The ISL has been redesigned to deliver stronger acceleration, greater durability and dependable performance that you need for your transit bus requirements. A new High-Pressure Common-Rail (HPCR) fuel system, combined with advanced engine control management and our patented VG Turbo (ISL 330 rating only), produces strong engine response across the entire rpm range. Plus, this new ISL runs up to 50% quieter than previous models.
Transit managers trust the ISL for reliable performance with the lowest maintenance costs of any engine in its class. Three ratings are available, all with outstanding fuel economy.
With new features like heavy-duty roller followers, targeted piston cooling and 30% more efficient oil cooling, the ISL is designed to keep your buses on the road every day, every month and every year for years to come.
The advanced technology of the ISL allows it to meet EPA regulations. Cummins also offers hybrid-ready versions of the ISL.
In addition to our comprehensive base warranty, we offer a range of extended coverage plans for up to 5 years or 500,000 miles (804,672 km). Plus, it's backed by the biggest customer support network in North America.
For the latest news and technical advice on the ISL, sign up for our Bus News online newsletter today.
If you would like to hear what customers have to say about the dependability of the ISL, see Long-Term Decision for Oahu Transit.
For detailed information on Cummins ISL, download our ISL Transit Bus Brochure.
