Two belts are present in a 2004 Honda Odyssey: one timing belt and one serpentine (accessory) belt.
In the 2004 Odyssey’s 3.5L V6 engine, the timing belt coordinates the camshafts and drives the water pump, while the serpentine belt powers the engine’s accessories, such as the alternator, power steering pump, and air conditioning compressor.
Belt configuration in the 2004 Odyssey
To understand how the belts function, it helps to delineate their roles and what they drive.
- Timing belt: Synchronizes the camshafts and drives the water pump.
- Serpentine (accessory) belt: Drives the alternator, power steering pump, and air conditioning compressor.
Maintenance practices commonly involve considering the timing belt (and the water pump) together due to their shared path and service life. Always refer to the owner's manual or a Honda-certified technician for the exact replacement interval for your vehicle.
Maintenance and replacement intervals
For most 3.5L Honda V6 engines, timing belt replacement is recommended around the 105,000-mile mark, though some guidelines cite a range around 90,000–105,000 miles. Specific intervals can vary by model year and service history, so consult the owner's manual or a Honda service professional to confirm the correct interval for your 2004 Odyssey. When the belt is due, mechanics often inspect or replace the water pump, tensioners, and idlers as part of the same service.
Summary
The 2004 Honda Odyssey has two belts: a timing belt and a serpentine belt. The timing belt drives the camshafts and water pump, while the serpentine belt powers the alternator, power steering pump, and AC compressor. Replacement intervals are typically around the 90,000–105,000 mile range, but always verify with the official manual or a qualified technician.