Kolbenschmidt 77531600 Standard Size Connecting Rod Bearing Set STD

The Kolbenschmidt 77531600 is a standard-size (STD) connecting rod bearing set — also known as a conrod bearing set or big-end bearing set — engineered for use in Mercedes-Benz M103 and M104 inline-6 engines, as well as compatible Daewoo, Puch, and SsangYong applications. Manufactured by KS Kolbenschmidt in Germany, this set delivers OEM-level precision and durability for engine rebuilds and crankshaft reconditioning work.

Key Features:

• Standard size (STD) — 48.00mm journal diameter
• Complete set covering all rod journals (sold as a full engine set)
• Direct replacement for OE numbers: 1030300560 / A1030300560, 1110380910 / A1110380910, and 1110381510 / A1110381510
• Cross-references: GLYCO 71-3817/6 STD
• Compatible engine codes include M103.940, M103.941, M103.942, M103.943, M103.980, M103.981, M103.982, M103.983, M103.984, M103.985, M103.987, M104.941, M104.942, M104.943, M104.944, M104.945, M104.980, M104.981, M104.990, M104.991, M104.992, M104.994, M104.995, M104.996
• Manufactured by Kolbenschmidt (KS), a leading OEM supplier to Mercedes-Benz, BMW, Volkswagen, and Audi
• New condition — not remanufactured

Kolbenschmidt is one of Europe's most respected engine component manufacturers, supplying OEM-spec parts to major automakers. This connecting rod bearing set is the correct standard-size choice when crankshaft journals are within factory specification and do not require machining to an undersize. Always verify journal measurements and confirm the required bearing size (STD, -0.25, or -0.50) before installation.