Alternator DiodeThis aftermarket diode assembly - alt is an electrical replacement part for forklift starting, charging, or ignition systems. Electrical specialists install it when the existing unit tests out of spec or fails on a no-start, no-charge, or rough-run complaint. Matching the correct voltage and rotation is critical for proper fitment. SCR Forklift Parts carries AC1172891 so shops can finish electrical diagnostics with a known-good replacement on hand. Whittier-area shops and out-of-state customers order AC1172891 from SCR Forklift Parts to keep service tickets moving without delay on the right replacement part.Aftermarket replacement part, cross-references original part number AC1172891.Need help confirming fit? Call (562) 693-7748 with your serial number.Part number variants: AC1172891, ac1172891 ⚠ Warning: Some equipment has serial-number breaks that may not be reflected in the catalog. Contact us for clarification before ordering if uncertain.SCR Forklift Parts ships from Whittier, CA with next-day delivery available across the US when needed.