Genuine BMW Z4 Coolant Reservoir Cap

Coolant Overflow Reservoir Cap

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6 Coolant Reservoir Caps found

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BMW Z4 Radiator Cap
Part Number: 17117639020
$23.00 MSRP: $34.96
You Save: $11.96 (35%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Screw Cap For Expansion Tank; Cap, Reservoir Cap
- Replaces: 17-11-7-521-071
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2009-2016 BMW Z4 | sDrive28i(E89), sDrive30i(E89), sDrive35i(E89), sDrive35is(E89)
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BMW Z4 Radiator Cap
Part Number: 17117639022
$23.00 MSRP: $34.96
You Save: $11.96 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap, Filler Cap, Reservoir Cap
- Replaces: 17-11-1-742-231
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2003-2008 BMW Z4 | 2.5i(E85), 3.0i(E85), Coupe 3.0si(E86), Roadster 3.0i(E85), Roadster 3.0si(E85)
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BMW Z4 SCREW CAP FOR EXPANSION TANK
Part Number: 17138665638
$23.00 MSRP: $34.96
You Save: $11.96 (35%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Other Name: Cap, Expansion Tank Cap, Reservoir Cap
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, M40i(G29), sDrive30i(G29)
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BMW Z4 Cap
Part Number: 17128515062
$8.25 MSRP: $9.24
You Save: $0.99 (11%)
Ships in 1-3 Business Days
ADD TO CART
Product Specifications
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, M40i(G29), sDrive30i(G29)
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BMW Z4 Cover Lid
Part Number: 17117639024
$23.00 MSRP: $34.96
You Save: $11.96 (35%)
Ships in 1-3 Business Days
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Product Specifications
- Other Name: Cap, Cover Cap, Radiator Cap, Reservoir Cap
- Replaced by: 17135A1BD89
- Warranty: This genuine part is guaranteed by BMW's factory warranty.
Fits the following Vehicles:
- 2019-2020 BMW Z4 | M40i(G29), sDrive30i(G29)
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BMW Z4 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:
- 2019-2025 BMW Z4 | 4 Cyl 2.0 L GAS, 6 Cyl 3.0 L GAS, M40i(G29), sDrive30i(G29)

BMW Z4 Coolant Reservoir Cap

The BMW Z4 Coolant Reservoir Cap locks in system pressure to regulate temperature and protect critical engine components. This Coolant Reservoir Cap provides a seal for the expansion tank on your BMW Z4, preventing air and debris blockage and keeping your engine cool. When pressure builds up, instead of leaking onto the pavement and harming tires, wildlife, and paint, the Coolant Reservoir Cap redirects the fluid to the recovery chamber. The Coolant Reservoir Cap comes in two variants: a plastic cap that is light in weight and impervious to chemicals and a metal cap that withstands severe heat after repeated redline trips. Both twist on quickly without requiring any tools. Therefore, changing out a worn Coolant Reservoir Cap is a five-minute job that restores factory safety. The E85 Roadster, E86 Coupe, exhilarating Z4, and later sDrive30i and sDrive35i trims are all compatible with the component, demonstrating that the part is suitable for every generation of BMW's sports legend. In every instance, the cap maintains a stable pressure, ensuring there is a perfect 50-50 balance, aiding a Z4's cornering ability. The recent convertible features a touchscreen that is also from a BMW component that fights overheating. In addition, this protects sensitive electronics. The Coolant Reservoir Cap prevents rust and corrosion that can break down hoses, pumps, and gaskets, making the water pump's job easier and improving fuel economy. The dependable Coolant Reservoir Cap is economical, yet the protective role it plays for high-value aluminum blocks and turbochargers makes it a wise choice for any Z4 owner. Select a genuine BMW part that comes with renowned BMW pedigree and enjoy factory tested sealing strength that keeps your Z4 running cool mile after mile.

If you are looking for OEM BMW Z4 Coolant Reservoir 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 Z4 Coolant Reservoir Cap that come backed by the manufacturer's warranty.