2021 Ford Explorer Serpentine Belt
Part numbers, routing diagram, and replacement instructions for the 2.3L EcoBoost, 3.0L EcoBoost, and 3.3L Hybrid engines.
AI-generated reference. Always verify torque values, fluid capacities, intervals, and procedures against the manufacturer's service manual or OEM repair information before performing work. Repairius is not liable for damage from acting on this content without verification.
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Quick answer
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Belt part numbers (2.3L EcoBoost):
- OEM Ford: JK6-882-A
- Gates: K060875
- Dayco: 5060875
- Continental: 4060875
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Belt part numbers (3.0L EcoBoost & 3.3L Hybrid):
- OEM Ford: JK6-882-A
- Gates: K060875
- Dayco: 5060875
- Continental: 4060875
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Belt length & rib count (all engines): 87.5 inches, 6-rib
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Auto-tensioner part number: Ford LB5Z-6B209-A
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Idler pulley part number: Ford GB5Z-8678-A
Belt routing
Before removing the old belt, take a clear photo of the routing from a few angles. This will be your best guide. The path is as follows: from the crankshaft pulley, the belt goes to the A/C compressor, then up to the idler pulley, across to the alternator, down to the power steering pump, around the water pump, and finally to the tensioner.
How to replace the serpentine belt
To replace the belt, use a serpentine belt tool or a 3/8" breaker bar to rotate the auto-tensioner and release tension on the belt. Slip the old belt off and carefully route the new one, ensuring it is properly seated in all the pulley grooves. It is recommended to replace the tensioner and idler pulley at the same time as the belt, as these components can also wear out and cause belt-related issues.
Replacement interval
Ford recommends inspecting the serpentine belt at every service and replacing it every 100,000 miles, or sooner if signs of wear are present.
Signs of a failing belt or tensioner
Look for cracks, fraying, or glazing on the belt. A failing tensioner may cause a rattling or grinding noise, or you may notice the belt slipping (a high-pitched squeal).
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More specs for the 2021 Ford Explorer
Oil Capacity & Filter
Capacity, weight, filter PN, drain plug torque, change interval.
Fluid Type Specs
Engine oil, coolant, ATF, diff, brake, PS, DEF — with OEM spec numbers.
Coolant Capacity & Type
Total system capacity, OEM coolant spec, flush interval, bleed tips.
Transmission Fluid & Service
Trans model, fluid spec, capacity, filter PN, service interval.
Torque Specifications
Lug nuts, drain plug, caliper, axle nut, plug, key fasteners.
Brake Pad & Rotor Specs
Pad PNs, rotor size, min thickness, caliper torque.
Tire Size & Pressure
OEM size, cold psi, bolt pattern, wheel size, TPMS.
Battery Size & Group
Group size, CCA, AGM/flooded, dimensions, reset note.
A/C Refrigerant & Oil
R-134a or R-1234yf, charge oz, PAG oil spec.
Bulb Sizes (Headlight, Tail, Fog)
Headlight, fog, tail, turn, reverse, interior.
Factory Maintenance Schedule
Service intervals by mileage, severe-duty notes, known issues.
Towing Capacity & Payload
Max tow, payload, GVWR/GCWR, hitch class by trim.
Fuse Box Diagram & Amperage
Fuse box locations, layout, amps, and what each fuse controls.
Wheel Alignment Specifications
Camber, caster, toe ranges (front & rear), adjustability notes.
Paint Color Codes
All factory colors with paint codes, sticker location, touch-up tips.
Wiper Blade Sizes
Driver/passenger/rear blade size, attachment, OEM + cross-refs.
Spark Plug Type & Gap
Plug PN, gap, torque, interval by engine.
Transmission & Axle Gear Ratios
Trans gear ratios, axle ratios, RPO codes, tow vs MPG impact.
Key Fob Programming
DIY programming steps, FCC ID, fob PN, battery, transponder.
Same spec — other model years
Maintenance & repair guides
2021 Ford Explorer Maintenance Schedule →
Available maintenance guidance; confirm the manufacturer schedule.
Repair planning references →
Plan the scope of work; detailed procedures need configuration-matched evidence.
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