Four Seasons Accessory Drive Belt Tensioner Pulley P/N:45982

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$37.99
MPN: 45982
Item Package Quantity: 1
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Four Seasons Accessory Drive Belt Tensioner Pulley P/N:45982
Four Seasons Accessory Drive Belt Tensioner Pulley P/N:45982
$37.99

Keep your serpentine accessory belt tracking true and quiet with the Four Seasons Accessory Drive Belt Tensioner Pulley (MPN 45982). This idler / tensioner pulley drops in as a direct-fit replacement for many 1987-1991 Chevrolet and GMC full-size vans and trucks — including the 1987-1991 Chevrolet G10/G20/G30 and GMC G1500/G2500/G3500 vans, the 1988-1989 Chevrolet and GMC C1500/C2500/C3500 and K1500/K2500/K3500 trucks, and the 1987-1989 Chevrolet Astro and GMC Safari — running the V6-4.3L, V8-5.0L, and V8-5.7L engines. See the Buyer's Guide tab for the full application list.

  • Construction: Made of steel and thermoplastic, which Four Seasons designs for longer life and improved dampening.
  • Belt tension: Helps maintain proper serpentine belt tension to reduce belt slip and the noise it causes.
  • Dimensions: 3.75 in (95.25 mm) outside diameter with a single mounting hole.
  • Hardware: Mounting hardware is not included — consult the vehicle service information for the correct fasteners and whether they may be reused.

As an idler / tensioner pulley, it gives the serpentine accessory drive belt a smooth surface to ride on while helping keep proper tension across the belt path, and it's constructed to OE quality and reliability. Signs the original pulley may need replacing include belt squeal or chirp, a rough or noisy bearing, and visible wobble. If a worn pulley is the source of your belt noise, this replaces it.

Interchange: Manufacturer part number 45982.

Frequently Asked Questions

What does this pulley do?

It's an idler / tensioner pulley that gives the serpentine accessory drive belt a smooth surface to ride on and helps maintain proper belt tension across the accessory drive.

Which vehicles does it fit?

It's a direct-fit replacement for many 1987-1991 Chevrolet and GMC vans and trucks with V6-4.3L, V8-5.0L, or V8-5.7L engines — see the Buyer's Guide tab for the full list.

What is it made of?

It's made of steel and thermoplastic, which Four Seasons designs for longer life and improved dampening.

Is mounting hardware included?

No. Mounting hardware is not included; consult the vehicle service information for the correct fasteners and whether they may be reused.

How do I know if my pulley is failing?

Signs the pulley may need replacing include belt squeal or chirp, a rough or noisy bearing, and visible wobble. Diagnose the cause before replacing.