OE 21437-274 — Upper Water Hose for Hyundai / Kia

Build-year coverage is listed row by row in the Applications table above. Where several generations share one number, the newer rows usually carry a revised suffix — compare the last four characters before buying, since a suffix change often means a different connector or bracket.

Aftermarket upper water hose comes from tooling houses that hold the original drawings or licensed equivalents. KingMay sources from vetted factories and inspects each batch; the manufacturer name is available on request where your market requires origin documentation.

A supersession happens when the maker revises a upper water hose and issues a new tail number. The revision normally changes a small physical detail rather than the fit. Where we know a supersession chain for 21437-274 we list the current reference; ask our desk for written confirmation before a large order.

KingMay supplies OEM-grade aftermarket parts built to the 21437-274 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.

Noise normally traces to worn internal surfaces, a loose mount, a dry bearing or contact with a neighbouring part. Isolate it by reproducing the sound at a fixed speed, then compare against the reference photo for 21437-274 to confirm the right replacement.

Wholesale pricing for 21437-274 depends on order quantity, surface treatment and packing. Standard references are quoted ex-Guangzhou with tiered pricing from 10 pieces upward — send quantity and destination port and a quotation usually returns within one business day.