2019 Ford Explorer Serpentine Belt: Routing & Replacement Guide
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:
- Belt Length & Rib Count: Varies by engine. See below for details.
- OEM Belt P/N: Varies by engine.
- Aftermarket Cross-references: Consult specific engine section.
- Auto-Tensioner P/N: Varies by engine.
- Idler Pulley P/N: Varies by engine.
The serpentine belt on your 2019 Ford Explorer is a critical component, driving essential accessories like your alternator, power steering pump, air conditioning compressor, and water pump. Understanding its routing and knowing when to replace it is key to avoiding unexpected breakdowns.
Belt Routing (3.5L Duratec / 3.5L EcoBoost / 2.3L EcoBoost)
Always take a clear photo of your existing belt routing before removal! This visual aid will be invaluable during installation.
3.5L Duratec (Non-EcoBoost) and 3.5L EcoBoost Routing:
- Starting from the crankshaft pulley (bottom-most, largest pulley),
- The belt goes down to the A/C compressor pulley (bottom passenger side).
- From the A/C compressor, it routes up and over the smooth idler pulley (located above the A/C compressor).
- Next, it travels down to the alternator pulley (top passenger side).
- From the alternator, it moves across to the power steering pump pulley (top driver's side).
- It then goes down to the water pump pulley (middle driver's side).
- Finally, it loops around the automatic tensioner pulley (located below the power steering pump and water pump) before returning to the crankshaft, completing the circuit.
2.3L EcoBoost Routing:
- Begin at the crankshaft pulley (bottom-most, largest pulley).
- Proceed down to the A/C compressor pulley (bottom passenger side).
- From the A/C compressor, the belt goes up and over one of the smooth idler pulleys.
- It then wraps around the alternator pulley (top passenger side).
- Next, it often goes around a second idler pulley (if equipped, check your specific setup).
- From there, it typically routes to the water pump pulley (this engine often has an electric power steering pump, eliminating a hydraulic power steering pulley).
- The belt then loops around the automatic tensioner pulley, usually located near the bottom, before returning to the crankshaft.
How to Replace the Serpentine Belt
Tools Needed: Serpentine belt tool kit or a 3/8
More specs for the 2019 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
2019 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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