1. About this item
- Coolant reservoir cap designed for cooling system expansion tanks with 200bar pressure specification.
- Reference part number supplied: 17117639021 for replacement comparison.
- Helps maintain coolant system sealing and reduce coolant leakage from the reservoir.
- Package includes one black plastic coolant reservoir cap.
- Confirm original cap size and pressure rating before purchase to avoid mismatch.
2. Vehicle Fitment
- For BMW X5 E70 3.5d
- For BMW X6 E71
- For BMW 128i
- For BMW 135i
- For BMW 323i
- For BMW 325i
- For BMW 325xi
- For BMW 328i
- For BMW 328xi
- For BMW 330i
- For BMW 330xi
- For BMW 335i
- For BMW 335xi
- For BMW 335d
- For BMW Z4 28i
- For BMW Z4 30i
- For BMW Z4 35i
- For BMW Z4 35is
- For BMW X1 28i
- For BMW X1 35iX
3. Reference Part NumbersReference part number supplied: 17117639021. No additional OE reference numbers were provided in the source information. Please compare with your original cap before ordering.4. Product DescriptionThis coolant reservoir cap is a direct replacement style component for replacing a cracked, damaged, or missing expansion tank cap. The 200bar pressure specification is provided from the source information and should be matched with the original vehicle cap. A properly sealing coolant cap helps maintain the cooling system pressure and prevents coolant from escaping during operation. Please verify the cap pressure, size, thread style, and original part number before installation.5. Package Includes
- 1 x Coolant Reservoir Cap
6. Important Fitment NoteCooling system caps can vary by engine configuration and production details. Using a cap with an incorrect pressure rating may affect cooling system operation. Please confirm your original cap specifications and reference number before purchase.
