Engine Coolant Expansion Tank Cap for Ford Focus, Mondeo, Fiesta, Galaxy, Kuga

Maintain proper cooling system performance with this Engine Coolant Expansion Tank Cap, designed as an OEM-style replacement for selected Ford models. Engineered to provide a secure seal for the coolant reservoir, this replacement cap helps maintain the correct cooling system pressure while minimizing coolant loss and preventing contaminants from entering the expansion tank.

Key Features

• OEM-style coolant expansion tank cap.
• Direct replacement for worn, cracked, or leaking reservoir caps.
• Premium automotive-grade plastic construction.
• Heat-resistant and pressure-resistant design.
• Durable sealing gasket for reliable leak prevention.
• Helps maintain proper cooling system pressure.
• Reduces the risk of coolant evaporation and contamination.
• Precision-engineered for a secure factory-style fit.
• No modifications required.
• Built for long-lasting durability.

Why Choose Our Expansion Tank Cap

A damaged or worn coolant reservoir cap can cause pressure loss, coolant leakage, and reduced cooling system efficiency. This OEM-style replacement helps restore a proper seal, supporting reliable engine cooling and everyday driving performance.

Compatible Vehicles

Compatible with selected Ford models, including:

• Ford Focus
• Ford Mondeo
• Ford Fiesta
• Ford Galaxy
• Ford Kuga
• Ford C-Max

OE Part Number:

• 3M5H-8100-AD

Please verify your vehicle model, production year, coolant reservoir design, and OE part number (3M5H-8100-AD) before purchasing to ensure proper compatibility.

Perfect For

• Coolant reservoir cap replacement
• Cooling system maintenance
• Preventive vehicle servicing
• Replacing leaking expansion tank caps
• OEM-style repairs
• Routine engine maintenance

Installation Instructions

1. Ensure the engine has completely cooled.
2. Slowly remove the old expansion tank cap.
3. Inspect the reservoir neck for dirt or damage.
4. Install the new cap and tighten until fully secured.
5. Check for proper fit before operating the vehicle.

Never remove the coolant expansion tank cap while the engine is hot or under pressure, as hot coolant may cause serious burns.

Product Specifications

• Product Type: Engine Coolant Expansion Tank Cap
• OE Part Number: 3M5H-8100-AD
• Material: Automotive-Grade Plastic with Rubber Seal
• Function: Coolant Reservoir Sealing & Pressure Control
• Features: Heat-Resistant, Pressure-Resistant, Leak-Resistant
• Installation: Direct Replacement
• Condition: Brand New

Restore Reliable Cooling System Performance

Replace your worn or leaking coolant reservoir cap with this OEM-style Engine Coolant Expansion Tank Cap. Designed for durability, reliable sealing, and a precise factory fit, it helps maintain proper cooling system pressure while protecting the coolant reservoir from dirt and moisture.