The SM 4489 is a precision-engineered Self Starter Rocker Assembly (Brush Holder) specifically designed for the Chevrolet Optra Petrol (1.6L and 1.8L variants). Utilizing a compact Bosch-style (B.TYPE) architecture with a high-efficiency 4-brush configuration, this assembly is built to support the D-TEC and E-TEC petrol engine platforms. It is optimized for the rapid, high-speed cranking required for petrol ignition systems.
SM 4489
Brand: Yessem Grand
Part Type: Starter Motor Brush Holder / Rocker Assembly
Design Type: Bosch Type (B.TYPE)
Configuration: 4 Brushes (Pre-installed)
Compatibility: * Chevrolet: Optra 1.6, Optra 1.8, and Optra Royale (Petrol models).
Engine: Optimized for GM Family 1 and Family II petrol engines.
Starter: Optimized for Bosch-style compact gear-reduction starters.
Material: Heat-Stabilized Phenolic Resin with Premium Copper-Graphite Brushes.
