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Keeping Your Cummins 4B3.9-D20/24KW Diesel Engine Running Strong Your Cummins 4B3.9-D20/24KW diesel engine is a workhorse, known for its reliability and power. To ensure it keeps delivering peak performance for years to come, regular maintenance is key. Think of it as preventative care that saves you time and money in the long run. Here’s a […]