OEM Plug 21Mm - Expansion 21 Mm O.D. #A77506 - OEM Direct-Fit Repair Part for Case Construction Equipment This service part restores OEM functionality after wear leads to repair of worn, damaged, or failed OEM components on heavy equipment, often accompanied by worn components, broken parts, and replacement-driven repair needs. Well suited to OEM replacement part, heavy equipment repair, Case construction service, and direct-fit maintenance replacement maintenance and replacement workflows. More Details Part Number: A77506 Application: OEM replacement component used in heavy equipment repair when the original part is worn, damaged, missing, or no longer serviceable. Key Features: Built to replace worn or damaged OEM components during service work Supports maintenance repairs aimed at returning equipment to working condition OEM-style fit for straightforward replacement and service installation Fits Case Models: Compatible with various Case construction equipment models - verify fitment before ordering Replaces: Refer to manufacturer cross-reference if applicable