Prices for a knock sensor vary by source and sensor type. For a 2004 Accord, expect roughly $20–$70 for an aftermarket sensor, $90–$180 for an OEM dealer part, and $5–$40 for a used or remanufactured unit. If you hire a shop to install it, add labor costs on top of the part price.
Understanding what you’re buying
The knock sensor monitors engine detonation to protect the engine from damage. The 2004 Accord lineup includes both four-cylinder and V6 configurations, and some variants may use different sensor counts or placements. Confirm the exact sensor part number and fitment using your VIN and engine code to avoid buying the wrong part.
Why prices vary
Prices differ based on whether the part is OEM or aftermarket, new versus used, and where you buy it. Availability and warranty options also affect price, with dealer-sold items often commanding higher prices.
Pricing snapshot by source
Below are typical ranges you’ll encounter when shopping for a knock sensor for a 2004 Honda Accord. These figures reflect common listings across major retailers in 2024–2025.
- Aftermarket / auto parts stores: typically $20–$70 for a new sensor that fits the 2004 Accord’s four-cylinder or V6 options.
- OEM / dealer parts: typically $90–$180 for a new sensor, with some variants or kits priced higher.
- Used, salvage, or remanufactured: typically $5–$40 depending on condition and warranty.
Prices can vary by region, seller, and whether the sensor is sold individually or as part of a kit. Always verify compatibility with your VIN and engine code before purchasing.
Installation and labor considerations
Replacing a knock sensor is usually straightforward but can be tricky if the sensor sits in a tight or hard-to-access spot. Expect about 0.5–2 hours of labor, depending on engine layout and access. Labor rates typically range from $75 to $150 per hour, so total shop costs can vary widely.
Summary
For a 2004 Honda Accord, expect the sensor itself to cost anywhere from roughly $5 to $180, depending on condition and source. Plan for additional labor costs if you’re having a shop do the replacement. Always verify the exact sensor part number and compatibility with your VIN to ensure a correct fit.