What is the rear diff ratio of the Hilux LN167?
The rear differential final-drive ratio for the Hilux LN167 is not fixed across all vehicles; it varies by market and trim. Common final-drive values seen on LN167 models include around 4.10:1 and 4.88:1, but the exact ratio must be checked on the specific vehicle.
What the LN167 is and why the ratio matters
The LN167 is a variant of Toyota's Hilux pickup, produced with different engines and configurations for various regions. The rear axle final-drive ratio determines engine RPM at cruising speed, affects acceleration and towing performance, and influences fuel economy. Because Toyota offered multiple gearing options during the LN167’s production, the ratio isn’t universal.
Common ratios you might encounter
Below is a snapshot of typical final-drive values you may encounter on LN167 Hilux trucks. These figures reflect observed ranges rather than a single definitive specification for every LN167 vehicle.
- 4.10:1 — a common final-drive for many LN167 4x4 configurations, balancing on-road comfort with off-road capability.
- 4.88:1 — used on some heavier 4x4 setups or specific market/engine combinations requiring lower rpm at cruising speed.
- 3.90:1 — less common on LN167 4x4s, but can appear on certain 4x2 or earlier variants.
The exact ratio for any given LN167 can differ by market, engine choice, and whether a 4x4 or 4x2 configuration was fitted. Always verify through the vehicle’s documentation or its axle markings.
How to confirm the exact ratio on your Hilux LN167
Before attempting the following measurements, ensure the vehicle is safely supported and that you follow proper safety procedures.
- Check the axle code or sticker on the differential housing or inside the engine bay; the code is often stamped or on a tag with the final-drive ratio.
- Inspect the differential cover for stamped teeth-count hints or model numbers that correspond to a ratio table in Toyota manuals.
- Physically count teeth: remove the diff cover; count the teeth on the ring gear (R) and on the drive pinion (P); divide R by P to obtain the final-drive ratio.
- Refer to the vehicle’s VIN/build sheet or the original equipment specification sheet; Toyota’s service information and dealer databases may list the final-drive ratio for your VIN.
- Consult a dealership or a reputable workshop with access to Toyota’s diagnostic tools or official manuals for confirmation.
Accurate determination often hinges on the axle code or a clean tooth-count, and these numbers may vary by market, engine, and whether a 4x4 or 4x2 differential was fitted.
Why the ratio matters for you
A mismatch between intended use and the final-drive ratio can impact towing performance, fuel economy, and engine wear. If you’re planning modifications such as larger tires or swapping gears, you may need to re-gear or adjust the speedometer calibration to maintain correct readings and performance.
Summary
In short, the LN167’s rear diff ratio is not fixed across all vehicles. Verify the exact figure for your Hilux using axle codes, a gear-tooth count, or your dealership’s documentation. Typical LN167 4x4 final-drives hover around 4.10:1 or 4.88:1, but there are exceptions.
Final takeaway: the ratio varies by market and configuration; confirm with documentation or direct measurement for your specific LN167.
