My Garage
Cart

Genuine BMW i3s Radiator Cap

Cooling Radiator Cap
  • Select Vehicle by Model
  • Select Vehicle by VIN
Select Vehicle by Model
Series
Model
Year
or
Select Vehicle by VIN
For the most accurate results, select vehicle by your VIN (Vehicle Identification Number).

1 Radiator Cap found

  • BMW i3s Radiator Cap - 17135A1BD89
    Diagram for BMW i3s Radiator Cap - 17135A1BD89
    View related parts

    BMW i3s SCREW PLUG, EXPANSION TANK

    Part Number: 17135A1BD89
    $23.00 MSRP: $34.96
    You Save: $11.96 (35%)
    Ships in 1-3 Business Days
    ADD TO CART
    Product Specifications
    • Other Name: Cap, Cover Cap, Radiator Cap, Reservoir Cap
    • Position: Passenger Side
    • Replaces: 17-13-2-754-264, 17-11-7-639-024
    • Warranty: This genuine part is guaranteed by BMW's factory warranty.
    Fits the following Vehicles:
    • 2018-2021 BMW i3s | 2 Cyl 0.6 L BATTERY W/RANGE EXT (BEV REX), Base(I01), BATTERY EV (EV/BEV), Range Extender(I01)

BMW i3s Radiator Cap

The BMW i3s Radiator Cap exerts well-regulated pressure, assuring the compact electric hatchback of dependable cooling and exuberant performance. The Radiator Cap is meant to lock the circuit at about 16 PSI, which raises the boiling point of the coolant to prevent motors from getting damaged during rapid launches or long climbs. The two-way valve allows the expansion fluid to enter the overflow tank and then pull it back when the temperature drops, keeping the system full and air-free. The owners appreciate how it fits every i3s edition from the first release to the recent facelift, so you know it always has the same factory pressure. The Radiator Cap's strong construction and spring-loaded metal body fight corrosion and vibration, making it reliable over the long term. The part maintains a stable temperature to protect hoses, pumps, and sensors while reducing the risk of any leaks that could leave a BMW stranded. In winter, drivers enjoy faster cabin warmth and steadier acceleration in sport mode because the Radiator Cap effectively prevents boil off and maintains smooth flow. The inclusion of the knurled edges simplifies the removal of the lid, and the bright safety ring indicates this, warning the user to wait until cool. This is a sign of BMW focus and a feature of the i3s range. Also, the Radiator Cap easily stands out in the oversaturated market of car parts. Each cooling blueprint of the BMW assigns one Radiator Cap pressure value; that's why fitting the authentic piece keeps an i3s within engineered thermal margins. The Radiator Cap regulates pressure efficiently, regardless of whether your i3s runs errands during the week or goes canyon running on weekends while supporting BMW's reputation for efficiency and performance. The Radiator Cap is a small yet important part with good durability. It is trusted by every BMW i3s owner seeking seamless travel.

If you are looking for OEM BMW i3s Radiator Cap, we highly recommend to shop with us. Not only do we offer budget friendly prices, but we also provide fast delivery. In addition, we have a hassle-free return policy on all genuine BMW i3s Radiator Cap that come backed by the manufacturer's warranty.

Related BMW i3s Parts