Porsche Flywheel Ring Gear, 911 (70–85) – 911-116-239-04-OEM | OEM Replacement Gear

Restore your Porsche’s starting performance with the Flywheel Ring Gear (911-116-239-04). This genuine OEM replacement gear provides a precise interface between the starter motor and flywheel, ensuring smooth, reliable engine starts every time. Designed for Porsche 911 models produced between 1970 and 1985, this ring gear delivers factory-level durability and perfect fitment for both restorations and rebuilds.

Key Features

• Genuine OEM Porsche Part – Designed to exact factory specifications for flawless compatibility and performance

• Perfect Fitment – Compatible with Porsche 911 models built between 1970 and 1985

• High-Strength Steel Construction – Heat-treated for maximum durability and resistance to wear

• Precision Machined Teeth – Ensures accurate starter gear engagement and smooth cranking

• Engineered for Longevity – Built to withstand the stress of high-performance starting cycles

• Ideal for Rebuilds or Repairs – Recommended for engine restorations or when replacing a worn flywheel gear

Frequently Asked Questions (FAQ)

Q: What is the purpose of the flywheel ring gear?
A: The flywheel ring gear transfers power from the starter motor to the engine, allowing the engine to crank and start properly.

Q: Which Porsche models does this fit?
A: This ring gear fits Porsche 911 models manufactured between 1970 and 1985.

Q: Is this part OEM or aftermarket?
A: It is a genuine OEM Porsche component built to factory standards.

Q: When should I replace my flywheel ring gear?
A: Replace it if you notice worn, chipped, or damaged teeth, or if the starter slips or grinds during startup.

Q: Can I install this without replacing the entire flywheel?
A: Yes, the ring gear can be replaced separately, but it requires removing the flywheel and proper heating for installation.

Q: What material is it made from?
A: The ring gear is made from high-strength, heat-treated steel for durability and precise starter engagement.

Q: Does it require special installation tools?
A: Installation typically requires heating the gear to expand it for press-fitting onto the flywheel. Professional installation is recommended.

Q: Is this part covered by a warranty?
A: Most OEM Porsche parts include a limited manufacturer warranty. Check with your supplier for specific terms.