| MATERIAL | ALUMINUM |
| DIAMETER | 3.625 INCHES NOMINAL |
| OVERALL HEIGHT | 3.750 INCHES NOMINAL |
| SURFACE FINISH | FINISHED |
| FINISHED SIZE DESIGNATION | STANDARD |
| WEIGHT | 18.250 OUNCES |
| HEAD STYLE | FLAT |
| SKIRT TYPE | FULL SPLIT |
| SKIRT BOTTOM CUTAWAY FEATURE | NOT INCLUDED |
| SKIRT SLOT STYLE | BASE TO GROOVE SLOT |
| RING GROOVE QUANTITY | 4 |
| RING GROOVE WIDTH | 0.1255 INCHES MINIMUM AND |
| 0.1265 INCHES MAXIMUM 1ST RING |
| 0.1890 INCHES MINIMUM AND |
| 0.1900 INCHES MAXIMUM 2ND RING |
| RING GROOVE DIAMETER | 3.263 INCHES MINIMUM 1ST RING |
| 3.273 INCHES MAXIMUM 2ND RING |
| 3.223 INCHES MINIMUM 3RD RING |
| 3.233 INCHES MAXIMUM 4TH RING |
| CARBON GROOVE | NOT INCLUDED |
| OIL GROOVE | NOT INCLUDED |
| DISTANCE FROM PIN HOLE CENTER TO EXTREME TOP | 1.998 INCHES MINIMUM AND |
| 2.002 INCHES MAXIMUM |
| PIN HOLE BUSHING | NOT INCLUDED |
| PINHOLE DIAMETER | 0.9370 INCHES MINIMUM AND |
| 0.9375 INCHES MAXIMUM |
| DISTANCE BETWEEN PIN BOSSES | 1.562 INCHES NOMINAL |
| RETAINING RING GROOVE | INCLUDED |
| PIN | NOT INCLUDED |
| PIN TYPE FOR WHICH DESIGNED | FLOATING |
| RING | NOT INCLUDED |
| FSC APPLICATION DATA | GASOLINE RECIPROCATING ENGINE,EXCEPT AIRCRAFT PRIME MOVING AND STARTING ENGINE TYPES |
| THE MANUFACTURERS DATA | |
| MANUFACTURERS CODE | 66289 |
| DESIGN CONTROL REFERENCE | DB-172-C |