Bando 4PK635 Accessory Drive Belt - Alternator and Air Conditioning, Power Steering or Water Pump and Power Steering
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Bando
 Rib Ace Precision Engineered V-Ribbed Belt

Bando 4PK635 Accessory Drive Belt - Alternator and Air Conditioning, Power Steering or Water Pump and Power Steering

Brand Bando 4PK635
Position Power Steering, Water Pump and Power Steering, and Alternator and Air Conditioning
Top Width 0.56
Effective Length 25.0
Effective Length 635.0
Rib Quantity 4
Inch Number 250k4
Product line Rib Ace Precision Engineered V-Ribbed Belt
Fits Mazda and Mitsubishi · 5 vehicles

OE-spec fit. Precise metric sizing and machine-cut ribs for an exact replacement.

Run Quiet technology. Improves grip and reduces slip for quieter operation.

EPDM construction. Resists wear, heat, and oil for longer belt life.

Cross-references Bando 4PK635, Dayco 5040250 and Gates K040250 for the same application. See all 6.

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Bando 4PK635 Accessory Drive Belt

The Bando Rib Ace Precision Engineered V-Ribbed Belt is built for accessory drive applications that demand stable grip, accurate sizing, and consistent operation. This Bando 4PK635 belt uses precise metric dimensions and OE-style construction to support reliable belt drive performance on select Mitsubishi Expo and Mazda 626 applications.

Key Features

  • Top width: 0.56 in.
  • Effective length: 25.0 in. / 635.0 mm
  • 4-rib V-ribbed belt profile
  • Machine-cut ribs for accurate OE-style fit
  • Flexible, oil- and heat-resistant backing
  • High-strength synthetic rubber ribs for wear resistance
  • Strong tensile cords for high-load accessory drive service
  • Bidirectional cord construction to reduce tracking
  • Soft compound backing to help reduce noise

Product Details

Bando Rib Ace Precision Engineered V-Ribbed Belt products are built around OE-focused sizing and material selection. This 4PK635 accessory drive belt uses EPDM compounding for longer service life, while the rib design and cord construction help maintain grip under load. It is a direct-fit style belt for accessory drive systems on the 1995 Mitsubishi Expo, 1993-1994 Mitsubishi Expo, and 1986-1987 Mazda 626.

This part cross-references Dayco 5040250 and Gates K040250 for the same application. Search terms such as Mitsubishi Expo accessory drive belt 4PK635 and Mazda 626 alternator and air conditioning belt 4PK635 are commonly used when matching this belt by vehicle and position.

Common Uses

  • Restoring belt drive operation after cracking, glazing, or rib wear
  • Correcting belt noise caused by slip or poor belt grip
  • Replacing a stretched belt that no longer maintains proper tension
  • Addressing accessory drive issues on Mitsubishi Expo power steering and water pump applications
  • Replacing the alternator and air conditioning belt on Mazda 626 models

Installation Notes

Verify belt routing, rib count, and effective length before installation. Confirm the accessory drive path and pulley alignment on the vehicle, then inspect tensioner condition and pulley surfaces for wear. For fitment reference, this belt fits 1995 Mitsubishi Expo, water pump and power steering; 1993-1994 Mitsubishi Expo, power steering; and 1986-1987 Mazda 626, alternator and air conditioning.

Quality Assurance

Bando Rib Ace belts are engineered to exceed OE manufacturing specifications and use proprietary EPDM material technology for extended service life. The construction also includes a flexible backing and bidirectional cord design to support quieter, more stable operation in demanding accessory drive systems.

Related reading

This part fits 5 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
1995MitsubishiExpo2.4LL4Water Pump and Power SteeringRib Ace Precision Engineered V-Ribbed Belt
1994MitsubishiExpo2.4LL4Power SteeringRib Ace Precision Engineered V-Ribbed Belt
1993MitsubishiExpo2.4LL4Power SteeringRib Ace Precision Engineered V-Ribbed Belt
1987Mazda6262.0LL4Alternator and Air ConditioningRib Ace Precision Engineered V-Ribbed Belt
1986Mazda6262.0LL4Alternator and Air ConditioningRib Ace Precision Engineered V-Ribbed Belt
Directly replaces or cross-references 6 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Bando — 4PK635Dayco — 5040250Gates — K0402504K25025-040250PK040250