Genuine Mazda 3, Mazda 6 & CX-5 2.0 Main Bearing Set - PEY111SG0

Genuine Mazda 3, Mazda 6 & CX-5 2.0 Main Bearing Set – PEY111SG0 (crankshaft bearing) is an important component in the engine system, responsible for supporting and positioning the crankshaft in the engine block while creating a smooth contact surface that helps the crankshaft rotate stably.

Main bearings help maintain standard clearance, support lubrication, and reduce friction between the crankshaft and engine block, thereby limiting wear and extending engine life. As a result, the engine runs smoothly, reduces vibration, and achieves optimal performance.

This product is a genuine Mazda part, manufactured from high-quality materials with the ability to withstand heavy loads, heat, and continuous friction in harsh operating conditions.

The PEY111SG0 bearing is precisely designed for models using the SkyActiv 2.0 engine, ensuring accurate fitment with no modification required.

Product information
• Product name: Main bearing set (crankshaft bearing)
• Part number: PEY111SG0
• Standard: Genuine Mazda
• Applicable models: Mazda 3, Mazda 6, Mazda CX-5 (SkyActiv 2.0 engine)
• System: Engine
• Installation position: Engine block (crankshaft support)
• Condition: New

Function and role
• Supports and positions the crankshaft
• Reduces friction between the crankshaft and engine block
• Supports lubrication and heat dissipation
• Helps the engine run smoothly and stably

Key advantages
• Genuine Mazda part with high precision
• Strong resistance to load, heat, and friction
• High durability, low wear
• Correct vehicle fitment, no custom modification needed

Signs it needs replacing
• Loud knocking noise from the engine (crankshaft knock)
• Abnormally low oil pressure
• Strong engine vibration, unstable operation
• Metal particles in the oil

Replacement recommendations
• Recommended to replace during engine overhaul
• Check the crankshaft and connecting rod bearings as well
• Use engine oil that meets the correct specification
• Install correctly and tighten to the manufacturer’s torque specifications