A cup-type expansion plug that seals the oil passage at the end of the hollow rocker arm shaft. The Dorman - Autograde Engine Rocker Arm Shaft End Plug (555-008) is a steel press-in plug whose mechanical job is to cap the open end of the rocker shaft so pressurized oil routed through the shaft stays inside and feeds the rocker arms rather than escaping. It is sized to fit a range of classic Buick, Chevrolet, GMC, Oldsmobile and Pontiac engines.
- Direct replacement engineered to seat and seal like the original plug, dropping into place of the OE part across every covered year, make and model
- Steel construction built from quality material for a durable press-in part
- Cup-type expansion design that drives into the end of the shaft and works to seal the oil passage
- Service part designed to replace an original plug that has gone missing or failed from age and fatigue
- Precision-sized with a 0.558 in. minimum and 0.574 in. maximum diameter for a secure press fit
Oil weeping from the end of the rocker shaft, a missing or backed-out plug, or an upper-engine oil leak can be signs this plug may need replacing. Note that an upper-engine leak can have other sources, so professional diagnosis is wise; if a failed or missing rocker shaft end plug is the cause, this part replaces it.
Fits: 1946-1963 Chevrolet, 1946-1963 GMC, 1946-1963 Pontiac, 1946-1950 Oldsmobile, 1962-1963 Buick, 1971-1977 Chevrolet, 1975-1977 Pontiac, 1976-1977 Oldsmobile. See the Buyer's Guide tab to confirm your exact vehicle.
Replaces / cross-references: 31551 · 3462871 · 1480819 · 518026 · 835560 · 260-118 (260118) · EPC-166 (EPC166) · EPC-209 (EPC209) · EPC48-25 (EPC4825) · manufacturer part number 555-008 · Part Eazy SKU P0735PA-555-008
This part cross-references / interchanges with the following part numbers:
31551, 3462871, 1480819, 518026, 835560, 260-118, EPC-166, EPC-209, EPC48-25
