Keep every belt-driven accessory spinning with the Dayco drive belt tensioner, part number 89202. This automatic serpentine belt tensioner assembly drops in as a direct-fit replacement for the 7.4L V8 (V8-7.4L) in a wide range of 1987-1993 Chevrolet and GMC trucks and vans — including the Chevrolet C1500 (1990-1993), C3500 (1988-1993), K3500 (1988-1993) and GMC C3500 (1988-1993), plus many more listed applications. See the Buyer's Guide tab for the full list.
A worn tensioner can lose its ability to hold proper belt tension, which may show up as belt squeal, chirping, or a fluttering belt. If a failed tensioner is the cause, replacing it with the Dayco accessory drive belt tensioner assembly restores correct tension to keep the accessories turning.
Interchange: 38143 · 49001 · 49261 · 45857 · 5857 · 180202 · 900052A · 999025A · VKM999025
This part cross-references / interchanges with the following part numbers:
What is a serpentine belt tensioner and what does it do?
It is a spring-loaded assembly that applies and maintains proper tension on the serpentine belt, keeping the belt firmly against the accessory pulleys as the engine runs.
Does the Dayco 89202 fit my vehicle?
It is a direct-fit replacement for the 7.4L V8 (V8-7.4L) in a range of 1987-1993 Chevrolet and GMC trucks and vans. Check the Buyer's Guide tab to confirm your exact year and model.
What are the signs my belt tensioner may need replacing?
Common signs include belt squeal or chirping, a visibly fluttering or loose belt, and a worn or seized pulley. Diagnose the cause before replacing, as other components can produce similar symptoms.
What size is the pulley on this tensioner?
It uses a single flat pulley measuring 90 mm in diameter and 27 mm in width.
Which direction does this tensioner operate?
This automatic tensioner is specified with a counter-clockwise rotation direction for use with a serpentine belt.
WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
