{"product_id":"dorman-594-478-engine-harmonic-balancer-pulley","title":"Dorman 594-478 Engine Harmonic Balancer Pulley","description":"\u003ch2\u003eOverview of Dorman Engine Harmonic Balancer Pulley 594-478\u003c\/h2\u003e\u003cp\u003eThe Dorman 594-478 engine harmonic balancer pulley is designed for reliable performance in Chevrolet, GMC, and Isuzu vehicles, specifically the Hombre, S10, and Sonoma models. This pulley is engineered to maintain engine balance and reduce vibration, contributing to smoother engine operation.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eInside diameter: 1.06 inches\u003c\/li\u003e\n\u003cli\u003eOutside diameter: 6.358 inches\u003c\/li\u003e\n\u003cli\u003eSix pulley grooves compatible with serpentine belts\u003c\/li\u003e\n\u003cli\u003eThree mounting holes with 0.43-inch diameter each\u003c\/li\u003e\n\u003cli\u003eDepth of 1.23 inches for proper fitment\u003c\/li\u003e\n\u003cli\u003eRegular grade type for standard engine applications\u003c\/li\u003e\n\u003cli\u003eDoes not include mounting hardware or center bolt\u003c\/li\u003e\n\u003cli\u003eNo keyway notch present\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Description\u003c\/h2\u003e\u003cp\u003eThe Dorman 594-478 harmonic balancer pulley is a critical component in the engine assembly of Chevrolet S10, GMC Sonoma, and Isuzu Hombre trucks. Its 1.06-inch inside diameter and 6.358-inch outside diameter ensure precise fitment on the crankshaft. The six-groove design accommodates serpentine belts, which are common in these vehicle models for driving multiple engine accessories. With three mounting holes sized at 0.43 inches in diameter, this pulley secures firmly to the engine block, maintaining proper alignment and balance. The 1.23-inch depth supports the pulley’s structural integrity during operation. This regular grade pulley is engineered to meet OEM specifications for vibration dampening and engine longevity.\u003c\/p\u003e\u003ch2\u003eCommon Applications and Problem Resolution\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReduces engine vibration and noise caused by crankshaft imbalance\u003c\/li\u003e\n\u003cli\u003ePrevents premature wear of serpentine belts and accessory components\u003c\/li\u003e\n\u003cli\u003eAddresses pulley misalignment issues in Chevrolet S10, GMC Sonoma, and Isuzu Hombre\u003c\/li\u003e\n\u003cli\u003eReplaces worn or damaged harmonic balancer pulleys to restore engine smoothness\u003c\/li\u003e\n\u003cli\u003eHelps maintain proper accessory drive system function\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eWhen installing the Dorman 594-478 harmonic balancer pulley, ensure the crankshaft surface is clean and free of debris. Verify the pulley’s inside diameter matches the crankshaft for a secure fit. Use appropriate torque specifications for the three mounting bolts, which are not included with this part. Since the pulley does not have a keyway notch, alignment should be carefully checked during installation. It is recommended to inspect the serpentine belt and related components for wear and replace them if necessary to ensure optimal performance.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman manufactures the 594-478 harmonic balancer pulley to meet industry standards for durability and fitment. While mounting hardware and center bolt are not included, the pulley itself is built to provide consistent performance in Chevrolet, GMC, and Isuzu vehicles. Please consult Dorman’s warranty policy for specific coverage details related to this part.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":51931964407989,"sku":"BKKY-594-478","price":42.66,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_594478_Fro.jpg?v=1775008581","url":"https:\/\/www.partcatalog.com\/products\/dorman-594-478-engine-harmonic-balancer-pulley","provider":"PartCatalog","version":"1.0","type":"link"}