2020 Honda Odyssey 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: Approximately 80.5 inches
- Rib Count: 6-rib
- OEM Belt PN: 31110-5M1-G01 (Honda Genuine Part)
- Aftermarket Cross-References:
- Gates K060805
- Dayco 5060805
- Continental Elite 4060805
- Auto-Tensioner PN: 31170-5M1-G02 (Honda Genuine Part)
- Idler Pulley PN: 31180-5M1-G01 (Honda Genuine Part)
Belt Routing
Before you begin any work, it's highly recommended to take a clear photograph of the existing serpentine belt routing. This will serve as an invaluable reference during reinstallation.
On the 2020 Honda Odyssey with the 3.5L V6 engine, the serpentine belt follows a specific path to drive various accessories. Starting from the crankshaft pulley (the lowest and largest pulley), the belt typically routes as follows:
- From the crankshaft pulley, the belt travels upward to the A/C compressor pulley.
- From the A/C compressor, it then goes to the idler pulley, which helps guide the belt.
- After the idler pulley, the belt wraps around the alternator pulley.
- From the alternator, it makes its way to the power steering pump pulley.
- Next, the belt goes to the water pump pulley.
- Finally, the belt routes to the automatic tensioner pulley, which maintains proper tension on the belt before returning to the crankshaft pulley to complete the loop.
Always double-check your specific vehicle configuration against your reference photo, as slight variations can occur.
How to Replace the Serpentine Belt
Replacing the serpentine belt on your 2020 Honda Odyssey is a manageable DIY task, but it requires the right tools and a bit of patience. The primary tool you'll need is a serpentine belt tool or a 3/8-inch breaker bar, which will be used to relieve tension from the automatic tensioner.
- Safety First: Ensure the engine is off and cool. Disconnect the negative terminal of the battery for added safety.
- Locate the Tensioner: Identify the automatic belt tensioner. It will have a square opening for your serpentine belt tool or 3/8-inch breaker bar.
- Relieve Tension: Insert your tool into the square opening of the tensioner. Rotate the tensioner counter-clockwise (or clockwise, depending on the tensioner
More specs for the 2020 Honda Odyssey
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
2020 Honda Odyssey 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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