OE 17117521071 — Radiator Cap for Bmw

KingMay supplies OEM-grade aftermarket parts built to the 17117521071 factory specification: material grade, dimensional tolerance and surface finish follow the original tooling. They are not dealer-boxed genuine parts, and we quote them that way so there is no ambiguity at customs.

Standard minimum order is 10 pieces per part number. Mixed orders that combine 17117521071 with other cooling system references are welcome — that is how most clients fill an LCL or FCL container without over-stocking a single line.

Watch for noise on cold start, vibration under load, warning lights, fluid seepage or uneven operation. Once any of those appears the radiator cap should be inspected, and reference 17117521071 replaced if it measures outside specification.

The Related OE References table above lists the alternates we see most often in trade inquiries. Cross-references work because the engineering envelope is shared across the cooling system family — always confirm dimensions and connector layout before you swap.

Start from the code cast or printed on the part you are removing — that is the authoritative source. If it is illegible, use the Applications table on the closest cooling system reference and narrow by build year. Send photos and we will cross-check the number for you.

Four variables explain most of the spread: material grade, whether the goods are new production or clearance stock, packing format, and whether the quote is ex-works or landed. Ask for the material certificate alongside the price — that is what makes a comparison like-for-like.