✅ Compatibility

• Make: Cummins
• Engine Family: Cummins C-series 8.3L and L-series 8.9L mid-to-heavy-duty diesel and natural gas engine platform
• OEM / Cross Reference Part Numbers:
  • Cummins: 4992285, 4280009950
  • Denso: 428000-7130 / 4280007130
  • Denso: 428000-7131 / 4280007131
  • Denso: 4280007150
  • Denso (V-suffix variant): 4280007871V
• Compatible Cummins Engine Models:
  • C-series 8.3L diesel: 6C8.3, ISC8.3, QSC8.3
  • L-series 8.9L diesel: ISL, ISL9, L9, QSL8.9, QSL9
  • L-series 8.9L natural gas: QSJ8.9 G (LNG / CNG natural gas variant)
• Typical Applications:
  • Transit and intercity buses (Cummins L9 / ISL9 — North America’s most widely used bus engine)
  • School buses (Cummins ISC8.3 / ISL — Yellow school bus primary powertrain)
  • Refuse collection vehicles / garbage trucks (Cummins ISL9 / L9)
  • Concrete mixer trucks and ready-mix vehicles (Cummins ISC8.3 / ISL)
  • Medium and heavy-duty commercial trucks (Cummins C-series and L-series)
  • Marine commercial applications (Cummins QSC8.3 / QSL8.9)
  • Industrial equipment and generator sets
• ⚠️ Fitment Note: Verify your Cummins engine model designation, serial number, and existing starter part number before ordering. The QSJ8.9 G is the natural gas variant — confirm engine fuel type (diesel or natural gas) before ordering. Contact us for fitment confirmation.

🔧 Product Highlights

• Direct OEM Replacement — Cummins 4992285 / Denso 428000-7130 Starter for Cummins C-Series 8.3L and L-Series 8.9L Mid-to-Heavy-Duty Engine Platform: Drop-in fit for all compatible Cummins 6C8.3, ISC8.3, QSC8.3, ISL, ISL9, L9, QSL8.9, QSL9, and QSJ8.9 G engine applications — matching original Cummins / Denso starter specifications for reliable heavy-duty engine cranking across the full C-series and L-series engine platform
• 8 OEM Part Numbers Across Cummins and Denso — Including Hyphenated and Continuous Formats and V-Suffix Variant: Cross-references 8 part numbers across Cummins OEM (4992285 / 4280009950), Denso in both hyphenated format (428000-7130 / 428000-7131) and continuous format (4280007130 / 4280007131 / 4280007150), plus the Denso V-suffix variant (4280007871V) — ensuring correct identification regardless of which catalog format your parts system uses
• Cummins ISL9 / L9 — North America’s #1 Transit Bus and School Bus Engine with the Largest Installed Base in Public Transport: The Cummins ISL9 (now branded L9) is the dominant powertrain in the North American transit bus and school bus market — used by virtually every major North American city transit authority and school bus fleet operator. The L9 powers the majority of New Flyer, Gillig, Nova Bus, and Motor Coach Industries transit buses, as well as Blue Bird, IC Bus, and Thomas Built school buses across the United States and Canada. This starter is directly relevant to public transit agencies, school bus fleet operators, and their maintenance contractors
• Cummins ISC8.3 / QSC8.3 — The Industry-Standard Engine for School Buses, Refuse Trucks, and Concrete Mixers: The Cummins ISC8.3 and QSC8.3 are among the most widely used engines in the North American school bus, refuse collection, and concrete mixer truck markets — powering the majority of Blue Bird All American, IC Bus CE, and Thomas Built school buses from the late 1990s through 2010s, as well as a large proportion of McNeilus and Heil refuse bodies and McNeilus / London concrete mixer trucks. High annual mileage and continuous duty cycles drive sustained starter replacement demand across these fleets
• QSJ8.9 G — Cummins’ 8.9L Natural Gas Engine for Low-Emission Transit Bus and Refuse Vehicle Applications: The Cummins QSJ8.9 G is the natural gas (LNG / CNG) variant of the L-series 8.9L platform — deployed in low-emission transit buses and refuse vehicles where CNG and LNG are mandated or preferred for air quality compliance. Natural gas bus and refuse fleets are growing in North America, Europe, and Asia as cities mandate lower tailpipe emissions, driving increasing demand for quality natural gas engine starter parts
• Cummins C/L Series — One of the Most Widely Deployed Mid-to-Heavy-Duty Engine Platforms Globally with Decades of Continuous Production: The Cummins C-series (8.3L) and L-series (8.9L) represent one of the most successful and widely produced mid-to-heavy-duty diesel engine families in history — with decades of continuous production and millions of units deployed in buses, trucks, marine vessels, and industrial equipment across North America, Europe, Asia, Australia, and globally. The sustained installed base ensures long-term high-volume aftermarket demand for quality replacement starters

📦 What's Included

• 1× Starter Motor — New Aftermarket (Cummins 4992285 / Denso 428000-7130)

🔑 Key Specs

• Cummins Part Numbers: 4992285, 4280009950
• Denso Part Numbers: 428000-7130 / 4280007130 — 428000-7131 / 4280007131 — 4280007150 — 4280007871V
• Compatible Engines: Cummins 6C8.3 / ISC8.3 / QSC8.3 (8.3L) — ISL / ISL9 / L9 / QSL8.9 / QSL9 (8.9L diesel) — QSJ8.9 G (8.9L natural gas)
• Primary Applications: Transit bus — school bus — refuse truck — concrete mixer — medium / heavy-duty commercial truck — marine — industrial
• Condition: New Aftermarket
• SKU: FN26061703

⚠️ Please verify your Cummins engine model designation and serial number before purchasing. The QSJ8.9 G is the natural gas (LNG / CNG) variant — confirm fuel type before ordering. Contact us if unsure — we are happy to confirm fitment for your Cummins C-series or L-series engine application.