The SM 4904 is a precision-engineered Starter Drive (Self Drive) designed specifically for Honda’s compact car segment, often referred to as the SRF Car platform (Small Rear-engine/Front-wheel drive chassis architecture). Utilizing the refined DEN.TYPE (Denso-style) architecture, this unit features an 8-tooth pinion and a 10-spline internal configuration. It is precision-calibrated for the high-efficiency planetary gear reduction starters found in Honda’s i-VTEC engines.