However, common places to look include:
* On the differential housing itself: This is the most common location. Look for a raised or stamped number sequence. It might be on the top, side (often near the axle tubes), or bottom of the housing. The numbers might be near the fill plug or axle seals, or sometimes they are located elsewhere on the housing.
* On the differential cover (if removable): Sometimes the ratio is stamped on the cover itself, especially if the cover has been replaced.
* On a tag or sticker on the differential: Some manufacturers used tags or stickers. However, these are more prone to wear and tear and might be missing.
To improve your chances of finding it:
1. Clean the differential: Dirt and grime can obscure the stamping. Use a wire brush or degreaser.
2. Use a flashlight: The stamping might be faint.
3. Check your truck's documentation: The owner's manual or service records might specify the rear axle ratio.
4. Look for a build sheet (if you have one): If you're lucky enough to have a build sheet for your specific truck, it will list the axle ratio.
If you can't find it visually, consider taking your truck to a mechanic or a differential shop. They have experience locating these markings and can determine the gear ratio through other methods if necessary.
