The connecting rod (CR) is the main moving parts and an important component of engine. If the reliability isnot strong enough, fatigue failure of the CR would occur, thereby leading to component fracture and engine failure. Somuch so that CR fracture. It will lead to engine fault as well as serious outcome. In this paper, stress distribution andfatigue life of CR in light vehicle engine were analyzed using the commercial 3D finite element software, ANSYSTM. Theresults showed that the medial surface of small end will be the critical surface whereby damage will initiate at themaximum stretch condition. The maximum stress and deformation values are 190.23 MPa and 0.0507mm respectively.The critical location is at the transition region between the big end and connecting shank at maximum compressioncondition. The maximum stress and deformation values are 459.21 MPa and 0.0702283 mm respectively. Safety factor is1.584. In order to increase the reliability of CR, some improvement is carried out. Safety factor of CR increases by 59%.
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