Caterpillar 30A4000103 Oil Filter

Caterpillar 30A4000103 Oil Filter, also cataloged as 30A40-00103, is a replaceable engine oil filter used to remove particulates from lubrication oil and protect engine components in heavy‑duty equipment. The two part numbers refer to the same filter across catalogs, with 30A40-00103 listed as the direct OE reference in interchange guides. OEM‑equivalent listings from aftermarket suppliers show this filter aligned with brands such as MANN‑FILTER and BOSCH under the 30A40-00103 designation, reflecting broad cross‑compatibility across manufacturers. This filter is commonly referenced for Mitsubishi, Case, and Schaeff equipment, where the 30A40-00103 cross‑reference is used to ensure correct fit and filtration performance. For proper replacement, verify the fit against your machine’s service manual and the OEM cross‑reference lists from reputable suppliers to confirm compatibility with the 30A4000103 / 30A40-00103 designation.