


LT Truck 2019-Up Automatic Belt Tensioner Idler Kit 5.3L 6.2L Silverado L84 L87
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
LT Truck 2019-Up Automatic Belt Tensioner Idler Kit 5.3L 6.2L Silverado L84 L87Drive Belt Tensioner Idler Kit 2019+ LT Gen V Includes belt tensioner with pulley, Idler Pulley, and mounting hardware Converts factory stretch belt to an automatic tensioner for easy belt installation Uses 74" Belt (740K6) Must be used with GM Water Pump (ICT # WAT311)
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Reviewed in the United States on January 29, 2026
★★★★★ 5
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