Choosing the Right Accessory Drive Belts for Your 1987-1993 Mazda B2600
Keep your classic Mazda truck running smoothly by understanding its accessory drive belt system.
- Your B2600 uses multiple V-belts, not a single serpentine belt.
- It is highly recommended to replace all accessory belts at the same time.
- Reputable aftermarket brands like Gates, Continental, and Dayco are excellent choices for this truck.
- Ensure you buy the correct belts for your specific year, as the engine changed in 1989.
Signs of a Failing Accessory Drive Belt
The accessory drive belts on your B2600 are made of rubber and wear out over time. Before a belt breaks, it will usually give you some warning signs. Paying attention to these signs can prevent you from being stranded.
Common Failure Symptoms
- Squealing Noises: A high-pitched squeal, especially when you start the engine or turn the steering wheel, is a classic sign of a loose or worn belt. This noise happens when the belt slips on the pulleys. 🎬 Watch: How to diagnose and fix a squeaky belt
- Visible Wear: Inspect your belts. If you see cracks, fraying, glazing (a shiny, smooth surface), or missing pieces of rubber, the belt is old and needs to be replaced.
- Accessory Failure: If your power steering becomes heavy, your battery light comes on, or your A/C stops blowing cold, it's a direct sign that the belt driving that component has failed or is slipping badly.
- Engine Overheating: The belts also drive the water pump on some configurations. If the belt that runs the water pump fails, the engine can overheat quickly, which is a serious problem.
Choosing the Right Aftermarket Belts
For a vehicle like the 1987-1993 Mazda B2600, original equipment (OEM) belts are likely discontinued or hard to find. The good news is that modern aftermarket belts from reputable brands are often made with superior materials and technology compared to what was available in the 1980s and 90s. Brands like Gates, Dayco, and Continental are all reliable choices.
Aftermarket Brand Tiers
- Premium Brands (Gates, Continental): Gates is frequently mentioned by mechanics as a top-tier, reliable choice for belts and hoses. They are known for their durability and precise fit. Continental is also a highly-regarded brand, often used as an original equipment manufacturer for many car brands. You can't go wrong with either of these for your Mazda.
- Standard/Value Brands (Dayco): Dayco is a well-known brand that offers a good balance of quality and price. While some mechanics have personal preferences for other brands, Dayco belts are widely used and meet or exceed OEM specifications, making them a solid choice for most owners.
When ordering, be sure to get the correct belts for your truck's specific engine and accessories (with or without A/C, with or without power steering). There were engine differences between 1987-1988 models and 🎬 See this alternator and belt walkthrough for 1988 models 1989-1993 models, which affects the belts required.
Replacement Cost
The cost to replace accessory drive belts on a B2600 is reasonable. The parts themselves are inexpensive, and the labor is straightforward for a qualified mechanic.
| Part/Service | Estimated Cost |
|---|---|
| New Aftermarket Belts (Set of 2-3) | $20 - $60 |
| Shop Labor | $100 - $200 |
| Total Estimated Cost | $120 - $260 |
Cost estimates are for parts and labor and can vary based on your location and the specific rates of your repair shop.
Frequently Asked Questions
How often should I replace my accessory belts?
For an older vehicle like the B2600, a visual inspection every year is more important than a strict mileage interval. However, if the belts are more than 4-5 years old, it's a good idea to replace them as a preventive measure, even if they look okay. Rubber degrades with age as well as use.
Is this a DIY job?
For someone with basic mechanical skills and tools, yes. The process involves loosening the tension on each belt by adjusting the alternator, power steering pump, or a tensioner pulley, then swapping the old belt for the new one. The key is to get the tension right on the new belts—not too tight, not too loose. A common mistake is improper tension, which causes squealing.
🎬 Watch: How to swap an alternator on the B2600iAre there any recalls on the drive belts for the B2600?
A search of the National Highway Traffic Safety Administration (NHTSA) database shows no open recalls specifically for the accessory drive belts on the 1987-1993 Mazda B2600. Any recalls found for Mazda belts are for much newer models.
My truck has the 2.6L engine. Does it matter which year?
Yes, it matters. The 1987-1988 B2600 used a Mitsubishi-sourced 2.6L engine, while the 1989-1993 B2600i used a Mazda-built 2.6L fuel-injected engine. These engines have different accessory layouts and require different belts. Always confirm your vehicle's year and engine type before purchasing parts.
Helpful Videos
Technical Specifications
OEM Part Numbers: UC87-32-605
System Type: Multiple V-Belts. The number and length of belts vary depending on the engine (pre-1989 vs 1989+) and installed accessories like Air Conditioning and Power Steering.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Mazda B2600: