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Dayco 15615 Accessory Drive BeltOE Quality 60-Day Returns
Part #: 15615

Dayco 15615 Accessory Drive Belt

Fan and Air Conditioning, Air Conditioning, and Fan, Air Conditioning and Air Pump
73 vehicles fit this part
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Fitment: Buick, Chevrolet, Oldsmobile, and Pontiac, 98, Bel Air, Bonneville, C10 Suburban, C20 Suburban, Camaro, Caprice, Catalina, Century, Custom Cruiser, Cutlass, Cutlass Calais, Cutlass Salon, Cutlass Supreme, Delta 88, El Camino, Impala, K10 Suburban, K20 Suburban, LeSabre, Malibu, Regal, Riviera, Skylark, and Toronado
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Dayco 15615 Accessory Drive Belt

The Dayco 15615 accessory drive belt is a top-cog, synthetic rubber compound belt built for accessory drive systems that run the fan and air conditioning compressor. With a 61.50-inch effective length, 62.07-inch outside circumference, and .44-inch top width, it is sized for specific classic GM and Buick applications that require accurate belt fitment.

  • Accessory drive belt for fan and air conditioning applications
  • Synthetic rubber compound construction for dependable belt performance
  • Top-cog design helps the belt flex around pulleys
  • Black finish with a .44-inch top width
  • 61.50-inch effective length and 62.07-inch outside circumference
  • Built to SAE J636 and SAE J637 standards
  • Operating temperature range: -35 to 175 degrees

Detailed Product Overview

Dayco 15615 is an accessory drive belt for vehicles that use a narrow, cogged belt profile in the accessory drive system. The 36-degree angle, synthetic rubber compound, and top-cog construction support consistent pulley engagement in applications such as 1967-1979 Buick LeSabre, 1968-1968 Chevrolet Impala, and 1977-1977 Oldsmobile Toronado. This Dayco 15615 belt is also listed for multiple Chevrolet C10, C20, K10, and K20 Suburban configurations with air conditioning.

This part cross-references Duralast 15615 and Motorcraft JB-622 for the same application.

What This Belt Helps Address

  • Squealing or slipping accessory drive belt noise
  • Loss of fan drive or air conditioning compressor drive
  • Cracked, glazed, or worn belt surfaces
  • Incorrect belt length on classic Buick, Chevrolet, and Oldsmobile applications
  • Reduced accessory performance caused by belt wear

Installation Notes and Tips

Verify pulley diameter, accessory layout, and engine configuration before installation. This belt is listed for fan and air conditioning positions, including fan, air conditioning, and air pump on the 1977 Oldsmobile Toronado. Confirm the vehicle’s original belt length and pulley setup against the fitment notes, especially on applications marked with specific pulley sizes such as 5 1/2-inch and 5 7/8-inch pulleys.

  • Fits 1978-1979 Buick LeSabre, Fan and Air Conditioning, w/o A.P., w/A.C., Axial Long Body Comp.
  • Fits 1978 Buick Riviera, Fan and Air Conditioning, w/o A.P., w/A.C., Axial Long Body Comp.
  • Fits 1974 Buick Century, Air Conditioning, 5 7/8 In. Pulley
  • Fits 1973 Buick LeSabre, Fan and Air Conditioning, 5 7/8 In. Pulley
  • Fits 1972 Buick Skylark, Air Conditioning, 5 1/2 In. Pulley
  • Fits 1969-1970 Buick LeSabre, Fan and Air Conditioning
  • Fits 1969 Chevrolet C10 Suburban, Air Conditioning
  • Fits 1968 Chevrolet Camaro, Fan and Air Conditioning
  • Fits 1968 Chevrolet Impala, Air Conditioning
  • Fits 1967 Chevrolet Bel Air, Fan and Air Conditioning
  • Fits 1977 Oldsmobile Toronado, Fan, Air Conditioning and Air Pump

Quality Assurance

Dayco manufactures this belt to SAE J636 and SAE J637 standards, supporting consistent dimensional and performance requirements for accessory drive service. The part number 15615 is also referenced across multiple OE and aftermarket listings for classic Buick, Chevrolet, Oldsmobile, Pontiac, and related applications.

