Dayco 4PK950EE Serpentine Belt - Air Conditioning
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Dayco
 Supersedes E040365

Dayco 4PK950EE Serpentine Belt - Air Conditioning

Brand Dayco 4PK950EE
Position Air Conditioning
Material Epdm4
Top Width .54
Color Black
Effective Length 37.402
Effective Length 950.02
Outside Circumference 37.968
Outside Circumference 964.39
Rib Quantity 4
Cross Section K-section
Free Length 36.5
Free Length 927.100
Maximum Operating Temperature 100
Maximum Operating Temperature 212
Minimum Operating Temperature -42.7
Minimum Operating Temperature -45
Rib Depth Standard
Rib Profile Straight rib
Standards Sae j1459
Product line Supersedes E040365
Fits Cadillac and Chevrolet · 17 vehicles

Elastic design. Matches self-tensioning accessory drive systems on listed applications.

EPDM4 construction. Built with a 4-rib K-section profile and straight ribs.

Supersedes E040365. Use this part number when verifying the replacement belt.

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Overview

This Dayco serpentine belt, part number 4PK950EE, is an elastic accessory drive belt for air conditioning applications. It uses EPDM4 construction with a 4-rib K-section profile and straight ribs for consistent belt tracking.

Compatible With Cadillac CT5, Chevrolet Camaro, and Cadillac CTS air conditioning applications, this belt is identified as a superseding replacement for E040365. The 4PK950EE part number appears in the fitment and product identification for easy matching during service.

Key Features

  • EPDM4 material for durable accessory drive service.
  • 4-rib K-section design with straight rib profile.
  • Elastic self-tensioning belt design on listed applications.
  • Black finish with SAE J1459 standard reference.
  • Supersedes Dayco E040365 for the listed applications.

Detailed Description

Dayco 4PK950EE is a serpentine belt built for air conditioning drive use on select Cadillac and Chevrolet applications. The belt’s EPDM4 construction, standard rib depth, and 4-rib layout support stable operation in accessory drive systems, while the elastic design matches applications that use self-tensioning belt routing. The 4PK950EE part number is useful when verifying the correct replacement against service information or an existing belt marking.

This part cross-references Monroe Shocks & Struts (e.g., E040365) for the same application.

What It Is Used For

  • Restoring proper accessory drive operation when the belt is worn or stretched.
  • Addressing belt noise caused by glazing, cracking, or rib wear.
  • Replacing a belt that no longer maintains correct tension.
  • Servicing air conditioning drive systems on listed Cadillac and Chevrolet models.

Installation Notes and Tips

Fits 2022-2025 Cadillac CT5, Air Conditioning; installation tool required. Fits 2016-2024 Chevrolet Camaro, Air Conditioning; elastic self-tensioning belt. Fits 2016-2019 Cadillac CTS, Air Conditioning; elastic self-tensioning belt. Confirm belt routing, rib count, and effective length before installation. Because this application uses an elastic belt design, follow the vehicle service procedure for removal and installation.

Quality Assurance

Dayco identifies this belt as a superseding replacement for E040365 and lists SAE J1459 as the applicable standard reference.

Related reading

This part fits 17 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2025CadillacCT56.2LV8Air ConditioningInstallation Tool Required; Supersedes E040365
2024CadillacCT56.2LV8Air ConditioningInstallation Tool Required; Supersedes E040365
2024ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2023CadillacCT56.2LV8Air ConditioningInstallation Tool Required; Supersedes E040365
2023ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2022CadillacCT56.2LV8Air ConditioningInstallation Tool Required; Supersedes E040365
2022ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2021ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2020ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2019CadillacCTS6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2019ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2018CadillacCTS6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2018ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2017CadillacCTS6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2017ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2016CadillacCTS6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365
2016ChevroletCamaro6.2LV8Air ConditioningElastic Self-Tensioning Belt; Supersedes E040365