What Unity School Bus Parts does

Unity School Bus Parts is a privately held aftermarket parts retailer and specialty manufacturer based in Clinton Township, Michigan. Founded in 1986 (per firmographic data) and operating for over 30 years, the company sells replacement parts exclusively for school bus fleets through its own BigCommerce-powered e-commerce storefront at unityparts.com. The catalog covers 30+ product categories spanning engine components, electrical systems, lighting, mirrors, safety equipment, ADA-compliant wheelchair securement, signage, windshield wipers, body panels, and consumables, supporting parts compatibility with Blue Bird, Thomas, Carpenter, International, Amtran, and Wayne buses — including older and discontinued models that OEMs no longer supply. Beyond distribution, Unity operates an in-house manufacturing capability under its proprietary Custom Bus brand, producing body panels, floor rails, step wells, skirt panels, and structural repair parts in Michigan, with all parts 100% made in America.

The go-to-market is direct-to-consumer e-commerce: customers self-serve through the website, with phone order support via an 800-number. Catalog items use fixed unit pricing (MSRP with displayed discounts), while larger fabricated items use quote-based pricing. Unity complements its private-label Custom Bus line with third-party branded components sourced from major aftermarket suppliers including Dorman, Rosco, Q'Straint, Sure-Lok, Besi, Grote, Bergstrom/Kysor, Weldon, and Truck-Lite. Marketing relies on SEO-optimized category and product pages, an email newsletter, and account/wishlist features for repeat purchase, with no paid channel or app presence disclosed.

Revenue is generated through one-time aftermarket parts sales to school bus fleet operators, transportation departments, independent mechanics, and body shops. The company is privately held with no disclosed financials, no funding rounds, and no institutional investors identified in the available data. It is led by President & Owner Edward Mastry and operates from a single Clinton Township headquarters serving both domestic and international customers. Employee count is reported in the 11-50 band.

Name

Unity School Bus Parts

Legal name

Unity School Bus Parts

Website

https://unityparts.com

Company type

Private

Founded year

1994

Operating status

Operating

Headcount range

11–50 employees

Short description

Unity School Bus Parts is a Clinton Township, Michigan-based e-commerce retailer and in-house manufacturer of aftermarket replacement parts exclusively for school bus fleets, serving mechanics, body shops, and transportation departments across the US and internationally.

Ownership category

akta.pro rank

Product category

School Bus Replacement Parts

NAICS

Other Motor Vehicle Parts Manufacturing (336390)

SIC

Truck & Bus Bodies (3713), Motor Vehicle Parts & Accessories (3714)

akta.pro primary industry

Bus & Coach Aftermarket Parts & Refurbishment Manufacturing (IMACADAO)

akta.pro secondary industry

Bus Body & Coachbuilder / Bus Body Assembly (IMACADAH)

Keywords

• School bus parts
• Aftermarket bus components
• Commercial vehicle parts
• Bus body repair parts
• Fleet maintenance supplies

Headquarters

HQ city

Clinton Township

HQ country

United States

HQ region

North America

Offices1 record

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Supply Chain, Operations, Personnel, Marketing or Sales, Technology or R&D

Revenue model

1. Aftermarket School Bus Parts Sales: Revenue generated through direct online sales of replacement parts for school buses. The company sells parts for Blue Bird, Thomas, Carpenter, International, Amtran, and Wayne buses. Products include body panels, engine components, electrical parts, mirrors, lights, safety equipment, and accessories. The company manufactures some proprietary parts (Custom Bus brand) while also distributing third-party brands.

Pricing tiers

Go-to-market motion1 record

Distribution channels1 record

Marketing channels3 records

Core offering

Unity School Bus Parts operates an online (BigCommerce) storefront that sells aftermarket replacement parts for school buses—including body panels, engine components, electrical parts, mirrors, lights, safety equipment, and accessories—for Blue Bird, Thomas, Carpenter, International, Amtran, and Wayne buses. The company manufactures its own Custom Bus brand body panels and structural components in Michigan and distributes third-party brands including Dorman, Rosco, Besi, Grote, Weldon, Q'Straint, and Bergstrom/Kysor, serving school districts, fleet operators, mechanics, and body shops across North America.

