Bilstein Expansion Tank Cap PCD000070

Description

The Bilstein Expansion Tank Cap PCD000070 is a precision-engineered aftermarket replacement cap designed for the coolant expansion tank in select Land Rover vehicles. Known globally for its high-performance suspension components, Bilstein also manufactures top-tier automotive parts built for reliability and durability. This cap serves as a direct-fit alternative to OEM part number PCD000070, providing excellent sealing and pressure control within the cooling system. Whether you’re replacing a failing cap or performing routine maintenance, Bilstein’s trusted engineering ensures consistent performance under demanding conditions.

Working

Installed on top of the coolant reservoir, the Bilstein Expansion Tank Cap PCD000070 plays a crucial role in regulating the internal pressure of the cooling system. It maintains a secure seal to prevent coolant evaporation and features a pressure-release valve that opens automatically when pressure exceeds the designated threshold. This protects the radiator, hoses, and expansion tank from damage caused by overheating or overpressure. The cap’s plug-and-play compatibility allows it to fit effortlessly onto the factory tank, restoring full cooling system functionality with no modifications required.

Quality and Capability

Constructed from high-quality, heat-resistant polymer and corrosion-resistant components, the Bilstein Expansion Tank Cap PCD000070 is designed to withstand intense engine bay temperatures and long-term use. It resists cracking, leaking, and warping, even under heavy daily driving or off-road conditions. As a part of Bilstein’s automotive product line, this cap upholds a reputation for German-engineered reliability. While it is a non-OEM component, it offers close-to-genuine performance and long service life—making it a preferred choice for enthusiasts and mechanics seeking a dependable and affordable cooling system upgrade.