Alperen Kumru

Articles by Alperen Kumru on the RSS Kumru Automotive blog.

Drawing: four parts one below the other on the left: a bent steel pipe with a nut at each end, a straight steel tube of the same diameter without fittings, a hose with a fitting at each end and a small hydraulic cylinder; an arrow runs from each to a separate folder on the right: the bent pipe to the engine part folder, the straight tube to the steel tube folder, the hose to the rubber or plastic hose folder, the cylinder to the hydraulic cylinder folder; the magnifier shows the tariff code field on the tab of one folder, drawn as short dashes, not digits

October 6, 2026OEM numbers and sourcing

HS codes for injector pipes, hydraulic hoses and cab tilt parts: how to find the right one

Which HS heading covers injector pipes, hydraulic hoses, cab tilt cylinders and pumps, shown with published EU, Turkish and US customs decisions.

Drawing: at the top an old steel line with a nut at each end and a stained surface, and below it a new line with the same bends and the same ends; dashed lines align the bends of the two lines one above the other; beside them a drawing sheet showing only the plain outline of the line; the magnifier shows the nutted ends of the two lines one above the other, with the same end form and the same nut

August 25, 2026OEM numbers and sourcing

Discontinued lines: having a pipe made from a sample or a part number

How to have a discontinued or classic-vehicle injector, fuel or steering pipe made from a sample, drawing or part number, and why a minimum quantity applies.

Drawing: a bent steel pipe and a short hose with a fitting at each end on a bench; beside them a checklist with all five boxes ticked: where each operation is done, quality certificate, sample approval, batch records, customs document; next to the list a sealed certificate and a closed shipping carton with a blank label; the magnifier shows the sealed certificate with its scope section marked in blue

March 31, 2026OEM numbers and sourcing

Sourcing pipes and hoses from Turkey: how to evaluate a manufacturer

How to evaluate a pipe or hose manufacturer in Turkey from a distance: in-house processes, certificate checks, sample approval, A.TR and origin documents.

Drawing: a plain truck on the left, labelled vehicle series; arrows fan out from it to the right, each to an injector pipe bent to a different shape; a small number tag is tied to every pipe, with the numbers drawn as short dashes, not digits; the magnifier enlarges one tag and shows the same number written two ways, one above the other: run together on top, split into groups with spaces below

January 27, 2026OEM numbers and sourcing

Mercedes injector pipe part numbers: which number fits which vehicle series?

How Mercedes-Benz injector pipe numbers are written, where to find them, and which number matches which truck, bus and van series.

Drawing: a line with no part number lying on a bench, with a nut at each end and three bends; a thread pitch gauge sits in the mouth of one nut, the jaws of a caliper grip a straight leg, a rule beside the line measures between the corners of two bends, and one of those bends carries an angle mark; the magnifier shows the cone end with its nut, the seat marked in blue

January 13, 2026OEM numbers and sourcing

How to identify a line with no part number: nut thread, seat, diameter, length, bends

How to describe an injector, fuel or oil line with no readable part number: tube diameter, nut thread, seat type, length, bends and what to send with them.