Champion M1458 Crankshaft For Air Compressor Replacement

Champion M1458 Crankshaft is a genuine OEM replacement part for the Champion R-Series air compressors, designed specifically for the R40A two‑stage pump. The part number M1458 identifies this crankshaft and it is listed in Champion’s service literature as the replacement crankshaft for the R40A pump family, with some listings noting an OEM‑machined variant. The M1458 is referenced in manuals associated with the R40A and related R-Series models (including the HRA15-12 crankshaft group), confirming its role as the correct crankshaft for R40A installations. This crankshaft is used to replace a worn or damaged crankshaft in Champion R-Series compressors, delivering the precise timing and alignment necessary for proper piston and connecting rod operation in two‑stage pumps. Sold through Champion‑authorized distributors and OEM catalogs, M1458 is the specific crankshaft variant required for R40A and closely related models, ensuring a correct fit with the pump’s crankcase, flywheel, and associated components in the R40A family.