Dayco 89364 Accessory Drive Belt Tensioner Assembly
OE Quality 60-Day Returns
Dayco

Dayco 89364 Accessory Drive Belt Tensioner Assembly

Brand Dayco 89364
Belt Type Serpentine
Direction Clock Wise
Number of Pulleys 1
Pulley 1 Diameter 76
Pulley 1 Flat Y
Pulley 1 Width 31
Type Automatic
Fits Ford · 19 vehicles

Automatic tensioner. Maintains proper belt tension for consistent accessory drive performance.

Serpentine belt compatible. Built for serpentine belt systems with a single pulley design.

Single-pulley design. Simplifies the accessory drive belt system with one pulley.

Cross-references ACDelco 38321, CARQUEST 38321 and Duralast 305364 for the same application. See all 8.

$105.93Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $105.93
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Accessory Drive Belt Tensioner Assembly options

Dayco 89364 Accessory Drive Belt Tensioner Assembly

The Dayco 89364 accessory drive belt tensioner assembly is an automatic serpentine belt tensioner built for consistent belt control in Ford Super Duty and E-Series secondary alternator applications. It is a direct-fit service part for vehicles that need stable belt tension and reliable pulley tracking.

  • Automatic accessory drive belt tensioner assembly
  • Serpentine belt type
  • Clockwise rotation
  • 1 pulley design
  • Pulley 1 diameter: 76 mm
  • Pulley 1 width: 31 mm
  • Pulley 1 flat: yes
  • Dayco part number 89364

Fitment and Application

Compatible with secondary alternator belt systems on select Ford trucks and vans. Fits 2004-2010 Ford E-350 Super Duty, N/A, Secondary Alt. Fits 2003-2007 Ford F-250 Super Duty, N/A, Secondary Alt. Fits 2003-2007 Ford F-350 Super Duty, N/A, Secondary Alt. Fits 2004-2005 Ford E-350 Club Wagon, N/A, Secondary Alt.

This part cross-references Ford OE numbers 3C2E-6B209-BA and 3C2Z-6B209-BA for the same application.

What It Helps Address

  • Belt squeal from weak or inconsistent tension
  • Serpentine belt flutter on accessory drive systems
  • Premature belt wear from poor pulley alignment or tension control
  • Accessory drive noise related to a worn tensioner assembly
  • Secondary alternator drive issues on Ford E-350 Super Duty and Ford F-250/F-350 Super Duty applications

Installation Notes

Verify clockwise rotation, pulley diameter, and pulley width before installation. Confirm the vehicle uses a serpentine belt system with a secondary alternator setup and match the OE-style mounting and routing requirements for the specific Ford E-350 Super Duty, Ford F-250 Super Duty, or Ford F-350 Super Duty application.

Quality Assurance

Dayco manufactures accessory drive components for service replacement use, and this tensioner assembly is built to match the listed application requirements for proper belt control and fitment.

Related reading

This part fits 19 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2010FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2009FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2008FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2007FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2007FordF-250 Super Duty6.0LV8N/ASecondary Alt.
2007FordF-350 Super Duty6.0LV8N/ASecondary Alt.
2006FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2006FordF-250 Super Duty6.0LV8N/ASecondary Alt.
2006FordF-350 Super Duty6.0LV8N/ASecondary Alt.
2005FordE-350 Club Wagon6.0LV8N/ASecondary Alt.
2005FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2005FordF-250 Super Duty6.0LV8N/ASecondary Alt.
2005FordF-350 Super Duty6.0LV8N/ASecondary Alt.
2004FordE-350 Club Wagon6.0LV8N/ASecondary Alt.
2004FordE-350 Super Duty6.0LV8N/ASecondary Alt.
2004FordF-250 Super Duty6.0LV8N/ASecondary Alt.
2004FordF-350 Super Duty6.0LV8N/ASecondary Alt.
2003FordF-250 Super Duty——N/ASecondary Alt.
2003FordF-350 Super Duty——N/ASecondary Alt.
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 38321CARQUEST — 38321Duralast — 305364Ford — 3C2E-6B209-BAFord — 3C2Z-6B209-BAGates — 38321Hayden — 5723NAPA — 38321