Product overview

Unity School Bus Parts is an e-commerce retailer specializing in aftermarket replacement parts for school buses. The company operates a single unified e-commerce platform (powered by BigCommerce) offering parts across 30+ product categories serving Blue Bird, Thomas, International, IC/Amtran, Carpenter, and other school bus manufacturers. Their portfolio includes proprietary Custom Bus branded replacement body panels alongside third-party branded components from vendors like Dorman, Rosco, Besi, Bergstrom, Grote, and Truck-Lite. The product range covers the complete lifecycle of school bus maintenance—from routine cleaning supplies and safety equipment to critical engine components, electrical systems, mirrors, lighting, and accessibility/wheelchair securement equipment.

Differentiator

Problem solved

Functional benefit

Brands

• Custom Bus: In-house brand for manufacturing school bus replacement parts including body panels, door repair kits, floor rails, step wells, skirt panels, and other structural components. The company states they have over 30 years of experience designing and manufacturing these parts, specializing in Blue Bird, Thomas, Carpenter, International, Amtran and Wayne parts. Parts are manufactured in America.

Products and services

• Custom Bus Body Panels and Structural Parts In-house manufactured Custom Bus brand replacement body panels and structural components for Blue Bird, Thomas, Carpenter, International, Amtran, and Wayne school buses, including battery boxes, door related parts, floor related parts, interior panels, rear body parts, side body parts, and step wells.
• Body Parts Replacement body parts covering battery boxes, door parts, floor parts, interior panels, rear body parts, side body parts, and step wells for Blue Bird, International/Amtran, Thomas, and miscellaneous school bus models.
• Tire Pressure Products Tire pressure monitoring and maintenance products for school buses.
• Brooms, Ice Scrapers & Trash Cans Cleaning and maintenance equipment including brooms, broom heads, handles, squeegees, wash brushes, dust pans, ice scrapers, trash cans, and trash bags.
• Door Props Telescopic door props for Bluebird, Collins, IC, and Thomas school bus models.
• Drivers & Mechanics Accessories Accessories for drivers and mechanics including brake knobs, bungee cords, ratchets, tow straps, extension cords, flashlights, work lights, batteries, gloves, sealants, tissues, towels, and wipes.
• Electrical Components Electrical parts including auxiliary fans, circuit breakers, relays, current testers, plug kits, door buzzers, extension cords, flashers, horns, alarms, jump boxes, monitor boards, and solenoids for various bus brands.
• Engine Related Products Engine components including accelerator pedal assemblies, diesel particulate filters, diesel valve cover gasket kits, exhaust manifold kits, exhaust up pipes, nitrogen oxide sensors, oil pans, pigtails, reservoirs, sensors, timing covers, and turbocharger hardware.
• Exhaust Clamps Exhaust system components including flat clamps, preformed clamps, U-bolt clamps, V-band clamps, and hangers.
• First Aid and Safety Safety equipment including body fluid clean-up kits, emesis bags, hand cleaners, disinfectants, electrostatic sprayers, emergency equipment, first aid kit components, first aid kits, and sleeping child reminder systems.
• Fuel Tanks and Accessories Fuel tank components for Bluebird, IHC, International, and Thomas/Freightliner buses.
• Heater Motors, Pumps, & Parts Heating system components including auxiliary fans, control knobs, coolant tubes, diesel particulate filters, engine block heaters, heater coils, blower assemblies, blower wheels, pumps (Bergstrom, Groco, MP), motors, water valves, actuators, and cables.
• Latches, Handles & Steps Door hardware including door latches, hood latches, emergency latches, miscellaneous latches, handles, and steps.
