Turn every press of the brake pedal into hydraulic braking pressure with this Kia Optima master cylinder from Dorman First Stop, part number M630192. It is a direct-fit replacement for the 1999-2005 Hyundai Sonata, 2001-2002 Kia Optima and 2002 Hyundai XG350 (engine: All), one per vehicle. It is designed to match the original master cylinder's design, function and performance on these applications, and is made from new, high-quality materials.
- Precise replacement: The aluminum cylinder housing is built to match the casting material of the original part for similar performance.
- Durable design: All rubber components use a high-quality EPDM compound that resists glycol-based brake fluid.
- 100% new: Made entirely of new materials, with quality and safety in mind.
- Strict specifications: Made to meet rigorous SAE International standards.
Specifications: 1 in. bore diameter; two outlets; M10 x 1.0 rearward outlet size; M10 x 1.0 secondary outlet thread diameter; 1 mm primary outlet thread pitch. The reservoir and sensor are included. Mounting hardware is not included, so consult the vehicle service information for the correct fasteners and whether the originals may be reused. Country of origin: China.
Signs that a master cylinder may need replacing include a soft or sinking brake pedal, fluid leaking at the master cylinder, or a steadily dropping fluid level. Other brake components can cause the same symptoms, so diagnose the system before replacing this part. Bleed the brake system after installation according to the vehicle service procedure.
Interchange: 83-16721 · 100-2032 · M-52721 · 072-9447 · 13-3302 · 11-3302 · 130.51021 · 355-03021
8316721 · 1002032 · M52721 · 0729447 · 133302 · 113302 · 13051021 · 35503021 · MC511820 · 5851038304 · M55153 · NM55153 · MC390726 · F141145 · MC141145
This part cross-references / interchanges with the following part numbers:
83-16721, 100-2032, M-52721, 072-9447, 13-3302, 11-3302, 130.51021, MC511820, 355-03021, 5851038304, M55153, NM55153, MC390726, F141145, MC141145
