KIRKLAND, Wash. — Kenworth, a PACCAR company, has added two new ratings for the 12.9-liter PACCAR MX-13 engine available for the Kenworth T680, T880 and W990. The PACCAR MX-13 engine brings efficiency and flexibility together into one, high-performance solution, according to Kurt Swihart, Kenworth marketing director.
The first new rating of 405 hp and 1,650 lb-ft of torque provides constant power for line haul applications, enhances integration with the PACCAR Powertrain, and offers increased fuel efficiency.
The second is a multi-torque 455 hp rating with 1,650/1,850 lb-ft of torque that is optimized for fuel-conscious heavy haul fleets and truck operators. This rating provides additional torque in the top two gears while pulling a load up a hill, eliminating the need to downshift.
As a result, the PACCAR MX-13 engine now offers ranges of 405 to 510 hp and 1,450 to 1,850 lb-ft of torque.
“These new PACCAR MX-13 ratings provide enhanced fuel efficiency and lower operating costs for our customers,” Swihart said.
In addition, Kenworth now offers a variable speed fan clutch as on option for the 10.8-liter PACCAR MX-11 engine for the Kenworth T680 and T880. The clutch maximizes engine power to the drive axle, helps prevent under- and over-cooling in all climates, and provides faster warm-up and more efficient air conditioning. The PACCAR MX-11 engine features superior performance, a powerful and lightweight design, and ranges of 355 to 430 hp and 1,250 to 1,650 lb-ft of torque.
“The PACCAR MX engine series has a B10 design life of one million miles in line haul applications. This means 90 percent of PACCAR Engines will log up to one million miles without a major overhaul, almost double the life of a comparable engine,” Swihart said. “The PACCAR MX engine series has been well-accepted by fleets and truck operators in the United States and Canada since introduction nine years ago.”
Peterbilt, another PACCAR company, announced late last year it would offer the new ratings.
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