HomeBelts and Cooling > Accessory Drive Belt System ComponentsSKP SK89631 Accessory Drive Belt Tensioner Assembly - Alternator and Water Pump
Part #: SK89631

SKP SK89631 Accessory Drive Belt Tensioner Assembly - Alternator and Water Pump

Alternator and Water Pump
29 vehicles fit this part
Select your vehicle to confirm fitment
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OE Direct Replacement — Bolt-on fit, no modifications needed
Fitment: Ford and Lincoln, F-150, Mark LT, and Mustang
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Accessory Drive Belt Tensioner for Ford and Lincoln

SKP SK89631 is an accessory drive belt tensioner assembly for select Ford and Lincoln applications. It maintains proper belt tension to support steady operation of the alternator and water pump, while helping reduce belt noise and uneven wear.

  • Direct-fit accessory drive belt tensioner assembly
  • Helps maintain consistent belt tension for engine accessory operation
  • Built with high-quality materials for dependable service
  • Rigorously tested for fit and function
  • Supports quieter engine operation

Fitment Details

  • Fits 2011-2020 Ford F-150, Alternator and Water Pump
  • Fits 2011-2012 Ford Mustang, N/A
  • Fits 2015-2017 Ford Mustang, N/A
  • Fits 2011-2014 Lincoln Mark LT, Alternator and Water Pump

This part cross-references Dayco 89631 and Four Seasons 39298 for the same application. Search terms such as 2011-2020 Ford F-150 accessory drive belt tensioner assembly and 2015-2017 Ford Mustang belt tensioner assembly match this application, along with 2011-2014 Lincoln Mark LT tensioner replacement needs.

What It Helps Address

  • Belt squeal from incorrect tension
  • Premature accessory belt wear
  • Inconsistent alternator drive performance
  • Water pump drive issues related to belt slack
  • Noise from a worn or weak tensioner assembly

Installation Notes and Tips

Verify the vehicle year, engine configuration, and accessory drive layout before ordering. Compare the original tensioner shape, mounting points, and belt routing to SK89631 to confirm the correct replacement for your Ford F-150, Mustang, or Lincoln Mark LT application.

Quality Assurance

SKP tensioner assemblies are built from quality materials and tested for fit and function to support reliable belt control and quieter operation.

This part fits 29 vehicles. Search below:

YearMakeModelLitersCylindersFuel TypePositionNotes
2020FordF-1505.0LV8GASAlternator and Water Pump
2020FordF-1505.0LV8FLEXAlternator and Water Pump
2019FordF-1505.0LV8GASAlternator and Water Pump
2019FordF-1505.0LV8FLEXAlternator and Water Pump
2018FordF-1505.0LV8GASAlternator and Water Pump
2018FordF-1505.0LV8FLEXAlternator and Water Pump
2017FordF-1505.0LV8GASAlternator and Water Pump
2017FordF-1505.0LV8FLEXAlternator and Water Pump
2017FordMustang5.0LV8GASN/A
2016FordF-1505.0LV8GASAlternator and Water Pump
2016FordF-1505.0LV8FLEXAlternator and Water Pump
2016FordMustang5.0LV8GASN/A
2015FordF-1505.0LV8GASAlternator and Water Pump
2015FordF-1505.0LV8FLEXAlternator and Water Pump
2015FordMustang5.0LV8GASN/A
2014FordF-1505.0LV8GASAlternator and Water Pump
2014FordF-1505.0LV8FLEXAlternator and Water Pump
2014LincolnMark LT5.0LV8GASAlternator and Water Pump
2013FordF-1505.0LV8GASAlternator and Water Pump
2013FordF-1505.0LV8FLEXAlternator and Water Pump
2013LincolnMark LT5.0LV8GASAlternator and Water Pump
2012FordF-1505.0LV8GASAlternator and Water Pump
2012FordF-1505.0LV8FLEXAlternator and Water Pump
2012FordMustang5.0LV8GASN/A
2012LincolnMark LT5.0LV8GASAlternator and Water Pump
2011FordF-1505.0LV8GASAlternator and Water Pump
2011FordF-1505.0LV8FLEXAlternator and Water Pump
2011FordMustang5.0LV8GASN/A
2011LincolnMark LT5.0LV8GASAlternator and Water Pump

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

3929889631BR3E6B209HABR3E6B209HCBR3Z6B209BBR3Z6B209H

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.