{"product_id":"dayco-pbo81461sc5-engine-harmonic-balancer","title":"Dayco PBO81461SC5 Engine Harmonic Balancer","description":"\u003ch2\u003eOverview of Dayco SC Performance 8 Rib 5% Overdrive Harmonic Balancer\u003c\/h2\u003e\u003cp\u003eThe Dayco SC Performance 8 Rib 5% Overdrive Engine Harmonic Balancer (Part Number PBO81461SC5) is engineered for select Buick, Chevrolet, Oldsmobile, and Pontiac models. Designed to provide precise crankshaft vibration dampening, this harmonic balancer supports engine longevity and smooth operation in vehicles such as the Impala, Grand Prix, and Riviera.\u003c\/p\u003e\u003cul\u003e\n\u003cli\u003eCompatible with Buick, Chevrolet, Oldsmobile, and Pontiac models including Bonneville, Grand Prix, Impala, LeSabre, LSS, Monte Carlo, Park Avenue, Regal, and Riviera\u003c\/li\u003e\n\u003cli\u003eHub weighted counterweight balance for improved crankshaft stability\u003c\/li\u003e\n\u003cli\u003eIncludes crank trigger\/exciter plate for ignition timing\u003c\/li\u003e\n\u003cli\u003eTwo integrated serpentine pulleys with 6 and 8 grooves respectively\u003c\/li\u003e\n\u003cli\u003eSteel outer ring construction for durability\u003c\/li\u003e\n\u003cli\u003eOverall outside diameter of 7.284 inches (185.00 mm) and overall width of 3.445 inches (87.50 mm)\u003c\/li\u003e\n\u003cli\u003eCrank bore diameter of 1.373 inches (34.87 mm)\u003c\/li\u003e\n\u003cli\u003e9 bolt holes for secure mounting\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eDetails on the SC Performance 8 Rib 5% Overdrive Product Line\u003c\/h2\u003e\u003cp\u003eThe SC Performance 8 Rib 5% Overdrive line from Dayco is designed to enhance engine accessory drive efficiency by providing a 5% overdrive ratio. This helps optimize belt speed and accessory performance in high-demand applications. The 8 rib design supports serpentine belt configurations common in many GM vehicles, ensuring compatibility and reliable power transmission. This product line focuses on durability and precision fitment for performance-oriented engine setups.\u003c\/p\u003e\u003ch2\u003eTechnical Description and Features\u003c\/h2\u003e\u003cp\u003eThe Dayco PBO81461SC5 harmonic balancer features a hub weighted counterweight balance that reduces crankshaft vibrations, contributing to smoother engine operation and reduced wear. It includes a crank trigger\/exciter plate, which is essential for ignition timing in compatible engines. The balancer integrates two serpentine pulleys—one with 6 grooves and the other with 8 grooves—allowing it to drive multiple accessories efficiently. Constructed with a steel outer ring, it offers durability under demanding engine conditions. The 9 bolt hole configuration ensures a secure fit on the crankshaft, with a crank bore diameter precisely sized at 1.373 inches (34.87 mm).\u003c\/p\u003e\u003ch2\u003eApplications and Problem Solving\u003c\/h2\u003e\u003cul\u003e\n\u003cli\u003eReduces crankshaft vibration to prevent premature engine wear\u003c\/li\u003e\n\u003cli\u003eSupports proper ignition timing with integrated crank trigger plate\u003c\/li\u003e\n\u003cli\u003eMaintains serpentine belt alignment and tension for accessory drive\u003c\/li\u003e\n\u003cli\u003eAddresses pulley wear and belt slippage issues in GM V6 and V8 engines\u003c\/li\u003e\n\u003cli\u003eImproves accessory drive efficiency with 5% overdrive ratio\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch2\u003eInstallation Notes and Tips\u003c\/h2\u003e\u003cp\u003eThis harmonic balancer requires precise alignment with the crankshaft and proper torque on the 9 mounting bolts. It does not include installation hardware or instructions, so refer to the vehicle’s service manual for detailed procedures. Ensure the crank bore and bolt hole pattern match the engine specifications of your Buick, Chevrolet, Oldsmobile, or Pontiac model. Use appropriate tools to avoid damage to the steel outer ring and integrated pulleys during installation.\u003c\/p\u003e\u003ch2\u003eQuality Assurance and Warranty\u003c\/h2\u003e\u003cp\u003eDayco manufactures the SC Performance 8 Rib 5% Overdrive harmonic balancer to meet OEM standards for fit and function. The steel outer ring and hub weighted design contribute to long service life under normal operating conditions. Warranty details are provided by Dayco and should be confirmed at the time of purchase.\u003c\/p\u003e","brand":"Dayco","offers":[{"title":"Default Title","offer_id":51847705985205,"sku":"BJTQ-PBO81461SC5","price":281.93,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0628\/1442\/1173\/files\/DY_PBO81461SC5_Fro.jpg?v=1774729424","url":"https:\/\/www.partcatalog.com\/products\/dayco-pbo81461sc5-engine-harmonic-balancer","provider":"PartCatalog","version":"1.0","type":"link"}