Contitech CT919 Timing Belt

Contitech CT919 Timing Belt – Precision Engineered for Audi and Volkswagen

The Contitech CT919 Timing Belt is a high‑performance cam belt designed to deliver reliable synchronisation between the crankshaft and camshafts in a wide range of Audi and Volkswagen engines. With its robust construction, precise tooth geometry, and proven durability, this belt is the go‑to replacement for original equipment (OE) timing belts on models such as the Audi A4, A6, Passat, and their Volkswagen counterparts.

Key Technical Specifications

• Teeth Count: 153 teeth – engineered to match the exact gear ratios of the original belt.
• Material Composition: Premium reinforced rubber with a high‑temperature silicone coating, ensuring resistance to heat and oil contamination.
• Width: Standard 25 mm (1.0 in) – compatible with most European Audi/VW engines.
• Length: 153Z – the “Z” designation indicates a specific tooth profile for optimal engagement.
• Drive Type: Cranked cam drive – suitable for single‑cam and dual‑cam configurations.

Engine Compatibility Matrix

The CT919 belt is engineered to fit the following engine families. Always verify with your vehicle’s VIN or service manual before installation.

Why Choose the Contitech CT919?

• OEM Quality Assurance: Manufactured to meet or exceed original equipment specifications, ensuring seamless fit and performance.
• Durability Under Stress: The reinforced rubber core resists elongation and cracking even under high operating temperatures.
• Precision Tooth Geometry: Each tooth is laser‑cut to guarantee perfect engagement with the camshaft gear, reducing wear on both components.
• Easy Installation: Designed for quick belt replacement – no special tools required beyond standard engine bay access.
• Long Service Life: Typical lifespan of 60,000–100,000 miles (or 5–7 years) depending on driving conditions and maintenance practices.

Installation Guide

Replacing a timing belt is a critical service that requires careful attention to detail. Follow these steps for the Contitech CT919:

1. Preparation: Disconnect the battery, drain coolant if necessary, and remove any components obstructing access to the crankshaft pulley.
2. Align Reference Marks: Rotate the engine until the crankshaft** and camshaft reference marks align with the factory‑set positions. This ensures correct timing after belt replacement.
3. Remove Old Belt: Loosen the tensioner pulley, slide the old belt off, and discard it properly.
4. Install New Belt: Place the CT919 belt onto the crankshaft pulley first, then route it over the camshafts following the manufacturer’s diagram. Ensure each tooth sits snugly on its gear.
5. Tension Adjustment: Re‑engage the tensioner and verify that the belt has the correct tension (typically a slight give when pressed with a finger).
6. Re‑check Alignment: Rotate the engine manually by hand to confirm that the reference marks remain aligned after installation.
7. Final Checks: Reinstall any removed components, refill coolant if drained, and reconnect the battery. Start the engine and listen for abnormal noises; a properly installed belt should run silently.