Whether you’re under the hood for a weekend project or keeping a high-performance engine in peak shape, the last thing you want to worry about is a brittle cooling system. That’s where the Rein Automotive Expansion Tank
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Think of these hoses as the heavy-duty upgrade your engine deserves. They aren't just "replacements"—they are built to survive the brutal environment under your hood.
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Connects the heat management module to the expansion tank's lower port
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Brand:
ES#:
5341131
Mfg#:
17127535536
Back Ordered
$76.00
This product was last offered at the strikethrough price on 05-13-2026
OE-quality coolant expansion tank engineered to withstand the intense heat cycles of BMW's 4.4L Twin-Turbocharged V8 engines.
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This hose attaches from the engine block to the water pump
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Upgrade your BMW’s cooling system with the Radiator Expansion Tank Vent Line Hose by Rein, ensuring optimal engine performance and protection against overheating.
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Precision-molded to OE dimensions and shape for easy installation
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Goes from the top right of radiator to the water pump.
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Optimize your engine cooling system performance and heater output with quality drive belts, coolant hoses, cooling system parts, and approved coolant fluids from ECS Tuning. Head off expensive repairs and untimely breakdowns with regularly scheduled cooling system inspection and maintenance.
Lifetime Replacement
