Expansion Tank Cap - Coolant 8200048024 / 7700805131/ 4408066 / 91166192 For Renault Largus / Logan/ K7M/ K7J / K9K / K4M / D4F

Product Overview

The Coolant Expansion Tank Cap is an essential component of the vehicle’s cooling system, produced for Renault Largus, Renault Logan, and a wide range of engine models including K7M, K7J, K9K, K4M, and D4F. It comes with four OE-compliant part numbers: 8200048024, 7700805131, 4408066, and 91166192, ensuring precise fitment for various vehicle types. As a small but critical part, the expansion tank cap maintains the optimal pressure of the cooling system, preventing coolant leakage and overheating. It is a cost-effective replacement part that helps keep the engine running at a stable temperature.

Core Benefits

Precise Pressure Regulation

This Coolant Expansion Tank Cap is calibrated to maintain the ideal pressure level in the cooling system. It raises the boiling point of the coolant, preventing engine overheating even during high-load driving or hot weather.

Leak-Proof & Anti-Overflow Design

The cap’s high-sealing rubber gasket creates a tight seal between the cap and the expansion tank, effectively preventing coolant leakage and overflow. It avoids coolant loss and the risk of engine damage caused by insufficient cooling.

Corrosion Resistance & Longevity

Constructed with durable plastic and heat-resistant rubber, the cap resists corrosion from coolant chemicals and high temperatures. It maintains its sealing performance over time, reducing the need for frequent replacements.

Application & Compatibility

• The Coolant Expansion Tank Cap is widely compatible with the following vehicle models and engine types:

• Vehicle models: Renault Largus, Renault Logan, Lada Largus

• Engine types: K7M, K7J, K9K, K4M, D4F

• All part numbers are engineered to match OEM standards, enabling direct installation without additional modifications.

Technical Specifications

Quality & Craftsmanship

Accurate Pressure Calibration: Each Coolant Expansion Tank Cap is strictly calibrated in the factory to ensure it maintains the specified pressure range, avoiding system overpressure or underpressure issues.

High-Sealing Gasket Design: The rubber gasket is made of special heat-resistant material that maintains elasticity even at high temperatures, ensuring long-term sealing performance.

Rigorous Testing: All caps undergo leakage and pressure endurance tests to ensure they can withstand the harsh working environment of the cooling system.

Manufacturer Advantages & Services

Comprehensive Compatibility: Our Coolant Expansion Tank Cap covers multiple part numbers, catering to the needs of different vehicle models and reducing the hassle of searching for the right part.

Fast Delivery & Stock Availability: We keep sufficient inventory to ensure quick delivery for bulk or retail orders, meeting urgent replacement needs of customers.

Professional Technical Support: Our team provides detailed installation guidance and troubleshooting tips, helping customers complete replacements easily.

Competitive Pricing: We offer factory-direct prices, providing high-quality products at cost-effective rates for distributors and end-users.

FAQ

SincereFullWhat will happen if the expansion tank cap fails?

SincereFullA faulty cap will cause coolant leakage, reduced system pressure, and engine overheating. It may also lead to coolant boiling and overflow, damaging the engine in severe cases.

SincereFullHow often should I replace the coolant expansion tank cap?

SincereFullIt is recommended to replace the cap every 2–3 years or when you notice signs of leakage, deformation, or loose fit. You can also replace it together with the coolant for better maintenance.

SincereFullIs this cap compatible with the K9K diesel engine?

SincereFullYes, this Coolant Expansion Tank Cap is fully compatible with the K9K diesel engine model, as well as gasoline engines like K4M and D4F.

CTA

Protect your engine from overheating with our reliable Coolant Expansion Tank Cap! This small but vital part is a must-have for vehicle maintenance and repair. Whether you are a professional repair technician, auto parts dealer, or car owner, we provide high-quality products and considerate services. Click “Inquire” to get your exclusive quote now, or add the product to your basket for immediate purchase. Don’t wait until engine overheating occurs—secure your vehicle’s cooling system with our premium expansion tank cap today!