{"product_id":"dorman-419-101-accessory-drive-belt-tensioner-assembly","title":"Dorman 419-101 Accessory Drive Belt Tensioner Assembly","description":"\u003ch2\u003eReliable Accessory Drive Belt Tensioner for GM Vehicles\u003c\/h2\u003e\u003cp\u003eThe Dorman 419-101 accessory drive belt tensioner assembly is designed to maintain proper tension on serpentine belts in select Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models. Engineered for durability and precise fitment, this tensioner helps ensure consistent belt performance and reduces the risk of belt slippage or failure.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with multiple GM models including Buick Century, Chevrolet Impala, Pontiac Grand Prix, and more\u003c\/li\u003e\n\u003cli\u003eFeatures a 90.3 mm outside diameter pulley with a 40 mm bearing diameter\u003c\/li\u003e\n\u003cli\u003eConstructed with a polyamide 6.6 pulley reinforced with 30% glass fiber for strength\u003c\/li\u003e\n\u003cli\u003eIncludes belt tensioner assembly, one bolt, and one washer for installation\u003c\/li\u003e\n\u003cli\u003eDesigned for serpentine belt systems with counterclockwise tensioner rotation\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eTechnical Specifications and Design Details\u003c\/h2\u003e\u003cp\u003eThe Dorman 419-101 tensioner assembly incorporates a single pulley with no grooves, optimized for serpentine belt applications. The pulley’s inside diameter measures 17 mm, with widths of 20 mm and 27 mm at different sections, ensuring compatibility with the belt profile. The pulley bearing is a single bearing type with a 40 mm diameter, providing smooth rotation and reducing wear. The pulley material is a durable polyamide 6.6 composite filled with 30% glass fiber, offering resistance to heat and mechanical stress. The tensioner rotates counterclockwise, matching the belt routing on compatible GM vehicles.\u003c\/p\u003e\u003ch2\u003eCompatible Vehicles and Applications\u003c\/h2\u003e\u003cp\u003eThis accessory drive belt tensioner assembly is compatible with a range of GM vehicles, including Buick Achieva, Century, Regal, and Skylark; Cadillac Cimarron; Chevrolet Cavalier, Lumina, Monte Carlo, and Impala; Oldsmobile Cutlass Ciera, Cutlass Supreme, Firenza, and Silhouette; Pontiac Grand Am, Grand Prix, Sunbird, and Trans Sport. The part number 419-101 ensures precise fitment for these models, supporting proper belt tension and engine accessory operation.\u003c\/p\u003e\u003ch2\u003eCommon Issues Addressed by the Tensioner Assembly\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eEliminates belt slippage caused by worn or weak tensioners\u003c\/li\u003e\n\u003cli\u003ePrevents premature serpentine belt wear and cracking\u003c\/li\u003e\n\u003cli\u003eReduces noise from loose or misaligned belts\u003c\/li\u003e\n\u003cli\u003eMaintains consistent tension for alternator, power steering, and AC compressor operation\u003c\/li\u003e\n\u003cli\u003eHelps avoid engine accessory failure due to belt malfunction\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eInstallation of the Dorman 419-101 tensioner assembly requires removal of the old tensioner and proper alignment of the serpentine belt. The package includes one bolt and one washer to secure the tensioner in place. It is important to verify the counterclockwise rotation direction during installation to match the vehicle’s belt routing. Use appropriate tools to apply correct torque to the mounting bolt and inspect the belt for wear before reassembly.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDorman parts are manufactured to meet or exceed OEM specifications, ensuring reliable performance and durability. The 419-101 tensioner assembly undergoes rigorous quality control testing to verify fit, function, and material integrity. While specific warranty details may vary, Dorman typically offers a limited warranty covering defects in material and workmanship for a defined period after purchase.\u003c\/p\u003e","brand":"Dorman","offers":[{"title":"Default Title","offer_id":43610953056437,"sku":"BKLB-419-101","price":73.59,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/RB_419101_Fro.jpg?v=1774983436","url":"https:\/\/www.partcatalog.com\/products\/dorman-419-101-accessory-drive-belt-tensioner-assembly","provider":"PartCatalog","version":"1.0","type":"link"}