Heavy-duty truck or equipment owners, listen up. If you've got a Cummins 8.3L or 8.9L engine (like the ISC, ISL, QSC, or 6CTA series from around 1997-2012) and it's overheating or leaking coolant, the water pump might be the problem. This replacement pump fits a ton of applications. It replaces a bunch of OE part numbers, including 3973114, 3286293, 5291445, and 4309418. You'll find this pump on a huge range of vehicles: Freightliner Business Class M2, FL60, FL70 trucks; Peterbilt 320, 330, 357 models; Kenworth T300, T370; Sterling Acterra trucks; and even big agricultural equipment like Case IH and New Holland tractors and combines. Seriously, check the massive fitment list in the description against your specific machine. It's a critical part that circulates coolant to keep your expensive diesel engine from cooking itself. If you're a mechanic or a savvy owner-operator, this is a standard maintenance item. Make sure you get the right gasket or seal (sometimes included, sometimes not) and coolant for the job. Don't let a failed water pump leave you stranded or cause major engine damage.