• Lights, Lamps, Bulbs Lighting products including lens gaskets, stop arm lighting, stop & tail lights, turn signal lights, marker and clearance lights, warning lights, backup lights, interior dome lights, LED products, strobe lights, headlamps, and miniature bulbs from brands including Baader Brown, Grote, KD, SoundOff/Opti-Luxx, Truck-Lite, and Weldon.
• Mirrors Bus mirrors including interior mirrors, sun visors, Mirror Lite Bus Boy mirrors, Double Nickel & Eagle mirrors, dolly & convex mirrors, high definition mirrors, safety cross mirrors, solar eclipse mirrors, super nickel mirrors, west coast mirrors, and Rosco crossview mirrors (Hawk-Eye, AccuStyle, Avia, Eurostyle, Eye Max LP, OpenView).
• Mobile Surveillance Camera Systems Camera systems including REI Camera Systems, Rosco Vision Systems, and Seon Camera Systems for school bus surveillance.
• Radios and Accessories Communication equipment including antennas, microphones, radios, and speakers/PA horns.
• Signage and Decals Bus signage including illuminated school bus signs, crossing paddles, empty signs, magnetic animal signs, reflective tape, route changers, and vinyl decals.
• Stop Arms, Crossing Arms, Roof Hatches Safety equipment including crossing arm assemblies, illuminated stop arms, crossing arm blades & rods, driver alert signs, stop arm and crossing arm replacement parts, stop arm assemblies, roof hatches, and roof hatch replacement parts.
• Safety Restraints Passenger safety equipment including Safeguard STAR seats, BESI Pro-Tech, C.E. White PCR, BESI zipper vests, Safe Journey vests, Ez-On MAX vests, adjustable zipper vests, modified vests, harnesses, family vehicle restraints, mounting options, accessories, buckle guards, and seat belts.
• Seat Repair Components Seat repair components including seat covers for Blue Bird, Carpenter, IC/Amtran/Ward, Thomas, and Wayne buses, driver barrier covers, seat back foam, interior seat paint, seat tape, and repair accessories.
• Stepwell Tread Stepwell tread products for Blue Bird, Thomas, IC/International buses and universal options with tread nosing.
• Surge Tanks Surge tank components for Bluebird, IC/International, and Thomas buses, and caps.
• Switches Switch components including Carpenter switches, Blue Bird switches, door/window switches, headlight switches, Thomas rocker switches, turn signals, and wiper switches/modules.
• Wheel Chair Securement Equipment Wheelchair securement systems including Q'Straint QRT-360, Q-5000, QRT retractable systems, M-Series, shoulder & lap belts, tracking hardware, and accessories, plus Sure-Lok FE500, FF600, Titan retractor systems and mounting hardware.
• Wiper Blades and Accessories Wiper products including Autotex, Contour, extreme weather/winter, heavy duty, Kwik Connect, standard wipers, Trico, Anco, Dyna, economy blades, pantographic/radial arms, washer tanks, wiper linkages, motors, nozzles, and switches.
• Clearance Parts Discounted parts including electrical miscellaneous items, exhaust clamps, first aid and safety items, heater motors/pumps, lights/lamps/bulbs, mirror parts, seat repair items, signage/decals, stop arms/crossing arms/roof hatches, switches/circuit breakers, and wheelchair equipment.
• New Heavy Duty Product Line Newly introduced heavy duty product line for school bus applications.
• New Arrivals Newly added replacement parts and SKUs across the school bus parts catalog.
• Dorman Exhaust Manifold Kit Dorman exhaust manifold kits for Blue Bird and Freightliner buses (2004-2007), featuring cast iron construction with gaskets and mounting hardware included.
• Dorman Diesel Particulate Filters Dorman diesel particulate filters for Blue Bird, Freightliner, IC Corporation, and International school bus applications (2007-2016 models), priced from $1,627 to $3,808.
• Stainless Steel Radiator Overflow Tanks Custom Bus brand stainless steel radiator overflow tanks manufactured by Unity School Bus Parts.

Segments3 records

Ideal customer profiles3 records

Technology focussed No

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Partnerships

Seven partnerships are on record, tiered major and core.

