donor-vehicle costs adjust [7].
• Environmental liability and land use — contamination, zoning, and cleanup costs are ever-present, and reported EBITDA can overstate distributable cash flow where yard remediation and fluid- or battery-handling capex has been deferred.
• Supply-side concentration — dependence on two auction platforms (Copart, IAA) for raw inventory.
• Labor — wage inflation and difficulty retaining experienced dismantlers, graders, drivers, and EV-qualified technicians constrain both capacity and part quality.

Expanded in the child primer, Section 9.

10. How to invest & outlook

Because this level is its one child, the routes are identical to 423140. Public: LKQ (NASDAQ: LKQ) is the primary listed way to touch recycled parts, though it is a diversified aftermarket-and-recycled distributor with a large European arm, not a pure salvage-parts play — its North America segment should not be valued as if all of it were this code [7]. Copart (CPRT) and RB Global/IAA (RBA) give asset-light, fee-based exposure to the salvage-auction layer that supplies the yards, riding the same total-loss volumes without dismantling's labor and inventory intensity — and they can prosper on volume even when higher auction prices squeeze dismantler returns [8][9]. Toyota Tsusho offers indirect exposure through Radius/Pick-n-Pull, but used parts are a sliver of a broad trading group [10]. There is currently no small-cap pure-play used-parts wholesaler; Fenix Parts left the public market [11][12]. Private (where most of the real exposure lives): owning and rolling up independent recyclers, PE-backed consolidators, the real-estate angle on land-intensive yards, and the Car-Part.com data layer. Diligence should center on gross profit per donor vehicle, parts sold per donor, acquisition cost by source, inventory age and turns, fill rate, warranty and return rates, auction dependence, title compliance, and normalized environmental capex.

Outlook. The demand backdrop looks supportive — a record-old fleet, elevated new-car and repair prices, high insurer acceptance of alternative parts, and rising total-loss rates — with independent forecasts calling for ~8% annual market growth into the 2030s [1][17]. The swing factors are commodity prices and vehicle-acquisition costs; the long-term question is the EV transition. On balance, the durable characteristics here — fragmentation ripe for consolidation, real assets, and a structural cost advantage over new parts — are more accessible to private operators and to the auction/distribution leaders than to a public investor seeking a clean, direct bet, and the 2025 ownership shifts moved the sector further in that direction.

For the full detail on every section above, see the child primer: Motor Vehicle Parts (Used) Merchant Wholesalers — NAICS 423140.

