Dorman 594-338 Engine Harmonic Balancer

BMW Harmonic Balancer Replacement

This Dorman harmonic balancer is a direct replacement for select BMW applications, including BMW X3, Z4, 525i, 325i, 325Ci, 330Ci, X5, 320i, 325xi, 330i, 330xi, and 530i models. Part number 594-338 is built to restore proper crankshaft vibration control with OE-style fitment for the listed vehicles.

Key Features

• Direct replacement harmonic balancer for select BMW engines
• Stress-resistant rubber bond helps absorb engine vibration
• Ductile steel construction for tensile and impact strength
• Serpentine drive belt type application
• Black finish with bolt and washer included
• Package contents: balancer, Woodruff key, and instruction sheet
• Part number 594-338 for easy identification

Detailed Product Overview

Dorman 594-338 is engineered as a replacement engine harmonic balancer for BMW models across the 2003-2011 range. It uses a rubber isolator bond to reduce crankshaft vibration, while the ductile steel body adds durability for demanding engine operation. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Compatible With BMW X3, BMW Z4, BMW 525i, BMW 325i, BMW 325Ci, BMW 330Ci, BMW X5, BMW 320i, BMW 325xi, BMW 330i, BMW 330xi, and BMW 530i applications where the original harmonic balancer matches this configuration. If you are replacing a worn BMW harmonic balancer, 594-338 provides a direct-fit service part for the listed vehicles.

Common Problems This Part Addresses

• Crankshaft vibration from a deteriorated balancer
• Rubber bond separation in the original harmonic balancer
• Noise or imbalance related to a worn pulley assembly
• Drive belt tracking issues caused by balancer wear
• Service replacement needs on select BMW engine applications

Installation Notes and Tips

Verify engine code, belt layout, and balancer style before installation. Confirm the serpentine belt configuration, mounting hole count, and Woodruff key fitment against the original part. Use the included instruction sheet during installation and inspect the crankshaft snout, keyway, and surrounding components for wear before fitting the new balancer.

Quality Assurance

Dorman manufactures this harmonic balancer with ductile steel construction and a stress-resistant rubber bond to support long-term service in the listed BMW applications. Part number 594-338 is built as a direct replacement for the specified fitment range.