1. Product Description
The OEM reference 358612107 (and its direct supercession 358612107B) corresponds to a genuine, original equipment factory vacuum **Brake Booster (Brake Servo)** cataloged by the **Volkswagen Group (VAG)**. This safety-critical, 9-inch pneumatic power-assist unit plays a key role in vehicular braking dynamics by utilizing engine manifold vacuum pressure to multiply the force applied to the brake pedal. By reducing physical pedal effort, it ensures smooth, immediate response to the hydraulic master cylinder. It features a robust, rust-inhibited metal housing, long-life inner diaphragms, and integrated mechanical check valves manufactured to original equipment standards to eliminate hard-pedal or fading performance issues.
2. Technical Specifications
- OEM Part Number: 358 612 107 / 358 612 107 B
- Primary Equipment Manufacturer: ATE (Original factory supplier)
- ATE Article Reference: 03.7750-4902.4
- Technical Identification Code / Parameter: T52
- Booster Outer Diameter [inch]: 9.0 (approx. 229 mm)
- Operating Mode: Pneumatic / Vacuum assisted
- Brake System Configuration: Exclusively for vehicle configurations running ATE hydraulics
- Product Condition: Sourced as premium aftermarket matching original OE standards
- EAN Number: 4006633137973
3. Vehicle Compatibility
This 9-inch T52 pneumatic brake booster is engineered specifically for historical front-wheel-drive and four-wheel-drive platforms managed by the Volkswagen Group (VAG). It spans higher-specification compact, mid-sized, and sporty premium platforms produced throughout the late 1980s and 1990s.
| Car Model | Compatible Engines | Engine Power (hp / kW) | Year of Manufacture |
|---|---|---|---|
| VW Passat B3 / B4 (3A2, 35I, 3A5) / Variant Estate | 1.6, 1.8, 2.0, 2.0 16V, 1.6 TD, 1.9 D, 1.9 TD, 1.9 TDI | 68 - 150 hp / 50 - 110 kW | 1988 - 1997 |
| VW Golf II (19E, 1G1) / Jetta II (19E, 1G2) | 1.6, 1.8, 1.8 GTI, 1.8 Syncro, 1.6 TD (Late Facelift Models) | 70 - 112 hp / 51 - 82 kW | 1889 - 1992 |
| VW Corrado (53I) | 1.8 16V, 1.8 G60, 2.0 i, 2.0 i 16V | 115 - 160 hp / 85 - 118 kW | 1988 - 1995 |
| SEAT Toledo I (1L) | 1.6 i, 1.8 i, 2.0 i, 1.9 D, 1.9 TD, 1.9 TDI | 68 - 115 hp / 50 - 85 kW | 1991 - 1999 |
4. Factory Cross-Reference & Interchange Numbers
This premium original equipment part structure interchanges flawlessly across historical catalog divisions and alternative specialized brands:
- VAG Genuine OE Numbers: 358 612 107, 358612107, 358 612 107 B, 358612107B, 357 612 107 A, 357612107A
- ATE (Direct Manufacturer): 03.7750-4902.4 / 03775049024
- TRW Alternative Reference: PSA455