2017 Toyota Camry Serpentine Belt: Routing, Replacement, & Part Numbers

Quick Answer

For the 2017 Toyota Camry, the serpentine belt specifications vary slightly depending on the engine. This guide focuses on the most common configurations.

2.5L 4-Cylinder (2AR-FE Engine)

• Belt Length: Approximately 98.7 inches (2508mm)
• Rib Count: 6-Rib
• OEM Belt PN: Toyota 90916-A2027
• Aftermarket Cross-References:
  • Gates K060987
  • Dayco 5060980
  • Continental Elite 4060987
• Auto-Tensioner PN: Toyota 16620-0V010 (similar aftermarket often Gates 38166)
• Idler Pulley PN: Toyota 16603-36010 (similar aftermarket often Gates 36294)

3.5L V6 (2GR-FE Engine)

• Belt Length: Approximately 88.0 inches (2235mm)
• Rib Count: 6-Rib
• OEM Belt PN: Toyota 90916-02685
• Aftermarket Cross-References:
  • Gates K060875
  • Dayco 5060875
  • Continental Elite 4060875
• Auto-Tensioner PN: Toyota 16620-31013 (similar aftermarket often Gates 38159)
• Idler Pulley PN: Toyota 16603-0P030 (similar aftermarket often Gates 36209)

Belt Routing

Always photograph your existing belt routing before removal! This is the best way to ensure correct reinstallation, especially since diagrams can be misinterpreted. The routing generally involves the following components, though the exact path can vary slightly between the 4-cylinder and V6 engines. This description attempts to provide a general direction of travel.

2.5L 4-Cylinder Routing (Driver's Side Facing Engine)

1. Begin at the Crankshaft Pulley (bottom center) traveling clockwise.
2. The belt then goes up and to the right to the A/C Compressor Pulley.
3. From the A/C compressor, the belt travels up and to the left around the Idler Pulley (smooth). The belt rides on the smooth backside of this pulley.
4. Continuing up and to the left, the belt wraps around the Alternator Pulley.
5. From the Alternator, the belt heads down and to the left to the Power Steering Pump Pulley.
6. After the power steering pump, the belt goes down and to the right to the Water Pump Pulley.
7. Finally, the belt routes under the Automatic Tensioner Pulley (smooth), which keeps proper tension, before returning to the crankshaft pulley.

3.5L V6 Routing (Driver's Side Facing Engine)

1. Start at the Crankshaft Pulley (bottom center) traveling clockwise.
2. The belt then goes up and to the right to the A/C Compressor Pulley.
3. From the A/C compressor, the belt travels up and to the left around an Idler Pulley (ribbed).
4. Continuing up and to the left, the belt wraps around the Alternator Pulley.
5. From the Alternator, the belt heads down and to the left to the Power Steering Pump Pulley.
6. After the power steering pump, the belt goes down and to the right to the Water Pump Pulley.
7. Finally, the belt routes under the Automatic Tensioner Pulley (smooth), before returning to the crankshaft pulley.

How to Replace the Serpentine Belt

Replacing the serpentine belt on a 2017 Toyota Camry is a straightforward process, though proper tools are essential.

Tools Needed:

• Serpentine belt tool or a 3/8-inch drive breaker bar / ratchet.
• Socket to fit the tensioner arm bolt (often 19mm or a square drive for a breaker bar).

Steps:

1. Locate the Automatic Belt Tensioner: This component is the key to removing and installing the belt. It will have a pulley and an arm that pivots.
2. Relieve Tension: Using your serpentine belt tool or breaker bar, apply counter-clockwise (or sometimes clockwise, depending on the engine — observe the tensioner's movement) rotational force to the tensioner arm bolt/square drive. This will compress the tensioner and loosen the belt.
3. Remove the Old Belt: While holding the tensioner in the loosened position, carefully slip the old belt off one of the accessories (like the alternator or power steering pump) and then remove it completely from all pulleys.
4. Inspect Pulleys: Before installing the new belt, spin each idler and accessory pulley by hand. Listen for grinding noises and feel for excessive play or roughness. Replace any noisy or loose pulleys.
5. Route the New Belt: Following the diagram you photographed or the routing description above, carefully route the new belt around all pulleys EXCEPT the tensioner's pulley. Ensure the ribs on the belt align with the grooves on the ribbed pulleys.
6. Install on Tensioner: With the belt routed correctly everywhere else, once again apply force to the tensioner arm to relieve tension, and then slip the new belt over the tensioner pulley. Double-check that the belt is fully seated in all grooves.
7. Release Tension: Slowly release the tensioner arm, allowing it to apply proper tension to the new belt.
8. Verify Routing: Give all pulleys and the belt a visual inspection to ensure everything is correctly aligned and the belt is seated properly.
9. Start Engine: Briefly start the engine and listen for any unusual noises (squealing, chirping). Turn off the engine and re-inspect the belt for proper alignment after a short run.

Replacement Interval

Toyota generally recommends inspecting the serpentine belt at every service interval (typically 5,000-10,000 miles or 6 months). A common replacement interval for a serpentine belt is around 60,000 to 100,000 miles, or if signs of wear are observed. Aggressive driving or extreme temperatures can shorten its lifespan. It's always best to consult your owner's manual for the specific recommended maintenance schedule for your vehicle.

Signs of a Failing Belt or Tensioner

The serpentine belt powers critical components of your engine. A failing belt or tensioner can lead to serious issues, so it's important to recognize the warning signs:

• Squealing or Chirping Noises: This is the most common symptom. It often indicates a loose, worn, or misaligned belt, or a failing pulley bearing. The noise might be worse on cold starts or when the engine is under load.
• Cracks, Fraying, or Glazing on the Belt: Visually inspect the belt. Deep cracks, missing chunks, or a shiny, glazed appearance on the ribbed side indicate it needs immediate replacement.
• Loss of Power Steering: The power steering pump is belt-driven. If the belt slips or breaks, you'll suddenly find it very difficult to turn the steering wheel.
• Overheating Engine: The water pump circulates coolant, and it's also belt-driven. A broken belt means no coolant circulation, leading to rapid engine overheating.
• Battery Not Charging / Dashboard Battery Light: The alternator charges the battery. If the belt fails, the alternator stops working, and your battery will eventually die, illuminating the battery warning light.
• A/C Not Working: If the A/C compressor is belt-driven, the air conditioning system will cease to function.
• Worn or Sticking Tensioner: If the automatic tensioner's movement is stiff, or if it doesn't maintain proper tension on the belt, the belt can slip, causing noise and premature wear. You might see the tensioner pulley vibrating excessively.

Don't ignore these symptoms. A broken serpentine belt can leave you stranded and potentially cause damage to other engine components.

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