REIN Tanks & Caps
Rein Automotive tanks and caps deliver OE-quality coolant expansion tanks, fuel caps, oil caps, and more designed for European vehicles. These components play a critical role in maintaining system pressure, preventing leaks, and supporting proper cooling and fueling performance. All Rein tanks and caps are engineered to match OE specifications for fit, sealing, and durability.
OE-Quality for Reliable Performance
Rein’s coolant expansion tanks and caps are built to last, preventing overheating and costly engine damage. Our fuel, oil, and reservoir caps provide proper closure and sealing for safe operation. Every part is tested to meet OE standards, ensuring reliable repairs. Rein Expansion tanks are made from 100% virgin plastic to withstand continuous heat cycles, preventing premature cracking and coolant loss. Rein caps regulate system pressure, ensuring correct operation of cooling, oil, and fuel systems while preventing leaks and damage to critical components.
Rein Tanks and Caps
- Coolant Expansion Tanks / Expansion Tank Kits
- Expansion Tank Caps
- Fuel Caps
- Oil Caps
- Power Steering Reservoirs
Find the Right Tanks and Caps
Search by application, VIN, or part number in our online catalog, or locate Rein products on leading eCatalog platforms including Activant/Epicor and WHI.
What's Hot, Campaigns & Promotions
-
New Parts Highlights – August 2025
...View Now -
New Parts Highlights – July 2025
...View Now -
New Parts Highlights – June 2025
...View Now -
New Parts Highlights – May 2025
...View Now -
New Parts Highlights – April 2025
...View Now -
April 2025 – This Just In – Rein Timing Chain Solutions for MINI N-Series Engines
...View Now -
New Parts Highlights – March 2025
...View Now -
April 2025 – This Just In – Rein Coolant Hose Metal Connectors for BMW & Audi
...View Now -
April 2025 – This Just In – Rein Coolant Metal Pipe for MINI
...View Now -
March 2025 – This Just In – Rein Water Pump Service Kits for MINI
...View Now