BrandDayco
Part Number15615
MaterialSynthetic rubber compound
Top Width.44
ColorBlack
Effective Length1562.10
Effective Length61.50
Outside Circumference1576.58
Outside Circumference62.07
Angle36
Banded BeltN
Belt ConstructionTop cog
Maximum Operating Temperature175
Maximum Operating Temperature79.4
Minimum Operating Temperature-35
Minimum Operating Temperature-37.2
StandardsSae j636, sae j637

This part fits 73 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
1979BuickLeSabre5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1979Oldsmobile985.7LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979Oldsmobile986.6LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979OldsmobileCustom Cruiser5.7LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979OldsmobileCustom Cruiser6.6LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979OldsmobileDelta 884.3LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979OldsmobileDelta 885.7LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1979OldsmobileDelta 886.6LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978BuickLeSabre5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978BuickLeSabre6.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978BuickRiviera5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978BuickRiviera6.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978Oldsmobile985.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978Oldsmobile986.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978OldsmobileCustom Cruiser5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978OldsmobileCustom Cruiser6.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978OldsmobileCutlass4.3LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978OldsmobileCutlass5.7LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978OldsmobileCutlass Calais4.3LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978OldsmobileCutlass Salon4.3LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978OldsmobileCutlass Supreme4.3LV8Fan and Air Conditioningw/A.C., Axial Long Body Comp.
1978OldsmobileDelta 884.3LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978OldsmobileDelta 885.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978OldsmobileDelta 886.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978PontiacBonneville5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978PontiacBonneville6.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978PontiacCatalina5.7LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1978PontiacCatalina6.6LV8Fan and Air Conditioningw/o A.P., w/A.C., Axial Long Body Comp.
1977OldsmobileToronadoFan, Air Conditioning and Air Pump
1974BuickCentury5.7LV8Air Conditioning5 7/8 In. Pulley
1974BuickLeSabre5.7LV8Air Conditioning5 7/8 In. Pulley
1974BuickRegal5.7LV8Air Conditioning5 7/8 In. Pulley
1973BuickCentury5.7LV8Fan and Air Conditioning5 7/8 In. Pulley
1973BuickLeSabre5.7LV8Fan and Air Conditioning5 7/8 In. Pulley
1973BuickRegal5.7LV8Fan and Air Conditioning5 7/8 In. Pulley
1972BuickLeSabre5.7LV8Air Conditioning5 1/2 In. Pulley
1972BuickSkylark5.7LV8Air Conditioning5 1/2 In. Pulley
1970BuickLeSabre5.7LV8Fan and Air Conditioning
1970BuickSkylark5.7LV8Fan and Air Conditioning
1969BuickLeSabre5.7LV8Fan and Air Conditioning
1969BuickSkylark5.7LV8Fan and Air Conditioning
1969ChevroletC10 Suburban6.5LV8Air Conditioning
1969ChevroletC20 Suburban6.5LV8Air Conditioning
1969ChevroletK10 Suburban6.5LV8Air Conditioning
1969ChevroletK20 Suburban6.5LV8Air Conditioning
1968BuickLeSabre5.7LV8Fan and Air Conditioningw/A.C., 5 1/2 In. Pulley
1968BuickSkylark5.7LV8Fan and Air Conditioningw/A.C., 5 1/2 In. Pulley
1968ChevroletBel Air6.5LV8Air Conditioning
1968ChevroletBel Air7.0LV8Air Conditioning
1968ChevroletC10 Suburban6.5LV8Air Conditioning61 1/2 In. Belt
1968ChevroletC20 Suburban6.5LV8Air Conditioning61 1/2 In. Belt
1968ChevroletCamaro6.5LV8Fan and Air Conditioning
1968ChevroletCaprice6.5LV8Air Conditioning
1968ChevroletCaprice7.0LV8Air Conditioning
1968ChevroletEl Camino6.5LV8Fan and Air Conditioning
1968ChevroletImpala6.5LV8Air Conditioning
1968ChevroletImpala7.0LV8Air Conditioning
1968ChevroletK10 Suburban6.5LV8Air Conditioning61 1/2 In. Belt
1968ChevroletK20 Suburban6.5LV8Air Conditioning61 1/2 In. Belt
1967ChevroletBel Air6.5LV8Fan and Air Conditioning
1967ChevroletBel Air7.0LV8Fan and Air Conditioning
1967ChevroletCaprice6.5LV8Fan and Air Conditioning
1967ChevroletCaprice7.0LV8Fan and Air Conditioning
1967ChevroletEl Camino6.5LV8Air Conditioning
1967ChevroletImpala6.5LV8Fan and Air Conditioning
1967ChevroletImpala7.0LV8Fan and Air Conditioning
1967ChevroletMalibu6.5LV8Air Conditioning
1966ChevroletBel Air6.5LV8Air Conditioning
1966ChevroletBel Air7.0LV8Air Conditioning
1966ChevroletCaprice6.5LV8Air Conditioning
1966ChevroletCaprice7.0LV8Air Conditioning
1966ChevroletImpala6.5LV8Air Conditioning
1966ChevroletImpala7.0LV8Air Conditioning

* 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:

FB15615

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

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