Cummins Every Time - Fire & Emergency

Whether you're fighting a brush fire or rushing paramedics to the scene of an accident, you need equipment you can count on. Every call. Every time. Cummins ISB gives you that kind of dependable performance. High-Pressure Common-Rail fuel injection combines with our patented Variable Geometry Turbo to deliver superior performance at every rpm. Plus, because our VG Turbo has only one moving part in the hot exhaust stream, it is inherently more reliable and durable.

And that's just for starters. Fuel economy is up to 2% better. Engine performance is stronger, yet there's 80% less noise. Integrated exhaust braking is standard, along with exceptional reliability. Yet, for all these enhancements, maintenance is kept to an absolute minimum.

ISB ratings go as high as 300 horsepower with 660 lb-ft of peak torque (350 lb-ft at clutch engagement), with enough power to drive 1,250-gpm pumps. All from an engine that weighs less than 1,200 pounds.

Every ISB is covered by a full 5-year/100,000-mile (160,935 km) standard warranty. All backed by the most extensive customer support network in the industry.

Need rugged, reliable auxiliary power? There's no better choice than an Onan® genset. Cummins engines and Onan gensets are backed by the same worldwide network of distributors/dealers, so we're able to offer design, manufacturing and customer support synergies not found in any other company supporting the fire/emergency industry.

The ISB is one powerful reason why Cummins engines are fast becoming the #1 choice for fire apparatus everywhere in North America.

For more information on this engine, download the ISB Fire And Emergency Applications Brochure. For details on the full lineup of Cummins engines for fire and emergency vehicles, download the Fire And Emergency Vehicle Engines Brochure.

Engine Model	Advertised hp	Peak Torque	Governed Speed
ISB 300	300	660 @ 1600	2600
ISB 275	275	660 @ 1600	2600

The ISB features a High-Pressure Common-Rail (HPCR) fuel system. The constant flow of fuel produces quicker throttle response across every rpm. That means more power off the line and faster acceleration on every call. Constant injection pressures also help optimize timing for increased fuel efficiency and lower emissions.

ISB engines feature a Variable Geometry Turbocharger from Holset that constantly adjusts airflow based on engine load, ambient pressure and other conditions. The result is improved response and stronger clutch engagement torque, every time you step on the throttle. This VG Turbo has a single sliding nozzle, eliminating dozens of parts and increasing dependability and durability.

And here's something every firefighter can appreciate: The ISB not only runs faster on less fuel - it also runs up to 7 decibels quieter at idle. That's 80% less noise, inside and out.

Specifications.

Advertised Horsepower	275-300 hp	206-224 kW
Peak Torque	660 lb-ft	895 N•m
Governed Speed	2600 rpm
Clutch Engagement Torque	350 lb-ft	475 N•m
Number of Cylinders	6
Oil System Capacity	4 U.S. gallons	15.1 liters
Net Weight (dry)	1,150 lb	522 kg

The ISB not only delivers lower emissions, it also delivers increased fuel economy. Based on field test results, you can expect the ISB to deliver up to 2% better fuel economy than its predecessor.

Most Variable Geometry Turbochargers use flexible vanes, with literally dozens of wear points and individual parts constantly moving under intense pressure and heat.

The Holset Variable Geometry Turbocharger is different. It replaces the movable vanes with a simple sliding nozzle, eliminating dozens of parts and increasing dependability and durability. This patented design has already been proven highly effective and reliable in over 150,000 vehicles worldwide.

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With over three million B Series engines in use around the globe, there's no question about the dependability or durability of this proven engine platform.

Today's ISB is our strongest, most reliable engine yet. It features the patented VG Turbo with only one moving part in the hot exhaust stream (competitive turbos have dozens). The engine block has been stiffened to enhance durability and reduce noise. Gallery cooling lowers piston temperatures for longer life. An integrated oil cooler lowers oil temperatures and a state-of-the art Fleetguard® oil filter extends component and engine life. Plus, a self-tensioning belt drive system reduces maintenance and increases belt life for both the fan and alternator.

Heavy-duty components and advanced design features give the ISB longer life-to-overhaul, with increased performance and lasting value. And that's something you can rely on every minute of every call.

Another benefit of the Variable Geometry Turbocharger (VG Turbo) is improved braking performance from an integrated exhaust brake. This increased braking capacity gives every driver greater control on every downhill grade. It also reduces wear on service brakes, lengthening service intervals and minimizing maintenance costs.

The ISB is designed for simple, easy maintenance every time.

Oil, oil filter and fuel filter changes for the ISB are set at 500 hours, 6 months or 15,000-mile (24,000 km) intervals. The overhead doesn't need to be checked for 5,000 hours, 48 months or 150,000 miles (240,000 km).

The standard coolant change interval is 24 months or 60,000 miles (96,000 km). However, Cummins ISB is fully compatible with long-life coolant/antifreeze formulas which allow changes out to every 600,000 miles (960,000 km) or 6 years. Follow maintenance guidelines recommended by the manufacturer for safe use with extended service intervals.

See Owner's Manual for every detail. And when it's time for maintenance, be sure to visit your Cummins distributor for fast, accurate service. At Cummins, we make every minute count.

For complete maintenance information, please consult your Owner's Manual or Operations and Maintenance Manual.

Cummins fire apparatus engines are backed by a base warranty of 5 years or 100,000 miles (160,935 km), whichever comes first, including parts, labor and towing. For more information, see the Fire Apparatus Warranty Certificate, Bulletin 3381161.

There is no deductible for covered repairs during the first 2 years of the base warranty. A deductible of $100 (U.S. dollars) per repair applies during the 3rd, 4th and 5th years of the base engine warranty.

Extended Coverage Plans.

While you're protecting your community, you should protect yourself with extended coverage plans from Cummins. These plans include 100% parts and labor with a $100 deductible per repair event (after the base warranty period expires). Plan 1 gives you complete engine coverage for 5 years and your choice of 150,000 (241,402 km) or 200,000 miles (321,869 km). Plan 2 lets you choose between major engine component coverage for a choice of 7 years/150,000 miles (241,402 km) or 10 years/200,000 miles (321,869 km). Extended coverage is available to be purchased in the first 6 months after the in-service date. For complete coverage details, see Bulletins 3381368 and 3381367.

Our customer care programs are unmatched by anyone else in the industry. Every Cummins customer is supported by:

The largest parts and service network in the industry with over 3,500 authorized repair locations everywhere throughout the U.S. and Canada
Accelerated problem diagnosis at every Cummins QuickServe® location
24/7 access to Cummins
1-800-DIESELS (1-800-343-7357)

For your nearest authorized Cummins service provider, see our service locator.

Cummins Inc. is parent company to Cummins Power Generation - which manufactures Onan brand gensets. These gensets are made specifically for the rugged fire/emergency market where reliability, uptime and performance are crucial. We offer a complete line of mobile gensets to power every fire or emergency application, including hydraulic, diesel, natural gas, LPG and gasoline fuel-powered models ranging from 2-40 kW, plus portable gensets in 4 and 6 kW.

Cummins engines and Onan gensets are backed by the same worldwide network of distributor/dealers. We offer design, manufacturing and customer support synergies not found in any other company supplying the fire/emergency industry. Contact your nearest Cummins Onan distributor by calling 1-800-888-ONAN or 763-574-5000, or visit www.onan.com.