Original quality Tensioner Pulley 1772003400 for Mercedes Benz GLC

Original quality tensioner pulley OE 1772003400 is manufactured to match Mercedes-Benz GLC vehicles equipped with M177 4.0T twin-turbo AMG engines, all mounting hole spacing, pulley outer radian and central bolt specifications strictly comply with OEM factory technical standards to realize direct plug-and-play replacement without adjusting peripheral accessory drive parts during maintenance. The pulley surface adopts wear-resistant reinforced rubber coating to eliminate abnormal friction squeaks, while built-in high-precision sealed bearing and high-toughness torsion spring maintain stable constant belt tension under long-time high-speed engine operation and drastic under-hood temperature fluctuations. The anti-corrosion cast metal tensioner arm effectively resists driving vibration and thermal deformation, preventing belt slipping, jumping and premature aging of alternator and water pump drive belts. Damaged original tensioner pulleys will trigger harsh squealing noises on startup and acceleration, power transmission attenuation and potential risk of belt detachment that paralyzes vehicle auxiliary systems. Every finished tensioner pulley undergoes rotational wear endurance testing, constant tension calibration and high-low temperature cyclic aging inspection based on OEM quality criteria to guarantee uniform reliable performance of all batches. We deliver one-stop bulk procurement services for global Mercedes-Benz professional repair garages and cross-border auto parts wholesalers, keeping abundant spot inventory all year round with flexible minimum order quantity and complete long-term after-sales warranty to satisfy continuous large-volume purchasing demands of overseas merchants.