Big End Connecting Rod Bearing Set - Standard Size (12 pcs Kit) for BMW 3.0L M54 Engine - Compatible with OEM 11241284850, Fits 330i 530i 730i E46 E60 E66

Product Overview This is a high-quality replacement connecting rod bearing set, engineered to match the OEM part number 11241284850. The kit includes a complete set of 12 Standard Size (STD) bearings, designed for the repair or overhaul of the BMW M54 series 3.0L inline 6-cylinder engine. Manufactured with premium alloy materials and precision engineering, it provides reliable friction protection to effectively resolve engine knocking noises and restore smooth operation, serving as a cost-effective alternative to the original part. Key Features & Benefits Precise Compatibility & Direct Fit: This product is manufactured specifically to replace OEM part number 11241284850, ensuring a perfect match for the crankshaft journals and connecting rods in the BMW M54B30 engine. Standard Size (STD) is intended for engines where the crankshaft connecting rod journals are in original, unworn condition and have not been reground. The complete 12-piece set fulfills the requirement for replacing all connecting rod bearings (big end bearings) in an inline 6-cylinder engine, ensuring balanced pressure across all cylinders. Premium Materials for Reliable Performance: Bearings feature a high-strength steel backing paired with a wear-resistant alloy layer, offering excellent anti-fatigue properties, load-bearing capacity, and a smooth surface finish to promote stable oil film formation under high engine loads. Strict tolerance control guarantees bearing consistency, which is fundamental to restoring engine quietness and reducing mechanical noise. Solves Critical Engine Problems: Directly addresses the classic symptom of worn bearings: a deep knocking or rattling sound under acceleration or load (connecting rod knock). Replacing worn bearings helps improve oil pressure by eliminating excessive clearance, a critical step in major engine repairs (e.g., addressing oil consumption issues, full rebuilds). Cost-Effective Repair Solution: Offers performance close to OEM specifications at a more competitive price point, making it a smart choice for professional-grade engine repairs on a budget. Detailed Compatibility Information Corresponds to OEM #: 11241284850 Kit Contents: Connecting Rod Bearings × 12 pieces (Standard Size) Target Engine: BMW M54B30 3.0L Inline 6-cylinder Petrol Engine. Primary Vehicle Applications (Verify specific year & configuration): BMW 3 Series (E46): 330i, 330Ci, 330xi BMW 5 Series (E39/E60/E61): 530i BMW 7 Series (E38/E65/E66): 730i, 730Li, 735i, 735Li BMW X5 (E53): X5 3.0i BMW Z4 (E85): Z4 3.0i ⚠️ Important Note: Always verify your engine's exact specifications and required bearing size (Standard or Undersize) using your Vehicle VIN or the part number from your old bearings. This product is Standard Size. Professional Installation Warning & Advice ⚠️ This is a high-precision internal engine component. Installation demands extreme care! Professional Installation Mandatory: This procedure MUST be performed by an experienced mechanic in an impeccably clean environment using professional tools. Improper installation will lead to immediate and severe engine failure. Absolute Cleanliness & Measurement: The engine interior, crankshaft journals, and oil passages must be thoroughly cleaned before installation. Each connecting rod journal must be measured with a micrometer to check diameter and roundness, confirming it is within wear limits and suitable for this "Standard Size" bearing. Critical Torque & NEW Bolts: Connecting rod caps must be tightened following the BMW service manual's exact sequence, torque values, and angle specifications. Connecting rod bolts are TTY (stretch) bolts and MUST NOT BE REUSED! New, high-quality connecting rod bolts must be installed concurrently. Recommended Concurrent Service: When performing this repair, it is highly recommended to also inspect or replace: main bearings, oil pump, engine oil, and oil filter to ensure the entire lubrication system is renewed. Package Contents High-Quality Connecting Rod Bearings (Standard Size) × 12 pieces. Our Commitment We are committed to supplying automotive repair parts that meet stringent specifications. Correct part selection and professional installation are fundamental to the performance and longevity of this product. Please proceed only if you possess the requisite technical skills and environment. Choose this kit to professionally repair the heart of your engine and restore its smooth, quiet power.

• ✅ Direct OEM Replacement: This is a high-quality connecting rod bearing set designed as a direct fit replacement for OEM part number #11241284850/#11241284849/#RB6609K- STD. Ensures perfect compatibility with the BMW M54B30 3.0L inline-6 engine.
• ⚙️ Solves Engine Knock & Noise: Effectively addresses and eliminates engine knocking or rod knocking sounds caused by worn bearings. Helps restore smooth engine operation, improve oil pressure, and prevent further internal damage. Backed by a 24-month warranty for peace of mind.
• 🔥 Premium Alloy Construction: Manufactured with a durable steel backing and a wear-resistant, high-load alloy layer. Provides excellent strength and promotes stable oil film formation for reliable performance under demanding conditions.
• 📦 Complete 12-Piece Kit (STD Size): Comes as a full set of 12 standard size (STD) bearings required for a complete 6-cylinder engine overhaul. Offers the best value and ensures balanced performance across all cylinders.
• ⚠️ Professional Installation Required: This is a critical internal engine component. Installation must be performed by a qualified mechanic with precise measurement, cleanliness, and the use of new torque-to-yield connecting rod bolts to ensure safety and longevity.