Description Restore the performance and efficiency of your Cummins ISL 8.9 engine with the Rebuilt Fuel Injection Pump (3973228). Designed to deliver precise fuel pressure and flow, this high-quality pump ensures optimal combustion, reliability, and long service life under heavy-duty conditions. Each pump is professionally rebuilt and bench-tested to meet OEM Cummins specifications.This pump replaces OEM part number 3973228 and is compatible with select 2019–2022 Cummins ISL 8.9 (L9) engines. It is designed for newer electronic fuel systems and meets the requirements of modern emissions-compliant setups.Compatible Applications:Cummins ISL 8.9 / L9 engines (2019–2022)Freightliner, Kenworth, Peterbilt, and industrial equipment powered by Cummins ISL9 enginesOn-highway and vocational applications requiring Tier 4 Final fuel systems☎️ Need help confirming compatibility?Call us at (909) 639-4195, and our experts will verify the correct fit using your engine serial number (ESN).
