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DAYCO 5050378  
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Actual Belt May be W-Ribbed or V-Ribbed Due To Running Change
DAYCO 5050378 Specifications
Cross SectionK-Section
Effective Length37.80 in.
Effective Length960.12 mm
MaterialEPDM, Aramid Reinforced
Maximum Operating Temperature100° C
Maximum Operating Temperature212° F
Minimum Operating Temperature-42.7° C
Minimum Operating Temperature-45° F
Outside Circumference38.46 In.
Outside Circumference976.89 mm
Rib Count5
Rib DepthStandard
Rib ProfileStraight Rib
StandardsSAE J1459, SAE J2432
Top Width.68 in.
Dayco® engineered to conform to high mileage, worn or misaligned drives without a sacrifice in quiet, long-lasting performance. Constructed with Aramid-reinforced EPDM compounds, it delivers more than OE required quality… it delivers the solution to troublesome drive problems.

Features & Benefits:
  • Dayco Poly-Rib Belts meet or exceed SAE J1459 and SAE J2432 specifications.
  • Aramid noise resistant fibers embedded in the rubber make this belt run quieter in worn or misaligned pulleys
  • No-Noise Advanced Design EPDM rubber compound for quiet extended life
Service Tip: Always replace belts and tensioners together. Old tensioners will reduce a belt's lifespan, and can lead to issues such as overheating, a dead battery, diminished power steering, or poor air conditioning performance.
Which Belt Is Right For You?

Type Durability Quiet Operation Performance
Standard Replacement
★★ ★★★ ★★
Heavy Duty
★★★ ★★ ★★★
High Performance
★★ ★★★ ★★★

Information About Serpentine Belts

Alternate/OEM Part Number(s): 38920P5G0040, 38920PY3A010

Warranty Information:
12 Months/12,000 Miles