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Micro-V Serpentine Belt for 2004-2007 Peterbilt 357, 378, 379 [12-Rib, 104.500 in. Outside Circumference]
InfoVehicle Info Needed
GATESPART NUMBER: 465-K121039

Micro-V Serpentine Belt for 2004-2007 Peterbilt 357, 378, 379 [12-Rib, 104.500 in. Outside Circumference]

$13782
ShippingShips on 11/13/2026
Lowest PriceLowest Price Guarantee

EPDM Serpentine Belt for Accessory Drives
  • 2004-2007 Peterbilt 357
  • 2005-2007 Peterbilt 378
  • 2005-2007 Peterbilt 379
  • 15.2L L6 Engine
  • K Section
  • 12 Ribs
  • 104.500 in. Outside Circumference
  • 1.647 in. Top Width
  • Sold Individually

    Gates Micro-V serpentine belts use an EPDM rubber compound that resists cracking, glazing and wear over a long service life. The rib profile flexes easily around small pulleys and runs quietly while carrying the full load of the accessory drive.

    Gates K121039 Micro-V Serpentine Belt Features:

    • EPDM Construction Resists Cracking, Glazing and Wear
    • Rib Profile Flexes Around Small Pulleys
    • Runs Quietly with Consistent Grip
    • Cross Section: K
    • Rib Count: 12
    • Outside Circumference: 104.500 in.
    • Top Width: 1.647 in.
    • Position: Fan and Alternator
    • OE Rating: OE Performance
    • Sold Individually

    Vehicle Applications:

    • 2004-2007 Peterbilt 357 15.2L L6
    • 2005-2007 Peterbilt 378 15.2L L6
    • 2005-2007 Peterbilt 379 15.2L L6
    • Part TypeSerpentine Belt
    BrandGATES
    Package Width1.05
    Weight1.05 PG
    Part CategoryReplacement Parts
    Number Of Ribs12
    Top Width (In)1.647
    Top Width (Mm)42
    Oe Comparison RatingOE Performance
    PositionFan and Alternator
    Outside Circumference (In)104.5
    Part FitmentDirect Fit
    SectionK
    Outside Circumference (Mm)2654
    Vendor Part NumberK121039
    Package Qty1
    Package TypeEA
    Some parts are not legal for use in California or other states with similar laws / regulations
    p65 warning