Expansion Tank Cap - BMW 1/3/5 Series / X3 / X5 / Z4 (many models check fitment) : Engine > Covers > Caps /// Engine > Cooling > Ca URO Parts : Brakes > Sport Kits > Front|Brakes > Sport Kits > Rear|Wheels > Aftermarket Wheels > Cast|Engine > Intake > Air Intake|Brakes > Rotors

Expansion Tank Cap - BMW 1/3/5 Series / X3 / X5 / Z4 (many models check fitment)

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Description: Guaranteed fitment precision-molded to OE cap dimensions to ensure compatibility with original and aftermarket coolant recovery tanks. Quality cap and seal materials resist engine heat and harsh cooling system environment factory pressure-tested.

Part #'s

17-11-7-639-020 / 17 11 7 639 020 / 17117639020

17-11-7-521-071 / 17 11 7 521 071 / 17117521071
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