Skip to content

Cummins Retunes ISX11.9 for Better Economy, Renames It ISX12


By Tom Berg, Senior Editor

Engineers at Cummins have retuned their-heavy duty ISX11.9 diesel for better performance and fuel economy, and marketers have stepped up promotion of the engine by renaming it the ISX12.

Recalibrating the engine’s controls has resulted in fuel economy betterments of up to 5% in road tractors and as much as 12% in vocational applications, the company said. The calibration work is electronic and the engine is physically the same as when it was introduced for 2010.

The new rounded-up numerical designation is in line with those for Cummins’ other heavy-duty truck engine products, like the ISL9 and ISX15, and is easier to read and say than the old 11.9 name, representatives said.

In Cummins’ lineup chronology, the ISX11.9 replaced the similarly sized ISM that had succeeded the L10. The ISX12 continues to fill that role in engine size, but its design is based on the big-bore ISX15.

The ISX12 has on-highway ratings from 310 horsepower and 1,150 pounds-feet to 425 horsepower and 1,650 pounds-feet, plus variable Smart Torque ratings of 1,250-1,350 to 1,450-1,650 pounds-feet Vocational ratings start at 320 horsepower and go to 425, with torque outputs of 1,150 to 1,650 pounds-feet.

Torque output at clutch engagement is a strong 800 pounds-feet, making the ISX12 an excellent engine for refuse, construction and other vocational applications, the company said. Integrated rear- and front-engine power take-off drives are available.

More information is available at Cummins dealers, at www.cumminsengines.com or by calling 1-800-DIESELS (1-800-343-7357).

Printer Friendly Version
Email This Story
RSS
Bookmark and Share

Engines Transmissions: Related News

1/27/2012 – Cummins Retunes ISX11.9 for Better Economy, Renames It ISX12

Engineers at Cummins have retuned their-heavy duty ISX11.9 diesel for better performance and fuel economy, and marketers have stepped up promotion of the engine by renaming it the ISX12….
More

1/26/2012 – Volvo Trucks Expands XE13 Horsepower Offering

When Volvo Trucks introduced its XE13 “exceptional efficiency” integrated powertrain package last September, it only was available with a 425-horsepower rating. Today it announced it had added a 455-horsepower rating for the XE13….
More

1/24/2012 – Allison Transmission 1350 Model Adds Towing Ability

Allison Transmission released its new 1350 model, which will provide an option within its 1000 Series models for towing capacity of up to 30,000 pounds….
More

1/18/2012 – Eaton Extends Standard Warranty for Reman Transmission Vocational Models

Eaton extended the warranty coverage for its Eaton Fuller Reman and Eaton Fuller Flex Reman vocational transmissions from 18 months to two years….
More

1/16/2012 – Bergstrom Launches Next Generation Heater Control Valve

Bergstrom Inc. released a new heater control valve that features a more robust design and increased versatility….
More

1/11/2012 – Kustom Cooling Announces Line of Aluminum Radiators and A/C Condensers

Kustom Cooling Products has released of a line of radiators and a/c condensers that are 100% aluminum….
More

12/16/2011 – Experienced Assembler Offers Parts Packages for Glider Kits

Packages of parts needed to complete the assembly of truck glider kits are offered by Kustom Products of Coos Bay, Ore. …
More

JOIN OUR NEWSLETTER
I agree to have my personal information transfered to MailChimp ( more information )
Join over 3.000 visitors who are receiving our newsletter and learn how to optimize your blog for search engines, find free traffic, and monetize your website.
We hate spam. Your email address will not be sold or shared with anyone else.
Tax, Accounting, Consulting - Emil Estafanous, CPA, CFF, CGMA