• DormanmajorTechnology or IntegrationDorman is a major supplier of automotive replacement parts including door motors, exhaust manifolds, diesel particulate filters, and engine components sold through Unity's platform.
• Custom BuscoreTechnology or IntegrationCustom Bus is Unity's proprietary private-label brand manufacturing body panels, structural repair parts, and specialty components for Thomas, Blue Bird, and other school bus manufacturers.
• RoscomajorTechnology or IntegrationMajor supplier of mirrors including Hawk-Eye Crossview, AccuStyle, Avia, Eurostyle, Eye Max LP, and OpenView mirror systems.
• BesimajorTechnology or IntegrationSupplier of seat covers, safety restraints, and accessibility equipment including zipper vests for wheelchair passengers.
• Q'StraintmajorTechnology or IntegrationSupplier of wheelchair securement systems including QRT-360, M-Series, Q-5000, and retractable systems for ADA-compliant school bus accessibility.
• Sure-LokmajorTechnology or IntegrationSupplier of wheelchair securement equipment including FE500 and FF600 retractor systems for school bus accessibility.
• BigCommercecoreTechnology or IntegrationE-commerce platform provider powering Unity's online storefront, shopping cart, customer accounts, and checkout functionality.

Scale indicators2 records

Recent moves5 records

Expansion highlights4 records

Broad incumbents

• AutoZone: Largest U.S. auto parts specialty retailer with extensive commercial program. While primarily light-duty focused, its commercial program increasingly overlaps with Unity's small-fleet customer base on commodity parts categories.
• O'Reilly Auto Parts: Large publicly traded auto parts retailer with strong commercial program and growing online presence. Overlaps with Unity on common components but serves a vastly broader vehicle base including light-duty commercial.
• Dorman Products: Major U.S. aftermarket parts manufacturer/distributor with deep coverage of engine, electrical, and chassis components for commercial vehicles. Dorman is also a key Unity supplier, making them both a competitor in product development and a partner in distribution.
• NAPA Auto Parts (Genuine Parts Company): Largest U.S. automotive aftermarket parts distributor with extensive online catalog and nationwide store network. Competes with Unity on overlapping product categories (engine, electrical, lighting) but at significantly greater scale and broader vehicle coverage.

Direct peers

• FleetPride: Heavy-duty aftermarket parts distributor serving commercial truck and bus fleets across North America with a broad multi-brand catalog and growing e-commerce channel — directly comparable business model to Unity, scaled up and broadened beyond school buses.

Others

• Thomas Built Buses: Major U.S. school bus OEM (Daimler Truck subsidiary) whose platforms Unity supports with replacement parts. Similar to Blue Bird — ecosystem participant and potential competitive threat via dealer parts channels.
• IC Bus (Navistar/Traton): School and commercial bus OEM (Navistar/Traton) whose International and Amtran buses Unity services. Ecosystem relationship similar to Blue Bird and Thomas Built Buses.
• Blue Bird Corporation: Largest U.S. school bus OEM whose buses Unity services with aftermarket parts. Not a direct competitor but a critical ecosystem participant; OEM captive parts programs could compete with Unity over time.
• Rosco (ROSCO Vision Systems): Leading supplier of mirrors, vision systems, and surveillance cameras for school buses — and one of Unity's key supply partners. Comparable in serving the same end customer (school bus fleets) but operating upstream as a manufacturer rather than retailer.
• Q'Straint / Sure-Lok (pride Mobility Products): Dominant wheelchair securement system suppliers for school bus ADA compliance, both stocked and sold by Unity. Adjacent to Unity's distribution model rather than competitive — they manufacture and Unity distributes to end customers.

Market position

Strengths2 records

Weaknesses4 records

Competitive moat3 records

Key risks5 records

Key highlights6 records

Customer concentration

• Facebookfacebook.com/UnitySchoolBusParts
• LinkedInlinkedin.com/company/unity-school-bus-parts

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Unity School Bus Parts