Tensioner – GM (12742383)

Factory part number 12742383: a tensioner supplied by GM. It is catalogued under Belts & Pulleys > Pulleys & Tensioners.

• 2.5l
• The number stamped on the old part is the only reliable identifier, since two parts can look identical and differ by a millimetre or by rotation direction.
• Fitment lists are a guide rather than a guarantee, because the same model year can carry different parts depending on the production break and the option code.

Belt fitment is decided by rib count, effective length and cross-section, and by whether the vehicle uses a stretch-fit belt with no tensioner at all.

Worth checking against the original before fitting. If you cannot read the number, we can match it from the VIN. Leaves our US warehouse in one to two business days, and shipping is free over $59.