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Sources

1. Automotive Recyclers Association (ARA), industry overview (9,000+ locations, 140,000+ employees, ~$32B annual sales; recycled parts 20–80% cheaper), 2024/2025. https://www.a-r-a.org/ and https://www.a-r-a.org/about-us/
2. U.S. Census Bureau, "NAICS 423140 — Motor Vehicle Parts (Used) Merchant Wholesalers" (definition and cross-references to 423930, 423130, 423110, 441330, 811121), 2022. https://www.census.gov/naics/?details=42&input=42&year=2022
3. U.S. Census Bureau, 2022 Economic Census — Industry concentration/receipts, NAICS 423140 (1,341 firms; 1,768 establishments; ~$10.13B receipts; CR4 50.0%, CR8 57.3%, CR20 63.9%, CR50 72.7%; HHI 861.4), 2022. https://www.census.gov/programs-surveys/economic-census.html
4. U.S. Census Bureau, County Business Patterns 2023, NAICS 423140 (1,805 establishments; 25,772 employees; ~$1.34B annual payroll), 2023. https://data.census.gov/profile/423140_-_Motor_vehicle_parts_%28used%29_merchant_wholesalers?codeset=naics~423140
5. U.S. Census Bureau, 2022 Economic Census — Gross margin and gross profit, NAICS 423140 (sales $10.121B; purchases $5.395B; COGS $5.253B; gross margin $4.867B / 48.1%; operating expenses $2.427B; gross profit $2.440B / 24.1%), Table EC2242GRMARGPROF, 2022. https://data.census.gov/table/ECNGRMARGPROF2022.EC2242GRMARGPROF
6. U.S. Small Business Administration, Table of Small Business Size Standards (NAICS 423140 = 125 employees), 2023. https://www.sba.gov/document/support-table-size-standards
7. LKQ Corporation, Form 10-K for FY2025 (North America segment revenue $5,651M, segment EBITDA $814M; self-service segment sale at $410M enterprise value; scrap price −9% and rhodium/platinum/palladium prices +40%/+38%/+20% in 2025; engines and transmissions as major SKUs; auction-sourced inventory and bidding competition), U.S. SEC, filed 2026. https://www.sec.gov/Archives/edgar/data/1065696/000106569626000012/lkq-20251231.htm
8. Copart, Inc., "Fourth Quarter and Full Year Fiscal 2024 Results" (revenue ~$4.2B; net income ~$1.4B, year ended July 31, 2024), U.S. SEC Form 8-K / CollisionWeek, Sept. 2024. https://collisionweek.com/2024/09/06/copart-reports-fiscal-2024-full-year-revenue-9-5-4-2-billion/
9. RB Global, Inc., "Fourth Quarter and Full Year 2024 Results" (total revenue ~$4.59B; owns IAA/Insurance Auto Auctions), Feb. 2025. https://investor.rbglobal.com/news/news-details/2025/RB-Global-reports-fourth-quarter-and-full-year-2024-results/default.aspx
10. Toyota Tsusho Corporation, announcement of Radius Recycling acquisition, July 2025. https://www.toyota-tsusho.com/english/press/detail/250711_006639.html
11. Fenix Parts, growth timeline (34+ locations), 2025. https://fenixparts.com/growth-timeline/
12. GlobeNewswire, "Fenix Parts Stockholders Approve Merger Agreement with Stellex Capital Management LP," Apr. 2018. https://www.globenewswire.com/news-release/2018/04/09/1467291/0/en/Fenix-Parts-Stockholders-Approve-Merger-Agreement-with-Stellex-Capital-Management-LP.html
13. S&P Global Mobility, "U.S. Vehicle Age Rises Again to 12.8 Years in 2025," May 2025. https://press.spglobal.com/2025-05-21-U-S-Vehicle-Age-Rises-Again-to-12-8-Years-in-2025%2C-According-to-S-P-Global-Mobility
14. Federal Highway Administration, Traffic Volume Trends Table VM-1 (3.294 trillion vehicle miles traveled in 2024), 2024. https://www.fhwa.dot.gov/policyinformation/statistics/2024/pdf/vm1.pdf
15. Autobody News, "LKQ Reports Q1 Revenue Growth… alternative parts utilization reaching a record high of nearly 40%," 2026. https://www.autobodynews.com/news/lkq-reports-q1-revenue-growth-as-ceo-cites-signs-of-recovery-in-north-america
16. CCC Intelligent Solutions, "Crash Course Report" (70%+ of 2024 total-loss valuations were vehicles 7+ years old; EVs averaged 22 replaced parts per repair vs. 16 for ICE), 2024. https://ir.cccis.com/news-releases/news-release-details/ccc-crash-course-report-highlights-forces-reshaping-us-vehicle
17. Auto Recycling World, "Recycled Auto Parts Market Forecast To Grow 8% A Year To 2033" (~$17.4B in 2024 to ~$30B by 2033), 2024. https://autorecyclingworld.com/recycled-auto-parts-market-forecast-to-grow-8-a-year-to-2033/
18. Matthiesen, Wickert & Lehrer / Connecticut General Assembly OLR, state non-OEM/aftermarket crash-parts laws (35+ states regulate; ~31 require disclosure; ~25% require consent; recent NY/TX OEM-mandate bills), 2018–2025. https://www.mwl-law.com/use-aftermarket-non-oem-crash-parts-repair-damaged-vehicles/ and https://www.cga.ct.gov/2009/rpt/2009-R-0398.htm
19. U.S. EPA, "Regulatory Exclusions and Alternative Standards for Recycling Materials, Solid Wastes and Hazardous Wastes" (40 CFR Part 279 for used oil; universal-waste rules), 2025. https://www.epa.gov/hw/regulatory-exclusions-and-alternative-standards-recycling-materials-solid-wastes-and-hazardous
20. U.S. EPA, "Handling Contaminated Automotive Refrigerants" (MVAC venting prohibition; recovery equipment requirements; 100 kg/month RCRA threshold), 2025. https://www.epa.gov/mvac/handling-contaminated-automotive-refrigerants
21. NMVTIS, "Data Required" (junk/salvage yard reporting requirements), 2025. https://www.vehiclehistory.gov/Data_Required.PDF
22. Bureau of Labor Statistics, "Fatal occupational injuries by industry, 2023" (7 fatalities in NAICS 42314), Table A-1, 2023. https://www.bls.gov/iif/fatal-injuries-tables/fatal-occupational-injuries-table-a-1-2023.htm

The child primer, NAICS 423140, carries further sources not repeated on this rollup page — LKQ's FY2024 10-K, the Copart and RB Global annual filings, and additional detail behind the operating and regulatory sections.