40
SUPPORTING ARM ., FROM ENGINE 257735-999999 YEAR OF MANUFACTURE 1977-1990 ALSO INSTALLED ON FROM ENGINE 100001 YEAR OF MANUFACTURE 1990 244677-254702,255046-255055,256062-256069,256240-256248,256351-256358,256494,256495,256553-256559, 256593-256601,256800-256808,256848-256892,257025-257032,257173-257181,257347-257355.