Accessory Drive Belt Guide for the 1973-1980 Dodge CB300 Van
Keep your classic Dodge van's accessories running smoothly with the right V-belts.
- Your CB300 uses multiple V-belts; check your specific engine configuration (A/C, Power Steering) before ordering.
- Squealing noises and visible cracks are clear signs that your belts need to be replaced immediately.
- A broken belt will disable a critical component, leading to engine overheating or a dead battery.
- Reputable aftermarket brands like Gates, Dayco, and Continental offer quality replacements that are often better than the original 1970s technology.
Understanding Your CB300's V-Belt System
The 1973-1980 Dodge CB300 uses a straightforward and robust V-belt system. This means there are several individual belts, each driving one or two accessories. The number and length of the belts your van needs depends entirely on the options it came with from the factory, such as air conditioning or power steering. Because of this, it's crucial to know your van's specific configuration before ordering replacements.
Symptoms of a Failing Accessory Drive Belt
A worn-out V-belt will usually give you a few warning signs before it fails completely. Ignoring these can leave you stranded.
- Squealing Noises: A high-pitched squeal, especially when starting the engine, in wet weather, or during sharp turns, is the most common symptom. This noise is caused by the rubber belt slipping on the metal pulleys due to wear, improper tension, or contamination from fluids like oil or coolant.
- Visible Wear and Damage: Inspect your belts regularly. If you see cracks, fraying, glazing (a shiny, smooth surface), or chunks of rubber missing, the belt is past its service life and needs immediate replacement.
- Accessory Problems: If your headlights are dimming, the battery isn't staying charged, the temperature gauge is climbing, or the power steering feels heavy, it could be due to a slipping or broken belt failing to power the alternator, water pump, or power steering pump.
Pro Tip: The Water Test
If you hear a squeal, you can diagnose its cause with a spray bottle of water. With the engine running, carefully spray a small amount of water on the ribbed side of the noisy belt. If the noise temporarily goes away, it's likely due to a misaligned pulley. If the noise gets louder, the belt tension is likely too loose. If the noise is unchanged, a bearing in one of the pulleys may be failing.
Choosing the Right Aftermarket Belts
For a vehicle of this age, new OEM belts from Mopar are no longer available. However, modern aftermarket belts from reputable brands often exceed the quality of the original 1970s parts due to advances in rubber compounds and manufacturing. Brands like Gates, Dayco, and Continental are all excellent choices that are widely available.
- Good: Dayco is a long-standing brand that produces reliable V-belts suitable for daily use. They offer a good balance of price and performance.
- Better: Continental belts are known for their quality and are often used as original equipment by many manufacturers. They are a solid upgrade for any classic vehicle.
- Best: Gates is highly regarded in both professional and enthusiast circles for producing durable, high-quality belts that often meet or exceed OEM standards. Many mechanics prefer Gates for their reliability and longevity.
Common Ordering Mistake
The most common mistake is ordering the wrong belts. Before you buy, physically check your engine. Count the number of belts and see which accessories they connect to (Alternator, Power Steering, A/C). Write this down and compare it to the part fitment notes to ensure you get the correct set for your specific van.
Accessory Drive Belt Cost for 1973-1980 Dodge CB300
| Category | Price Range |
|---|---|
| New Aftermarket Belts (per belt) | $7.33 - $39.61 |
| Estimated Shop Labor | $100 - $200 |
Note: Prices are estimates and can vary based on your location, the specific brand, and the number of belts being replaced.
Frequently Asked Questions (FAQ)
Can I replace the accessory belts myself?
Yes, this is a very DIY-friendly job for a home mechanic with basic tools. The CB300 uses a manual tensioning system, which means you'll need to loosen the bolts on an accessory (like the alternator), pivot it to release tension, swap the belt, and then re-tension it. A common rule of thumb for proper tension is that you should only be able to twist the belt about 90 degrees at its longest point.
How many belts does my CB300 need?
It depends on your van's options. A base model might only have one or two belts for the alternator and water pump. A fully-optioned van with power steering and air conditioning could have three or four belts. You must check your specific engine to know for sure.
Are there any recalls for the drive belts on this van?
No, searches of the National Highway Traffic Safety Administration (NHTSA) database show no recalls or technical service bulletins (TSBs) related to the accessory drive belts for the 1973-1980 Dodge CB300.
Should I get a standard or notched V-belt?
Notched (or cogged) V-belts are generally a good choice. The notches allow the belt to bend more easily around smaller pulleys and can help dissipate heat, which may improve belt life. For most applications on the CB300, a quality notched belt from a brand like Gates is an excellent option.
Technical Specifications
System Type: Multiple V-Belt System. Belt specifications (length, width) vary based on engine size and accessory options (e.g., with/without A/C, with/without Power Steering). Original OEM part numbers are largely obsolete; use aftermarket catalogs with your vehicle's specifications for correct fitment.
We Have This Part in Stock
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.