VAICO V10-0276 Coolant Flange

VAICO V10-0276 Coolant Flange

The VAICO V10-0276 Coolant Flange is a precision‑engineered component designed to fit the front cylinder head of a wide range of Volkswagen, Audi, Seat, Skoda and other VAG group vehicles. This flange serves as the critical junction where the coolant system connects to the engine block, ensuring a leak‑free seal under high pressure and temperature conditions.

Key Functional Characteristics

• High‑Temperature Resistance: Manufactured from alloy steel with a robust heat treatment process, it can withstand operating temperatures up to 200 °C without warping or losing integrity.
• Pressure Integrity: Rated for coolant system pressures of up to 3.5 bar, the flange maintains a tight seal even during engine start‑up and rapid temperature changes.
• Corrosion Protection: The surface is coated with a high‑quality anti‑corrosion layer that resists rust and chemical attack from coolant additives over extended service life.
• Exact Fitment: Designed to match the OEM specifications for models such as the VW Golf Mk II, Audi 100/80, Seat Toledo I, Skoda Octavia, and many others. The flange’s dimensions are identical to the original part number 037121132B or 037121133A.

Material Composition & Manufacturing Process

The V10-0276 is forged from high‑strength alloy steel (ASTM A516 Grade 70), which provides excellent toughness and resistance to thermal fatigue. The forging process eliminates internal voids, ensuring uniform material density. After forging, the flange undergoes a precision machining stage where all mating surfaces are ground to tolerances of ±0.02 mm. Finally, it receives a phosphating treatment followed by a chromate conversion coating, delivering long‑lasting protection against corrosion.

Installation & Compatibility

Installing the V10-0276 is straightforward for technicians familiar with engine coolant systems. The flange replaces the OEM part in the same location, requiring no modifications to the cylinder head or surrounding components. It is compatible with:

• Front Cylinder Head Coolant Lines – both inlet and outlet connections.
• Engine Models: 1.8 L, 2.0 L, 2.5 L petrol engines; 1.9 L, 2.0 L diesel engines.
• Vehicle Series: VW Golf Mk II (19E), Audi 100/80 (C4/B3), Seat Toledo I, Skoda Octavia, and many others listed under the VAG group.

When fitting, ensure that the coolant hose clamps are tightened to the manufacturer’s torque specification of 12 Nm. This guarantees a secure seal without over‑tightening, which could damage the flange threads.

Maintenance & Longevity

The V10-0276 is designed for long service life. However, regular inspection during routine maintenance is recommended:

• Visual Check: Look for cracks, warping or corrosion on the flange surface.
• Leak Test: After installation, run the engine to operating temperature and inspect for coolant leaks at the flange connection.
• Thread Condition: Verify that the threads remain free of burrs or damage; replace if necessary.

When these checks are performed, the flange can reliably serve engines for many thousands of kilometers without failure.

Why Choose VAICO V10-0276?

• OEM Quality Assurance: The part is manufactured to exact OEM specifications, ensuring seamless integration with existing engine designs.
• Durability: Its alloy steel construction and protective coatings provide superior resistance to thermal cycling and corrosion compared to many aftermarket alternatives.
• Wide Compatibility: A single part number covers a broad range of models across the VAG group, simplifying inventory and repair processes.
• Trusted Brand: VAICO has a long history of producing high‑quality cooling system components for European vehicles.

Applications Across Vehicle Models

The V10-0276 is specifically engineered to fit the following vehicle families, illustrating its versatility:

These examples demonstrate that the V10-0276 is a universal solution for many classic and modern engines within the VAG ecosystem.

Conclusion

The VAICO V10-0276 Coolant Flange represents an essential component for maintaining the integrity of a vehicle’s cooling system. Its robust construction, precise fitment, and proven durability make it the preferred choice for technicians and owners seeking reliable performance in Volkswagen, Audi, Seat, Skoda, and related models.

By selecting this OEM‑grade part, you ensure that your engine receives the same level of protection and reliability as when it was first built—providing peace of mind and extended service life for your vehicle’s cooling system.