This is a A-33A80 Valve, Exhaust PN: 33A80Main Description As Following : A-33A80 Valve, Exhaust P.N: 33A80 W/ 45 DEGREE ANGLE Replaces: A-AJR4042 LEYLAND-MARSHALL , VPA1070 MISCELLANEOUS , A-31431271 PERKINS ENGINE PARTS , A-31431591 PERKINS ENGINE PARTS , A-72080047 ALLIS CHALMERS , A-737640M1 MASSEY FERGUSON , Crossed From: AV101866 VAPORMATIC , HCM31431591 , , 1209-9211 , , A-737640M1 , Found in Section & Models : Engine Parts > 3.152, Leyland TRACTOR: 245, Leyland TRACTOR: 253 Associated Items : New Also A-LEY-O-245, A-LEY-S-245253, A-LEY-S-245253 And : w/ 45 Degree Angle