{"product_id":"kolbenschmidt-kolbenringe-84-00mm-std-4-zyl-bmw-150011329-m40-m42-m43-nos-ovp-2x","title":"Kolbenschmidt Piston Rings 84.00mm STD 4 Cyl BMW 150011329 M40 M42 M43 NOS OVP 2x","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;\"\u003eKolbenschmidt piston rings in standard size 84.00 mm for BMW four-cylinder engines with 84.00 mm bore (including M40, M42, M43), Kolbenschmidt number 150 011 329.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0;color:#cfd3dc;\"\u003eNOS – uninstalled  ·  Original Kolbenschmidt packaging  ·  \u003cstrong style=\"color:#c69a3a;\"\u003eTwo complete ring sets in the box\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) part, unused in the original Kolbenschmidt packaging. The box shows storage marks; the rings themselves are uninstalled.\u003c\/p\u003e\n\u003c\/div\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eFunction and location\u003c\/h3\u003e\n\u003cp\u003ePiston rings seal the combustion chamber against the crankcase, conduct piston heat into the cylinder wall, and regulate the oil film on the bore. Per cylinder, the set consists of a compression ring, a second compression ring, and an oil control ring with expander spring. This box contains rings for four cylinders in the standard size 84.00 mm.\u003c\/p\u003e\n\u003cp\u003eThe rings are fitted in the ring grooves of the pistons in the cylinder block. Installation takes place with the engine disassembled, as part of an engine overhaul or a piston replacement.\u003c\/p\u003e\n\u003ch3 style=\"margin:22px 0 8px;\"\u003eCompatible vehicles\u003c\/h3\u003e\n\u003cp\u003eApplication per label: BMW four-cylinder engines with 84.00 mm bore. These include the M40 B16 and M40 B18, M42 B18, M43 B16 and M43 B18 series, as well as the classic M10 with 1573 and 1773cc.\u003c\/p\u003e\n\u003cp\u003eKolbenschmidt part number of this set: 150 011 329, per label Ø 84.00 mm in standard size, designed for four cylinders. The box contains two complete ring sets, i.e. rings for a total of two times four cylinders; the box is sold with both sets together.\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;\"\u003eBore and ring thicknesses are decisive. Several ring packages exist for 84.00 mm BMW engines – including 1.5 + 1.75 + 3.0 mm, 1.5 + 1.5 + 2.0 mm and 1.75 + 2.0 + 4.0 mm. Please measure the rings of your engine and compare them with the product photos before buying.\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\u003eM10 B18 (1766cc) and M10 B20 (1990cc) – these engines have an 89.00 mm bore\u003c\/li\u003e\n\u003cli\u003eM43 B19 and M44 B19 in the 318is, 318ti and Z3 1.9 – 85.00 mm bore\u003c\/li\u003e\n\u003cli\u003eSix-cylinder M20 B25, M50 B25 and M52 B25 – also 84,00 mm bore, but six cylinders instead of four\u003c\/li\u003e\n\u003cli\u003eBlocks bored to oversize – this set is in standard size\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\u003eHow many engines does the scope of delivery cover?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eOne ring set is enough for a complete four-cylinder engine. The box contains two complete sets, so it covers two engines or provides a spare set. For further scope of delivery, see the product photos.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eAre the rings already used?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eNo. These are new old stock (NOS) parts; the rings themselves have never been fitted. Only the box shows age-related storage marks.\u003c\/p\u003e\n\u003cp style=\"margin:0 0 4px;\"\u003e\u003cstrong\u003eDoes this set also fit the BMW M10?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp style=\"margin:0 0 12px;\"\u003eOnly for the versions with 1573 cm³ or 1773 cm³ and 84,00 mm bore. For the M10 B18 (1766 cm³) and M10 B20 (1990 cm³) the bore is 89,00 mm – this set does not fit those.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eRelated categories:\u003c\/strong\u003e \u003ca href=\"\/en\/collections\/weitere-marken\"\u003eOther makes\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":"Kolbenschmidt","offers":[{"title":"Default Title","offer_id":54960889561417,"sku":"90045","price":89.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0913\/5344\/8777\/files\/57_095aa793-e891-4691-b8f3-29720af33c30.jpg?v=1787304217","url":"https:\/\/kfzteile-thot.de\/en\/products\/kolbenschmidt-kolbenringe-84-00mm-std-4-zyl-bmw-150011329-m40-m42-m43-nos-ovp-2x","provider":"KFZTeile-Thot","version":"1.0","type":"link"}