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6.0L V8 gas engine

The 2012 Isuzu N-Series gas truck is powered by General Motor’s 6.0L Gen IV small block V-8 engine, coupled to a new double overdrive 6-speed automatic transmission with lockup torque converter that improves both vehicle performance and fuel economy.

With 297 hp and 372 ft.-lbs. of torque, the engine carries on with well-proven design features like a 100,000 mile maintenance-free ignition system, a long-life timing chain and cast stainless steel exhaust manifolds. New for 2012, the Isuzu N-Series gas truck is also available with an optional CNG/LPG capable engine.

Isuzu 4JJ1-TC 3.0-liter diesel engine

Standard on the 2011 NPR ECO-MAX is the newest engine in the Isuzu family—the 4JJ1-TC.

Its high-pressure common-rail fuel injection system wrings the most energy out of every drop of fuel, and its intercooled, variable-geometry turbocharger provides excellent response over the engine’s entire RPM range. Together, these features help the 4JJ1-TC produce 150 horsepower and 282 lbs.-ft. of torque.

Despite its spirited performance, this engine is a miser. In fact, the NPR ECO-MAX achieves up to 20% better fuel economy than the previous 12,000-lb. GVWR NPR.

Like every Isuzu powerplant, the 4JJ1-TC is a true commercial vehicle engine. Each component has been crafted to reduce maintenance and increase durability.

So it’s no surprise that the 4JJ1-TC can be driven up to 10,000 miles between oil changes and has a class-leading B10 durability rating of 310,000 miles—meaning that 90% of 4JJ1-TC engines will reach that mileage before requiring an overhaul.

Isuzu 4HK1-TC 5.2-liter diesel engine

Standard on every NPR-HD, NQR and NRR is the Isuzu 4HK1-TC engine—known worldwide for its power and ruggedness, and improved for 2011 to deliver even more performance, economy and reliability.

The 4HK1-TC is now equipped with electronic high-pressure common-rail direct injection and a water-cooled EGR system to achieve unprecedented performance—210 horsepower for trucks equipped with the automatic transmission, and 190 horsepower for manual-transmission models.

At Isuzu, improvements in power never come at the expense of reliability, durability, or fuel economy. The 4HK1-TC engine can still run up to 10,000 miles between oil changes reducing maintenance costs and downtime and boasts an astonishing B10 durability rating of 310,000 miles. And despite the increased power and lower emissions, 2011 Isuzu N-Series trucks equipped with the 4HK1-TC engine will achieve approximately 8% better fuel economy than the models they replace.

Fuels: Ultra-low Sulfur Diesel (ULSD) and Biodiesel

Today, Isuzu diesel engines operate using ultra-low sulfur diesel (ULSD). For customers that wish to use biodiesel, Isuzu allows use of B5 blended biodiesel as long as the fuel meets ASTM D975 and D6751, however for biodiesel blends greater than B5, additional information and approval is required by Isuzu before these increased blends can be operated in your vehicle. The statements below are directly from the Isuzu Owners Manual. Please review them to further understand our support of these alternative fuels.

Biodiesel (B5)

It is acceptable to use diesel fuel containing up to 5% biodiesel (B5), but the final blended fuel must meet the same specification, ASTM D 975 (Grade Ultra Low Sulfur Diesel), as other fuels used in your vehicle, and the biodiesel used for making this fuel must meet the latest version of ASTM specification D 6751. Biodiesel is produced from vegetable oils or animal fat that have been esterified to reduce the possibility of damage to your fuel system and engine. The use of unesterified bio-oils blended into diesel fuel at any concentration is not approved by Isuzu and could damage your fuel system and engine.

Biodiesel (B6-B20)

Biodiesel blends between B6 and B20 could cause damage to your engine and fuel system if these fuels do not meet strict quality standards. ASTM D7467 has been established to specify the properties of B6 to B20 biodiesel blends. However, field quality surveys have shown that many commercially available B6 to B20 blends do not meet this standard and in fact can be very damaging to your engine. If you plan to use biodiesel grades between B6 and B20, please contact your Isuzu dealer.

