URO 11281735358 Engine Crankshaft Pulley

Overview of URO Engine Crankshaft Pulley for BMW Models

The URO Engine Crankshaft Pulley, part number 11281735358, is designed specifically for select BMW vehicles including the 323i, 323is, 328i, 328is, 525i, 528i, M3, and Z3 models. Constructed from durable aluminum with a black finish, this new crankshaft pulley supports serpentine belt systems and ensures reliable engine performance.

• Material: High-quality aluminum for strength and lightweight performance
• Color: Black finish for corrosion resistance and durability
• Inside Diameter: 45.08 mm for precise fitment
• Outside Diameter: 128.86 mm with a 124.23 mm diameter measurement
• Width: 52.4 mm to accommodate belt alignment
• Groove Quantity: 5 grooves compatible with serpentine belts
• New, not remanufactured, ensuring original specifications
• Compatible with BMW 323i, 323is, 328i, 328is, 525i, 528i, M3, and Z3 models

Detailed Product Description

This URO crankshaft pulley (part number 11281735358) is engineered to meet the exact specifications required by BMW engines. The aluminum construction offers a balance of durability and reduced weight, which helps maintain engine efficiency. The black coating provides additional protection against wear and environmental factors. With five grooves designed for serpentine belts, this pulley ensures proper belt tension and alignment, critical for the operation of engine accessories such as the alternator, power steering pump, and air conditioning compressor.

Applications and Common Issues Addressed

• Replacement for worn or damaged crankshaft pulleys causing belt slippage
• Resolves engine accessory noise related to pulley misalignment
• Addresses vibration issues stemming from pulley imbalance
• Restores proper serpentine belt routing and tension
• Prevents premature belt wear due to pulley surface degradation

Installation Notes and Tips

Ensure the engine is cool before beginning installation. Verify the pulley’s inside diameter and groove count match the vehicle’s specifications. Use appropriate tools to remove the old pulley without damaging the crankshaft. Align the new pulley carefully to maintain belt tension and prevent misalignment. Torque the pulley bolt to manufacturer specifications to secure proper fitment.

Quality Assurance and Warranty

The URO crankshaft pulley is a new, OEM-quality replacement part designed to meet or exceed original equipment standards. Manufactured with precision aluminum and finished for corrosion resistance, it supports long-term engine reliability. While specific warranty details are not provided, URO parts typically come with a limited warranty against defects in material and workmanship.