WOSP Lightweight High Torque Starter Motor - Mercedes 300SL (W198) - Denso Type 1.4Kw Output

The WOSP lightweight high torque starter motor is specifically engineered to deliver consistently reliable starting performance for demanding applications, particularly those involving high-performance and high-compression engines. This unit offers a significant upgrade over original equipment starters, providing increased cranking power without compromising electrical system integrity.

This starter utilises a gear reduction design built upon established OE platforms, ensuring both durability and compatibility. The core principle behind this design is to amplify torque output, crucial for engines that require substantial turning force during the starting sequence. It’s particularly well-suited to classic Mercedes-Benz models like the 300SL (W198) where maintaining originality alongside enhanced performance is paramount.

Key Features & Technical Details:

• Gear Reduction Drive: The integrated gear reduction system effectively multiplies torque, capable of delivering up to double the cranking power compared to conventional starter motors. This ensures positive engine starts even with high compression ratios and in challenging ambient conditions.
• Reduced Current Draw: Engineered for efficiency, this starter draws up to 50% less current than standard units. This lower amperage demand minimises stress on the vehicle’s electrical system – including the battery and wiring harness – potentially allowing continued use of existing components without requiring costly upgrades.
• Lightweight Construction: Weight optimisation is a key design consideration. By utilising advanced materials, this starter achieves up to a 50% reduction in mass compared to original equipment starters. Reducing rotational weight contributes positively to overall vehicle performance and responsiveness.
• 360° Rotational Mounting: Installation flexibility is enhanced by the fully adjustable mounting system. The unit can be rotated through a full 360 degrees, allowing for optimal positioning within confined engine bays or in custom installations where space is limited. This adaptability simplifies integration into various chassis configurations.
• Enhanced Thermal Resistance: The starter motor’s construction incorporates materials and design features that maximise heat dissipation. This mitigates the risk of thermal soak – a common issue with high-output starters – ensuring consistent performance during extended cranking cycles or in hot operating environments.
• High Vibration Tolerance: Designed to withstand the rigours of motorsport and demanding road use, this starter is engineered for exceptional durability. Internal components are robustly mounted and secured to minimise the effects of vibration, extending service life and maintaining reliable operation.
• OE-Based Platform: The design leverages original equipment specifications wherever possible, ensuring a high degree of compatibility and reliability. This approach also simplifies servicing and maintenance, as many components may be interchangeable with those found in standard starters.
• Fully Serviceable Design: Unlike some modern starter motors, this unit is designed to be fully disassembled for inspection, repair, and rebuild. This feature extends the lifespan of the motor and provides a cost-effective alternative to complete replacement.
• Warranty: Supplied with a 12-month manufacturer’s warranty, providing assurance of quality and performance.

The WOSP starter is more than just an upgrade; it’s a carefully engineered solution for owners who demand the highest levels of reliability and performance from their vehicles. It addresses common weaknesses in original equipment starters while maintaining compatibility and ease of installation.

Bespoke Manufacturing: WOSP specialises in custom starter motor manufacturing. If your application is not listed, or you require a unique specification, please contact WOSP directly at [email protected] to discuss your requirements.

Fitment Information:

• Mercedes 300SL Gullwing (W198) – M198 engine, 2996cc (January 1953 – May 1957)
• Mercedes SL (R198) 300SL – 2996cc (May 1957 – February 1963)
• Mercedes 220 Cabriolet A (W187) – ‘51-’52

This starter motor is a direct replacement for the original unit in the specified Mercedes-Benz models, offering improved performance and reliability without requiring significant modifications.