Fitment 1: For:-Chevy 1999-2010 Silverado 1500 / 2007 Silverado 1500 Classic / 1996-2000 Tahoe / 1996-2005 Blazer / 1996-2005 Astro / 1996-1999 C1500 / 1996-1999 C1500 Suburban / 1996-2000 C2500 / 1996-1999 C2500 Suburban / 1996-2000 C3500 / 1996-2014 Express 1500 / 1996-2006 Express 2500 / 1996-2002 Express 3500 / 1996 G30 / 1996-1999 K1500 / 1996-1999 K1500 Suburban / 1996-2000 K2500 / 1996-1999 K2500 Suburban / 1996-2000 K3500 / 1996-1999 P30 / 1996-2004 S10 Fitment 2: For:-GMC 1999-2013 Sierra 1500 / 2007 Sierra 1500 Classic / 1996-2000 Yukon 1996-2001 Jimmy / 1996-2004 Sonoma / 1996-1999 C1500 / 1996-1999 C1500 Suburban / 1996-2000 C2500 / 1996-1999 C2500 Suburban / 1996-2000 C3500 / 1996 G3500 / 1996-1999 K1500 / 1996-1999 K1500 Suburban / 1996-2000 K2500 / 1996-1999 K2500 Suburban / 1996-2000 K3500 / 1996-1999 P3500 / 1996-2005 Safari / 1996-2014 Savana 1500 / 1996-2006 Savana 2500 / 1996-2002 Savana 3500 Fitment 3: For:-Cadillac 1999-2000 Escalade; For:-Isuzu 1997-2000 Hombre; For:-Oldsmobile 1996-2001 Bravada Replacement OEM: 38103, 88909593, 12456152, 12561094, 12580296, 305231, 31025168, 8102396700, 8890173090, 780340, 8124561520, 89017309, 10239670, 89231FN, GT38103, 88909593, SK38103, ‎38103, 419-100 89231 49203 Specifications: Pulley Quantity: 1; Belt Type: V-Ribbed; Outside Diameter: 70(mm); Bearing Bore Inside Diameter: 17(mm); Width: 25(mm) Durability and Reliability: This Belt Tensioner exhibits outstanding durability and reliability, capable of withstanding prolonged operation and various harsh environmental conditions. It is constructed with high-quality materials and a robust design to resist damage from vibrations, high temperatures, and moisture. This ensures consistent performance and reliability throughout its lifespan Customer Service: In the unlikely event that you are not satisfied with this product, our professional customer service team is always available to assist you. We offer a hassle-free return and exchange policy, ensuring that you are completely satisfied with your purchase. With our team of experts, you can trust that any issues or concerns will be handled promptly and efficiently 100% Strict Quality Control: SZKAIDAG Belt Tensioner undergo strict quality control not just before shipping but throughout the production process. during each step of production multiple quality control checks are performed to meet or exceed oe (original equipment) fit, form, and function and insure each and every part lasts for years to come. Alternator is manufactured by SZKAIDAG industrial with 30 years automotive experience in more than 10 countries Specific Purpose: Drive Belt Tensioner & Pulley Assembly - Transports power to the alternator, power steering pump, air conditioning and keeps it running smoothly and effectively. It is designed for vehicles that needs an automatic belt tensioner. The torsional round spring design provides consistent tension for maximum durability When to Replace: If your vehicle encounters engine shaking, ignition difficulties, the engine noise increases when the vehicle accelerates sharply, the water pump does not circulate water temperature rises, you need to pay attention to whether there has a problem with your vehicle's Belt Tensioner OE: 38103, 88909593, 12456152 12561094 12580296 305231, 31025168 8102396700 8890173090, 780340 8124561520 89017309 10239670, 89231FN GT38103 88909593 SK38103, ‎38103 419-100 89231 49203  Fitments: For:-Chevy 1996-2005 Astro 1996-2005 Blazer 1996-1999 C1500 1996-1999 C1500 Suburban 1996-2000 C2500 1996-1999 C2500 Suburban 1996-2000 C3500 1996-2014 Express 1500 1996-2006 Express 2500 1996-2002 Express 3500 1996 G30 1996-1999 K1500 1996-1999 K1500 Suburban 1996-2000 K2500 1996-1999 K2500 Suburban 1996-2000 K3500 1996-1999 P30 1996-2004 S10 1999-2013 Silverado 1500 2007 Silverado 1500 Classic 1996-2000 Tahoe For:-GMC 1996-1999 C1500 1996-1999 C1500 Suburban 1996-2000 C2500 1996-1999 C2500 Suburban 1996-2000 C3500 1996 G3500 1996-2001 Jimmy 1996-1999 K1500 1996-1999 K1500 Suburban 1996-2000 K2500 1996-1999 K2500 Suburban 1996-2000 K3500 1996-1999 P3500 1996-2005 Safari 1996-2014 Savana 1500 1996-2006 Savana 2500 1996-2002 Savana 3500 1999-2013 Sierra 1500 2007 Sierra 1500 Classic 1996-2004 Sonoma 1996-2000 Yukon  For:-Cadillac 1999-2000 Escalade For:-Isuzu 1997-2000 Hombre For:-Oldsmobile 1996-2001 Bravada