Please consult your authorized Isuzu Dealer if you wish to operate biodiesel blends greater than B5. (Applicable on 2011MY and newer N-Series diesel models)

Aisin six-speed automatic transmission.

Standard on every 2011 Isuzu N-Series truck is an Aisin heavy-duty six-speed automatic transmission with PTO capability, engineered to work with the Isuzu diesel engine to achieve optimal performance and economy.

Lock-up torque converter

New for 2011, the lock-up torque converter operates in power take-off (PTO) mode. Under specifically determined engine conditions, when PTO mode is selected, the torque converter will lock up automatically to eliminate slip and deliver more power and better speed control for demanding power take-off applications.

Isuzu MZZ fully synchronized six-speed manual transmission with overdrive

In addition to the Aisin six-speed automatic, the proven Isuzu MZZ fully synchronized six-speed manual transmission with overdrive is optional in NPR-HD, NQR and NRR Standard Cab models.

More capability to haul your biggest loads.

The 2011 Isuzu NRR boasts a front axle crafted of higher-strength material along with increased-capacity steering gear to achieve a front GAWR of 7,275 lbs.—a 445-lb. improvement over its predecessor, for more loading flexibility and improved productivity.

Wheelbases from 109 to 212 inches

Isuzu N-Series trucks—with wheelbases from 109 to 212 inches—can accommodate bodies ranging from 10 to 24 feet in length. That means there’s an Isuzu truck for virtually any medium-duty need.

Hexapod cab

Only Isuzu offers the exclusive Hexapod design that maximizes interior space, optimizes comfort, and incorporates ingenious productivity and maintenance features.

The functionality of the Hexapod cab can save you time and money. All basic maintenance checks can be performed without ever having to tilt the cab:

  • The hydraulic brake fluid reservoir and windshield washer fluid container are located on the dash
  • Fuses are hidden behind a panel below the the dash, within easy reach and line of site of the driver
  • Even the truck’s engine oil and fuel level can be checked from inside the cab

Easy access to common service items means less downtime and lower maintenance costs.

Three-across seating

Every Isuzu N-Series truck offers three-across seating with ample head, leg and shoulder room. Crew Cab models accommodate an additional four passengers in back.

The center front passenger seat features a fold-down tray that can serve as a convenient in-cab work area for the driver. Pockets in the doors and seat backs provide convenient places to stow paperwork.

Choice of Standard Cab and Crew Cab models

In addition to the familiar Standard Cab configuration, Isuzu NPR-HD and NQR trucks are available as spacious Crew Cab models, offering GVWRs of 14,500 and 17,950 lbs. and wheelbases of 150 or 176 inches.

Best-in-class maneuverability

Curb to curb or wall to wall, Isuzu trucks are the most maneuverable in their class—and are far more nimble than any conventional truck could ever hope to be.

Tighter turning diameter

For 2011, Isuzu N-Series trucks reach new levels of agility over prior model years. A modified power steering system allows for wheel-cut angles up to 49.5 degrees. As a result, NQR and NRR drivers will enjoy an average 1.2-foot tighter turning diameter, while NPR models’ turning diameter improves 2.8 feet.

Multi-Information Display

Nestled in the instrument cluster of every 2011 Isuzu N-Series truck is a new means of monitoring vehicle performance and reducing maintenance costs and downtime—the Multi-Information Display (MID).

Isuzu is the first in its class to offer an MID that alerts drivers to conditions far beyond the scope of typical gauges and warning lights. With the touch of a button, the MID alerts drivers to the status of over a dozen functions:

  • Diesel exhaust fluid (DEF) level
  • Particulate matter emissions level
  • Estimated remaining life, in mileage, of engine, transmission, differential and steering oil, and engine oil and fuel filters
  • Fuel economy (average, instant and by trip)

Isuzu Vehicle Health Report

Every new Isuzu N-Series truck incorporates a powerful vehicle management tool as standard equipment.

The Isuzu Vehicle Health Report permits speedy and accurate service diagnosis, identifies component failure and wear history, maximizes vehicle uptime, and gives you the information you need to reduce your fuel usage. By asking your dealer to monitor your truck’s performance through Isuzu Vehicle Health Reports, your operating costs can be reduced and the long-term residual value of your truck can be increased.