Roadmax 5K398AP Serpentine Belt - Alternator and Air Conditioning
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Roadmax
 Automotive V-Ribbed Belt (Standard)

Roadmax 5K398AP Serpentine Belt - Alternator and Air Conditioning

Brand Roadmax 5K398AP
Position Alternator and Air Conditioning
Material Epdm
Top Width .667
Top Width 17
Cord Material Polyester
Cross Section Designation K
Effective Length 1013
Effective Length 39.87
Outside Circumference 1027
Outside Circumference 40.43
Type Automotive v-ribbed belt (standard)
Rib Quantity 5
Product line Automotive V-Ribbed Belt (Standard)
Fits Mazda · 7 vehicles

Standard V-ribbed belt. A practical replacement for everyday accessory drive service.

EPDM construction. Resists wear while maintaining reliable belt performance.

Polyester cord reinforcement. Helps maintain strength and stable tension under load.

Cross-references Bando 5PK1010, Continental 5K1010 and Continental 5K1015 for the same application. See all 20.

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Roadmax 5K398AP Serpentine Belt Overview

The Roadmax 5K398AP is a standard automotive V-ribbed belt built for accessory drive service where dependable operation matters more than premium-performance tuning. Made with EPDM and polyester cord reinforcement, it is sized for the alternator and air conditioning drive on select Mazda applications.

Roadmax’s Automotive V-Ribbed Belt (Standard) line is aimed at budget-conscious buyers who want a quality replacement belt without stepping up to a premium-duty option. For drivers searching for a Mazda 626 serpentine belt or Mazda Millenia accessory drive belt, this part number provides a direct-fit service solution for the listed applications.

Key Features

  • Part number: 5K398AP
  • Type: Automotive V-Ribbed Belt (Standard)
  • Material: EPDM for everyday accessory drive use
  • Cord material: Polyester reinforcement
  • Rib quantity: 5-rib design
  • Top width: 17 mm (.667 in.)
  • Effective length: 1013 mm (39.87 in.)
  • Outside circumference: 1027 mm (40.43 in.)
  • Cross section designation: K

Detailed Description

The Roadmax 5K398AP serpentine belt is specified for accessory drive systems that power the alternator and air conditioning compressor on select Mazda vehicles. It is listed for 1998-2002 Mazda 626, alternator and air conditioning, and 1999-2000 Mazda Millenia, alternator and air conditioning. This part cross-references Gates K050398 for the same application.

Built as a standard V-ribbed belt, this Roadmax belt uses EPDM construction to handle routine underhood service conditions while maintaining the correct rib profile and length for the listed fitments. If you are replacing a worn Mazda 626 serpentine belt or servicing a Mazda Millenia accessory drive belt, the 5K398AP is sized to match the specified drive layout.

Common Problems This Belt Can Address

  • Squealing or chirping from a worn accessory drive belt
  • Cracking, glazing, or rib wear on the existing serpentine belt
  • Loss of alternator drive due to belt deterioration
  • Reduced air conditioning compressor drive performance from belt slip
  • Incorrect belt length or rib count after a previous replacement

Installation Notes and Tips

Verify the belt routing and compare the old belt length before installation. Confirm the vehicle application by year, make, model, and accessory drive position: Fits 1998-2002 Mazda 626, Alternator and Air Conditioning; Fits 1999-2000 Mazda Millenia, Alternator and Air Conditioning. Inspect pulleys, tensioner operation, and accessory alignment before installing the new belt to help prevent premature wear.

Quality Assurance

Roadmax positions this Automotive V-Ribbed Belt (Standard) line as a practical replacement option for buyers who want quality construction at a value-focused level. EPDM belt material and polyester cord reinforcement support consistent service in the listed Mazda applications.

Related reading

This part fits 7 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersFuel TypePositionNotes
2002Mazda6262.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2001Mazda6262.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2000Mazda6262.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
2000MazdaMillenia2.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
1999Mazda6262.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
1999MazdaMillenia2.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
1998Mazda6262.5LV6GASAlternator and Air ConditioningAvailable Until Stock Depleted; Automotive V-Ribbed Belt (Standard)
Directly replaces or cross-references 20 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bando — 5PK1010Continental — 5K1010Continental — 5K1015Continental — 4050397Dayco — 5050398Drive Rite — 5050398DRGates — K0503985K3985PK10135PVK101025-050398397K5MK398K510503989091602216K3985KL0115908KL4715908AKL70159089UKLG415908