Pronunciation: eye‑ess‑ell nine
A Sexy and Robust 8.9-liter inline-six diesel engine made by Cummins, known for being tough, dependable, and built to haul serious weight. Found in everything from motorhomes to fire trucks, the ISL9 is basically the workhorse of the medium- and heavy-duty world. Outputs range from 260 to 450 horsepower with up to 1,250 lb-ft of torque, making it a favorite for anyone who refuses to break down on the job.
Key Features:
8.9L inline-six
260–450 hp, up to 1,250 lb-ft torque
XPI fuel system + VGT turbocharger
Perfect for motorhomes, buses, fire trucks, and medium-duty trucks
Known for durability, efficiency, and extreme-condition reliability
A Sexy and Robust 8.9-liter inline-six diesel engine made by Cummins, known for being tough, dependable, and built to haul serious weight. Found in everything from motorhomes to fire trucks, the ISL9 is basically the workhorse of the medium- and heavy-duty world. Outputs range from 260 to 450 horsepower with up to 1,250 lb-ft of torque, making it a favorite for anyone who refuses to break down on the job.
Key Features:
8.9L inline-six
260–450 hp, up to 1,250 lb-ft torque
XPI fuel system + VGT turbocharger
Perfect for motorhomes, buses, fire trucks, and medium-duty trucks
Known for durability, efficiency, and extreme-condition reliability
"My RV runs on an ISL9—this thing can go coast to coast without breaking a sweat."
"Fire trucks love the ISL9; when lives are on the line, there’s no room for weak engines."
“This 2011 New Flyer XD60 powered by this Godly Cummins ISL-9 Sounds so amazing that it makes my Girl’s Tits hard”
"Fire trucks love the ISL9; when lives are on the line, there’s no room for weak engines."
“This 2011 New Flyer XD60 powered by this Godly Cummins ISL-9 Sounds so amazing that it makes my Girl’s Tits hard”
by EMD F59PHI October 24, 2025
Get the Cummins ISL-9mug. by Verysloppywaffle April 24, 2022
Get the Cumminermug. When you suggest a wager on something you have researched for weeks and no full well that your mates don’t stand a chance on.
Him: Hey! Wanna put a bet on the premier league dream team this season?
You: Are you just gonna do your usual Cummins on us and make us all look like incompetent tits!?
Him: No, I promise we all have a fair shot
You: Yeah fucking right!
You: Are you just gonna do your usual Cummins on us and make us all look like incompetent tits!?
Him: No, I promise we all have a fair shot
You: Yeah fucking right!
by soreloserthesecond November 15, 2019
Get the Cumminsmug. 
A “Lenny Cummins” is someone who, although gentlemanly, has sex with an abundance of women, as is implied in the name.
“God, did you hear how many girls Jeff has been with, he’s such a respectful guy, I never would’ve thought, I guess he’s a real Lenny Cummins type.
by Photonatron November 18, 2022
Get the Lenny Cumminsmug. Somone who cant grow hair, not because they have cancer or progeria, but because they suck, and even they’re own body recognizes that they do not deserve hair or food or love."
by Ppoopoo April 26, 2024
Get the Cumminsmug. cuming into that tight pussy
by BumStatusYo December 15, 2018
Get the #cumminmug.