{"product_id":"dayco-pb1649n-engine-harmonic-balancer","title":"Dayco PB1649N Engine Harmonic Balancer","description":"\u003ch2\u003eOverview of Dayco Premium OEM Replacement Balancer PB1649N\u003c\/h2\u003e\u003cp\u003eThe Dayco Premium OEM Replacement Balancer PB1649N is engineered for reliable performance in heavy-duty Chevrolet and GMC vehicles. Designed to meet OEM specifications, this engine harmonic balancer ensures smooth engine operation and durability for models like the Silverado 2500 HD and Express 3500.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eHub weighted counterweight balance for precise vibration control\u003c\/li\u003e\n\u003cli\u003eCast iron outer ring for enhanced strength and wear resistance\u003c\/li\u003e\n\u003cli\u003eOverall outside diameter of 198 mm (7.796 inches) and width of 62.35 mm (2.455 inches)\u003c\/li\u003e\n\u003cli\u003eIncludes one integrated serpentine pulley with 6 grooves and 192 mm (7.560 inches) outside diameter\u003c\/li\u003e\n\u003cli\u003eCompatible with Chevrolet and GMC heavy-duty trucks and vans\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetailed Product Features and Specifications\u003c\/h2\u003e\u003cp\u003eThis Dayco engine harmonic balancer features a hub weighted counterweight balance, which helps reduce crankshaft vibrations and extends engine life. The cast iron outer ring provides durability under demanding operating conditions. The balancer has a crank bore size of 1.930 inches (49.01 mm) and includes a single serpentine pulley with six grooves, designed to accommodate accessory belts efficiently. The overall dimensions—198 mm in diameter and 62.35 mm in width—ensure proper fitment and function within the engine assembly.\u003c\/p\u003e\u003cp\u003eNotably, this balancer does not include a crank trigger or exciter plate, hardware, installation instructions, timing marks, or a Woodruff key. It is intended as a direct replacement part for specific Chevrolet and GMC models, ensuring compatibility and performance consistency.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThe Dayco PB1649N balancer is compatible with a range of Chevrolet and GMC heavy-duty trucks and vans, including:\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eChevrolet Express 2500 and 3500\u003c\/li\u003e\n\u003cli\u003eGMC Savana 2500 and 3500\u003c\/li\u003e\n\u003cli\u003eChevrolet Silverado 2500 HD, 3500, and their Classic variants\u003c\/li\u003e\n\u003cli\u003eGMC Sierra 2500 HD, 3500, and their Classic variants\u003c\/li\u003e\n\u003c\/ul\u003e\u003cp\u003eThis part is designed to address common engine harmonic balancing needs in these models, helping to maintain engine smoothness and reduce wear.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by This Harmonic Balancer\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eExcessive crankshaft vibration causing premature engine wear\u003c\/li\u003e\n\u003cli\u003eNoise and rough idling related to balancer failure\u003c\/li\u003e\n\u003cli\u003eAccessory belt misalignment due to worn pulley surfaces\u003c\/li\u003e\n\u003cli\u003eEngine performance issues linked to harmonic imbalance\u003c\/li\u003e\n\u003cli\u003ePotential damage to crankshaft seals and bearings\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dayco PB1649N requires proper alignment of the crank bore and pulley grooves. Since hardware and installation instructions are not included, it is recommended to use OEM tools and follow vehicle-specific service manuals. Ensure the serpentine belt is correctly routed over the six-groove pulley to maintain accessory drive function. Professional installation is advised to avoid damage to the balancer or engine components.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Product Line Information\u003c\/h2\u003e\u003cp\u003eThe Dayco Premium OEM Replacement Balancer line is designed to meet or exceed original equipment manufacturer standards, providing reliable replacement parts for engine harmonic balancing. The PB1649N is manufactured with quality materials such as cast iron for the outer ring and engineered for precise balance with a hub weighted counterweight. While no warranty information is provided here, Dayco products typically undergo rigorous quality control to ensure durability and fitment accuracy for Chevrolet and GMC heavy-duty vehicles.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":43391726747829,"sku":"BJTQ-PB1649N","price":265.67,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_PB1649N_Ang.jpg?v=1774729409","url":"https:\/\/www.partcatalog.com\/products\/dayco-pb1649n-engine-harmonic-balancer","provider":"PartCatalog","version":"1.0","type":"link"}