{"product_id":"mercedes-olpumpenkette-a0009978194-om617-turbodiesel-w123-w126-300-d-td-w116-nos","title":"Mercedes oil pump chain A0009978194 OM617 turbodiesel W123 W126 300 D TD W116 NOS","description":"\u003cdiv style=\"background:#242833;border-radius:8px;padding:18px 20px;margin:0 0 14px;color:#ffffff;\"\u003e\n\u003cp style=\"margin:0 0 8px;\"\u003e\u003cstrong style=\"color:#c69a3a;\"\u003eOil pump chain (part number A0009978194) for the OM 617 turbodiesel of the Mercedes model series W123 and W126 – new old stock (NOS), never fitted.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eNOS – unused, in original packaging  ·  Genuine Mercedes-Benz part 000 997 81 94  ·  \u003cstrong style=\"color:#c69a3a;\"\u003eFits OM 617 turbodiesel W123 \u0026amp; W126\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/div\u003e\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003eCondition of this part\u003c\/p\u003e\n\u003cp style=\"margin:0;\"\u003eNew old stock (NOS), unused in the original Mercedes-Benz packaging. The chain is factory-preserved; the box shows storage marks.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFunction and location\u003c\/h3\u003e\n\u003cp\u003eThe double-row roller chain transfers drive force from the crankshaft to the oil pump sprocket, maintaining the engine's lubricating oil pressure. It runs permanently in the oil bath and is a wear part that is renewed during an engine overhaul or timing chain change. A stretched or broken oil pump chain leads to loss of oil pressure.\u003c\/p\u003e\n\u003cp\u003eThe installation location is in the front crankcase below the timing chain drive, between the crankshaft sprocket and the oil pump sprocket. Access is gained with the oil pan removed and the vibration damper dismounted.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eHow can you tell an oil pump chain is defective?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOil pressure warning light comes on or flashes\u003c\/li\u003e\n\u003cli\u003eNoticeable drop in oil pressure, especially at idle\u003c\/li\u003e\n\u003cli\u003eIn extreme cases, engine damage due to insufficient lubrication\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCompatible vehicles\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eMid-size W123 \/ S123 \/ C123 (OM 617 turbodiesel, 1977 to 1985):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300 C Turbo D (123.150)\u003c\/li\u003e\n\u003cli\u003e300 T Turbo D (123.190)\u003c\/li\u003e\n\u003cli\u003e300 Turbo D (123.130)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e\u003cstrong\u003eS-Class W126 (OM 617.951, 1981 to 1985):\u003c\/strong\u003e\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e300 SD (126.120)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThe oil pump chain carries the Mercedes-Benz part number A0009978194, also written as 000 997 81 94. Not to be confused with the camshaft timing chain (among others 000 997 31 94 with 186 links), the single-row oil pump chain 000 997 83 94 (48 links, for M116, M117 and M119), or the single-row oil pump chain 003 997 74 94 (46 links, for M102, M104, M111 and the OM 601 family).\u003c\/p\u003e\n\u003cdiv style=\"background:#f5f6f8;border-left:4px solid #c69a3a;border-radius:8px;padding:14px 18px;margin:0 0 16px;\"\u003e\n\u003cp style=\"margin:0 0 6px;font-weight:700;\"\u003e⚠ Important: compare the part number before buying\u003c\/p\u003e\n\u003cp style=\"margin:0 0 6px;\"\u003eThis is the chain for the oil pump drive, not a timing chain for the camshaft. Please compare the number of your old chain 1:1 and count the chain links.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;font-weight:700;\"\u003eDoes not fit:\u003c\/p\u003e\n\u003cul style=\"margin:0;padding-left:20px;\"\u003e\n\u003cli\u003eCamshaft timing chains, including with the number 000 997 31 94 (186 links)\u003c\/li\u003e\n\u003cli\u003eOil pump chain 000 997 83 94 – single-row, 48 links, for M116, M117 and M119\u003c\/li\u003e\n\u003cli\u003eOil pump chain 003 997 74 94 – single-row, 46 links, for M102, M104, M111 and the OM 601 family\u003c\/li\u003e\n\u003cli\u003eNaturally aspirated diesel 240 D (OM 616), as well as the 300 D naturally aspirated diesel with OM 617.912 – this part number is not approved for these\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/div\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this part fit your car?\u003c\/strong\u003e Send us the VIN (chassis number) and model year – we'll check it for free: \u003ca href=\"tel:+491798991069\"\u003e0179 8991069\u003c\/a\u003e (Mon–Fri 8 am–6 pm) or via our \u003ca href=\"\/en\/pages\/contact?thema=Ersatzteil\"\u003econtact form\u003c\/a\u003e.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFAQ\u003c\/h3\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eIs this the timing chain for the camshaft?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eNo. This is exclusively the double-row chain for the oil pump drive (000 997 81 94). The camshaft timing chain has a different, significantly longer number (among others 000 997 31 94 with 186 links) and is not part of this listing.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eDoes the chain also fit the naturally aspirated diesel 240 D or 300 D?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eNo. This part number is not approved for the 240 D with OM 616 or the 300 D naturally aspirated diesel with OM 617.912.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eWhat's included in the scope of delivery?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eThe exact scope of delivery is shown in the product photos of this listing.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelated categories:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/w116\"\u003eW116\u003c\/a\u003e, \u003ca href=\"\/en\/collections\/w126\"\u003eW126\u003c\/a\u003e, \u003ca href=\"\/en\/collections\/w123\"\u003eW123\u003c\/a\u003e\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eKFZTeile-Thot\u003c\/strong\u003e specialises in spare parts for Mercedes classic cars. Free shipping within Germany, 60-day return policy.\u003c\/p\u003e","brand":"Mercedes-Benz","offers":[{"title":"Default Title","offer_id":54960892346697,"sku":"90047","price":39.9,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_f5b22de1-0f9e-4167-b342-e2090ccdd52c.jpg?v=1787304221","url":"https:\/\/kfzteile-thot.de\/en\/products\/mercedes-olpumpenkette-a0009978194-om617-turbodiesel-w123-w126-300-d-td-w116-nos","provider":"KFZTeile-Thot","version":"1.0","type":"link"}