Genuine original Mercedes-Benz intake valve guides, part number 636 053 03 30, set of 4, new old stock in the original Daimler-Benz bag with its factory tag (tag reads "Ventilführung Einlaß normal — Guide, valve intake", standard size). For the Mercedes-Benz OM 636 diesel engine, fitted to the Mercedes-Benz 170 D (W136), Mercedes-Benz 170 S-D (W136), Mercedes-Benz 170 DS (W191) and Mercedes-Benz 180 D (W120 Ponton), and to the Mercedes-Benz Unimog 401, Unimog 402 and Unimog 411. Intake side only — the exhaust guide is a different part number. Stored in bin 7VA.