Dayco 15420 accessory drive belt for the 1985-1986 Ford F-150 6-cylinder 4.9L and other vehicles carries engine power from the crankshaft to the belt-driven accessories. Depending on the application, it can drive the power steering pump, fan, alternator, water pump, air pump or air conditioning compressor.
- Synthetic rubber compound
- Bottom cog construction, not banded
- 36-degree belt angle
- Built to SAE J636 and SAE J637 standards
- Operating temperature range of -35°F to 175°F (-37.2°C to 79.4°C)
Quick facts
- Part: Dayco 15420 accessory drive belt
- Fits: the 1985-1986 Ford F-150 6-cylinder 4.9L and other vehicles
- Position: power steering, fan and alternator, water pump and alternator, fan and power steering, fan, alternator and air conditioning, alternator and air pump, fan to air conditioning
- Material: Synthetic rubber compound
- Condition: New
A worn Dayco accessory drive belt can show cracks across the cogs, frayed edges or a squeal at start-up. Before you replace it, rule out a pulley that binds or a tensioner that has lost its spring force, because those can also cause belt noise and wear.
Fits
The belt is listed for a wide range of Ford, Chevrolet and Chrysler models, led by the 1985-1986 Ford F-150 6-cylinder 4.9L, the 1985-1986 Ford F-250 6-cylinder 4.9L and the 1983-1984 Chevrolet Impala V6 3.8L, the 1983-1985 Impala V8 5.0L or 5.7L and the 1985 Impala V6 4.3L.
Specifications
Fit and size
- Position: power steering, fan and alternator, water pump and alternator, fan and power steering, fan, alternator and air conditioning, alternator and air pump, fan to air conditioning
- Quantity per application: 1 or 2, depending on the vehicle and engine
- Belt angle: 36 degrees
Build and materials
- 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
In the box
One accessory drive belt. The quantity varies by vehicle and engine; the 1985-1986 Ford F-150 6-cylinder 4.9L takes two, so order two for that truck.
Interchange: L37-1065 · 25-10683 · 25-10684 · 25-7420 · 13-421
FB15420 · 5420 · 742 · 2420 · B2416 · RPF2420 · 7420 · 42013 · 15425 · 13420
This part cross-references / interchanges with the following part numbers:
15420, FB15420, 5420, 742, 2420, B2416, RPF2420, 7420, 42013, 15425, L37-1065, 13420, 25-10683, 25-10684, 25-7420, 13-421, 4027330, J3177281, JY013421, 5133173, D1102-2461, D1102-2469, C6AE-8620-H, E4TE-8620-M, E4TE-8A615-FA, GT15425, GTFLN8419, 25502290, 458567, 464632, 9433634, 9433737, 38763-657-0030, 38763-671-0030, 258955, MF1420, REMF-1415
Frequently Asked Questions
Is the Dayco 15420 belt right for the 1985-1986 Ford F-150 6-cylinder 4.9L?
Yes. Dayco 15420 is listed for the 1985-1986 Ford F-150 6-cylinder 4.9L, which takes two. If your car is a different one, look it up in the "Vehicles it fits" section.
What temperature range does the Dayco 15420 belt handle?
Dayco 15420 operates from -35°F to 175°F (-37.2°C to 79.4°C). Its compound is synthetic rubber.
Is this accessory drive belt a banded belt?
No. This belt is not banded. It has bottom cog construction and a 36-degree belt angle.
Which SAE standards does this accessory drive belt meet?
This belt is built to SAE J636 and SAE J637.
How do I tell if this accessory drive belt is worn out?
Look it over with the engine off and cool. Cracks in the cogs, frayed edges or a squeal when the engine starts can mean the belt is worn.
