Dayco 17660 Accessory Drive Belt
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Dayco

Dayco 17660 Accessory Drive Belt

Brand Dayco 17660
Position Air Conditioning and Power Steering
Angle 36
Belt Construction Top Cog
Color Black
Effective Length 66
Effective Length 1676.40
Material Synthetic Rubber Compound
Maximum Operating Temperature 79.4
Maximum Operating Temperature 175
Minimum Operating Temperature -37.2
Minimum Operating Temperature -35
Outside Circumference 66.27
Outside Circumference 1683.26
Standards SAE J636, SAE J637
Top Width .53
Fits American Motors, Jeep, and Ford · 7 vehicles

Top-cog construction. Helps the belt flex smoothly for reliable accessory drive performance.

Synthetic rubber compound. Built for durable, consistent operation across a wide temperature range.

SAE J636, J637. Meets recognized industry standards for accessory drive belts.

Cross-references ACDelco 2T17660, ACDelco 9660HD and ACDelco 17660 for the same application. See all 84.

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Accessory Drive Belt for OE-Style Fitment

The Dayco 17660 accessory drive belt is built for accessory drive systems that need a durable, OE-style replacement belt with stable operation across a wide temperature range. Made from a synthetic rubber compound with a top cog construction, it is sized for 66 in. effective length applications and 36-degree belt geometry.

Fits 1974 Jeep CJ5, Air Conditioning and Power Steering. Fits 1974 Jeep CJ5, Air Conditioning and Idler, without power steering. Fits 1973 Jeep Wagoneer, Air Conditioning and Air Pump. Fits 1973 Jeep Wagoneer, Air Conditioning and Idler, without power steering. Fits 1972 Ford E-100 Econoline, Air Conditioning, serpentine belt for vehicles with factory air.

  • Synthetic rubber compound for consistent belt performance
  • Top cog construction for flexibility in accessory drive routing
  • Black finish with .53 in. top width
  • Effective length: 66 in. (1676.40 mm)
  • Outside circumference: 66.27 in. (1683.26 mm)
  • Operating temperature range: -35 to 175 degrees
  • Built to SAE J636 and SAE J637 standards

Fitment and Application Details

This Dayco 17660 belt is listed for 1974 Jeep CJ5, 1973 Jeep Wagoneer, and 1972 Ford E-100 Econoline applications with factory air or accessory drive configurations. It cross-references Gates 9660 and ACDelco 17660 for the same application.

Use this belt when replacing a worn accessory drive belt that has glazing, cracking, noise, or loss of tension in the belt path. It is also a direct replacement choice for vehicles with air conditioning, power steering, air pump, or idler-driven accessory layouts where the specified belt dimensions match.

  • Squealing or chirping from a worn accessory drive belt
  • Cracking, fraying, or glazing on the belt surface
  • Reduced accessory drive performance from belt slip
  • Incorrect belt length after a previous replacement
  • Fitment issues on factory air or accessory-driven belt systems

Installation Notes and Tips

Verify belt routing, pulley alignment, and the required effective length before installation. Confirm the application by vehicle year, make, model, and accessory position, especially on 1974 Jeep CJ5, 1973 Jeep Wagoneer, and 1972 Ford E-100 Econoline configurations. Inspect related pulleys and tensioning components for wear before installing the new belt.

Quality Assurance

Dayco manufactures this belt to SAE J636 and SAE J637 standards, with a synthetic rubber compound and top cog design selected for dependable accessory drive service across a broad operating temperature range.

Related reading

This part fits 7 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1974JeepCJ53.8LL6Air Conditioning and Power Steering—
1974JeepCJ53.8LL6Air Conditioning and Idlerwithout power steering
1974JeepCJ54.2LL6Air Conditioning and Power Steering—
1974JeepCJ54.2LL6Air Conditioning and Idlerwithout power steering
1973JeepWagoneer4.2LL6Air Conditioning and Air Pump—
1973JeepWagoneer4.2LL6Air Conditioning and Idlerwithout power steering
1972FordE-100 Econoline4.9LL6Air ConditioningSerpentine Belt for vehicles with Factory Air
Directly replaces or cross-references 84 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 2T17660ACDelco — 9660HDACDelco — 17660AMC — 3191030Bando — B3650CARQUEST — 2/9660PBCARQUEST — 9660CARQUEST — 9660HDCummins — 3040334DAF — 238670Dynacraft — D1102-0240Dynacraft — D1102-3987Ford — C6OE-8620-GFord — C9PZ-8620-HBFord — D1TE-8620-DAFord — D2TE-8620-BCAFord — D5PZ-8620-VFord — D20E-8620-FAFord — E0HT-8620-TAFord — E0HT8A615-JAFord — E1HZ-8620-AFord — E5TE-8A615-C1AFord — E5TE-8620-K1AFreightliner — GT17662Freightliner — GTFLN9660Gates — 2/9660PBGates — 13A1675Gates — 8399Gates — 9660Gates — 9660HDGeneral Motors — 796432General Motors — 2332457General Motors — 2457779General Motors — 2490832General Motors — 3943162General Motors — 9433936General Motors — 11502409Goodyear — 2/17661TTGoodyear — 17661John Deere — 61X16275EJohn Deere — 61X18276AJohn Deere — AR74662John Deere — AT76490John Deere — H94373John Deere — RE29018Lazorlite — L38-1675Mack — 88GB354P2Mack — 88GB354P6Mack — 88GB354P52Mack — 88GB360P5Mack — 88GB437P2Mack — 88GB439P662Mack — AV1312.5X1675LAMassey Ferguson — 274339M91Mitsuboshi — MF6650Mopar — B17661AMopar — B17665Mopar — B17665AMotorcraft — JC-661Motorcraft — JC-661CMotorcraft — JC-661LMotorcraft — JC-664NAPA — 25-9660NAPA — 25-9660-2NAPA — 25-9660HDNAPA — 25-16755NAPA — 25-16755-2Navistar — 414342-C1Navistar — 414342-C11Navistar — 414343-C91Navistar — 488882-C1Navistar — 488883-C91Navistar — 488884-C91Navistar — 2995967-X91Optibelt — 12.5X1675Pirelli — 17-664Thermo-King — 2028B89H55White — 04-9042859White — 20804-5142White — 8001794White — 8500099White — 8500200White — V1090853White — V1091004