Cummins L9 Diesel

9 L Power for Medium & Heavy Vocational Fleets

Power: 250 – 320 HP (calibrations up to 450 HP available) | Torque: 660 – 1,000 lb-ft (up to 1,250 lb-ft on select ratings)

The Cummins L9 delivers the sweet spot of horsepower, torque, and fuel efficiency for regional trucks, transit buses, refuse haulers, vocational rigs, and motor coaches. Evolving from the acclaimed ISL series of the early ’90s, today’s L9 pairs a high-pressure common-rail fuel system with cooled EGR, DPF, and SCR aftertreatment to meet the latest EPA/CARB standards—without sacrificing performance or uptime.

Why Operators Choose the L9

• Proven Durability: robust block and internals designed for long service intervals and low lifecycle costs.
• FuelSmart Performance: advanced injection, VGT turbo, and electronic controls maximize power while trimming diesel spend.
• Versatile Power Ratings: broad horsepower and torque options let you tailor the engine to your exact duty cycle.
• Ease of Service: modular components and Cummins’ worldwide support network keep maintenance straightforward and downtime minimal.

L9 Engines & Parts Ready to Ship

Boots & Hanks Truck Parts stocks compression-tested Cummins L9 take-outs, reman long blocks, turbochargers, injectors, ECMs, and complete overhaul kits—warrantied and available for same-day global shipping.

Power your fleet with Cummins reliability—call 800-738-7802 or explore live inventory at BootsAndHanksTruckParts.com today.