Dayco 17670 accessory drive belt for the 1984-1990 Chevrolet C70 V8 10.4L, the 1987 C70 V8 6.0L or 7.0L and other vehicles carries engine power from the crankshaft to the belt-driven accessories. When the belt wears, the accessories it drives can slow down or stop.
- Bottom cog construction
- Synthetic rubber compound
- Operating temperature range of -35 F to 175 F (-37.2 C to 79.4 C)
- 36-degree belt angle
- Standards listed: SAE J636 and SAE J637
Quick facts
- Part: Dayco 17670 accessory drive belt
- Fits: the 1984-1990 Chevrolet C70 V8 10.4L, the 1987 C70 V8 6.0L or 7.0L and other vehicles
- Material: Synthetic rubber compound
- Condition: New
A belt that squeals, slips, or shows cracks and fraying can be worn out. Those signs alone do not prove the belt is the problem, since a weak tensioner can make a similar noise.
Fits
The vehicles it fits include the 1984-1990 GMC C7000 V8 10.4L, the 1987 C7000 V8 6.0L or 7.0L and the 1985-1990 Western Star 4800 10.5L, plus the Chevrolet models above. That Western Star takes two belts, and the quantity differs on other applications. If your vehicle is not named here, look up its year and engine in the "Vehicles it fits" section.
Specifications
Fit and size
- Quantity per vehicle: 1 or 2, depending on the application
- Angle: 36 degrees
Build and materials
- Belt construction: Bottom cog
- Banded belt: No
- Material: Synthetic rubber compound
- Standards: SAE J636, SAE J637
- Operating temperature: -35 F to 175 F (-37.2 C to 79.4 C)
- Condition: New
Product information is for general reference and may contain errors. See our Disclaimer.
Frequently Asked Questions
Does the Dayco 17670 accessory drive belt fit the 1985-1990 Western Star 4800 10.5L?
Yes, Dayco 17670 fits the 1985-1990 Western Star 4800 10.5L, and that application takes two belts.
What temperatures can this accessory drive belt operate in?
This belt operates from -35 F to 175 F, which is -37.2 C to 79.4 C.
Is the Dayco 17670 a banded belt, and what is it made of?
No, the Dayco 17670 is a single belt, not banded. It has bottom cog construction and a synthetic rubber compound.
Which SAE standards are listed for this belt?
This belt is listed to SAE J636 and SAE J637.
What should I look for on a worn bottom cog belt?
With the engine off and cool, look for cracks, fraying or glazing on the belt. A squeal in normal driving can also mean wear.
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