Bosch 0 986 017 770 Starter

BOSCH 0 986 017 770 Starter Motor

The Bosch 0 986 017 770 Starter is a high‑performance electric starter designed for modern internal combustion engines in a wide range of vehicles, including Alfa Romeo, Fiat, and Lancia models. This component delivers reliable ignition power with a rated output of 1.1 kW (12 V), ensuring swift engine start-up even under demanding conditions.

Key Technical Specifications

• Model Number: 0 986 017 770
• Power Output: 1.1 kW (12 V)
• Rotation Direction: Clockwise, self‑supporting
• Compatibility: Engine models for Alfa Romeo, Fiat, and Lancia vehicles such as the Spider, 147, GTV, Punto II, Bravo, and many others.
• Mounting Type: Standard starter motor mounting with integrated gear set
• Operating Temperature Range: -40 °C to +120 °C (typical automotive range)
• Weight: Approximately 1.5 kg, facilitating easy installation and replacement.

Design Features & Engineering Excellence

The starter motor incorporates Bosch’s proprietary high‑density copper windings, which provide superior electrical conductivity while minimizing weight. The stator core is constructed from low‑loss silicon steel sheets, reducing hysteresis and eddy current losses for efficient operation.

A robust sealed bearing assembly ensures long life under high rotational speeds, typically up to 10 000 rpm during engine cranking. The gear set is engineered with a precision tooth profile that matches the flywheel teeth of compatible engines, guaranteeing smooth engagement and minimal wear.

The motor’s housing features an integrated thermal protection circuit. If operating temperatures exceed safe limits, the circuit automatically interrupts current flow to prevent overheating, thereby protecting both the starter and the vehicle’s electrical system.

Installation & Compatibility

Installing the Bosch 0 986 017 770 Starter is straightforward for technicians familiar with standard automotive starter systems. The motor fits into the engine bay using a single mounting bracket and requires connection to the vehicle’s battery via a dedicated high‑current cable.

• Vehicle Compatibility: Designed for use in Alfa Romeo, Fiat, and Lancia models that employ a 12 V electrical system and require a starter motor with a 1.1 kW output.
• Electrical Connection: Connect the positive terminal to the battery’s main supply; the negative terminal is bonded to the engine block or chassis ground.
• Starter Relay: A compatible starter relay should be installed in the vehicle’s fuse box, providing a controlled power path to the motor during cranking.

Performance & Reliability

The Bosch 0 986 017 770 Starter delivers consistent performance across a wide temperature range. Its high torque output ensures that engines start quickly, even after prolonged periods of inactivity or in cold climates.

Because the motor is engineered with high‑quality materials and precision manufacturing processes, it exhibits low vibration levels and minimal noise during operation. This contributes to an overall smoother driving experience and reduces wear on surrounding components.

Maintenance & Longevity

Routine maintenance for the starter motor is minimal, as Bosch designs the component to be a maintenance‑free part. However, technicians should periodically inspect the mounting bolts for tightness and verify that the electrical connections remain secure.

In the event of a failure—such as a loss of torque or abnormal noise—the starter motor can typically be replaced without affecting other vehicle systems. The design allows for quick removal and installation, minimizing downtime for service centers.

Applications Across Vehicle Models

• Alfa Romeo Spider, 147, GTV, Bravo, and various other models
• Fiat Punto II (3/5‑door), Barchetta, and related Lancia vehicles such as the Dedra 95‑12
• Engine types that require a 1.1 kW starter motor with clockwise rotation

These applications demonstrate the starter’s versatility across multiple brands while maintaining consistent performance standards.

Conclusion

The Bosch 0 986 017 770 Starter Motor exemplifies Bosch’s commitment to quality, reliability, and engineering precision. Its robust construction, high torque output, and compatibility with a broad range of Alfa Romeo, Fiat, and Lancia vehicles make it an ideal choice for automotive professionals seeking dependable engine start-up solutions.

Whether you are servicing a classic Alfa Romeo Spider or maintaining a modern Fiat Punto, the Bosch 0 986 017 770 Starter delivers the performance and durability required to keep engines running smoothly across diverse operating conditions.