The SL11625 piston pin plug is a small sealing and retention component used in aircraft piston assemblies. It is installed at the ends of the piston (wrist) pin bore to retain the piston pin in position and prevent lateral movement or contact with the cylinder wall during engine operation.

It also helps reduce oil leakage into the piston pin area and supports proper lubrication control inside the piston assembly.

Key features include:

PMA piston pin (wrist pin) plug
Precision-formed lightweight metal or composite design (variant dependent)
Retains piston pin within piston assembly
Prevents lateral movement of wrist pin
Reduces oil migration into piston pin bore area
Designed for high-RPM reciprocating engine loads
Oil- and heat-resistant construction
Compatible with Continental piston engine configurations (model-dependent IPC use)
Used in piston assembly during engine overhaul or rebuild
Aviation-grade internal engine component