The Toyota W56 is a 5-speed fully synchronized manual transmission built by Aisin Seiki and used in the Toyota Hilux Pickup (sold as the Toyota Pickup in North America) and Toyota 4Runner from 1985 through 1995. It is a member of Toyota's W-series transmission family, all-aluminum case units that share basic architecture across the W-series lineup.
The W56 is distinguished from the W55 passenger car transmission by its lower 1st and 2nd gear ratios designed to give a loaded truck more pulling power from a stop. The 4WD variant uses an even lower 1st gear ratio (3.954:1) than the 2WD variant (3.285:1) to support the heavier 4WD drivetrain and off-road duty cycles.
The W56 has a devoted following in the Toyota truck and 4WD community for its durability, simplicity, and ease of service. Clean used W56 units are increasingly sought after as the 1985 to 1995 Pickup and 4Runner population ages, making a gear-tested, variant-documented unit a significant find for any restoration or repair project.
The W56 has six distinct gear ratio sets depending on 2WD vs 4WD configuration:
| Gear | 4WD Ratio | 2WD Ratio |
|---|---|---|
| 1st Gear | 3.954:1 | 3.285:1 |
| 2nd Gear | 2.141:1 | 1.894:1 |
| 3rd Gear | 1.384:1 | 1.275:1 |
| 4th Gear | 1.000:1 (direct) | 1.000:1 (direct) |
| 5th Gear | 0.850:1 (overdrive) | 0.850:1 (overdrive) |
| Reverse | 4.091:1 (approx, varies by generation) | 4.091:1 (approx, varies by generation) |
The 4WD W56 uses lower (numerically higher) 1st and 2nd gear ratios to handle the extra weight and lower-speed off-road duty cycles. The 2WD W56 uses slightly higher (numerically lower) 1st and 2nd ratios for better highway driveability and fuel economy in unloaded street driving. 4th gear is direct (1.000:1) and 5th gear is overdrive (0.850:1) on both configurations.
Marlin Czajkowski of Marlin Crawler Inc. identified 5 major design generations in the 4WD W56 production run:
| Generation | Years | Key Notes |
|---|---|---|
| W56-A | 1985 only | First year W56. Some unique internal components specific to 1985. Least common. |
| W56-B | 1986 to 1988 | Second generation. Some synchronizer and shift fork changes from W56-A. |
| W56-C | 1989 to 1991 | Third generation. Refined synchronizer assemblies. Most common generation in US market. |
| W56-D | 1992 only | One-year-only variant with specific internal changes. Relatively rare. |
| W56-E | 1993 to 1995 | Final generation. Most refined version. Compatible with most W56-C components. |
| Item | Details |
|---|---|
| INCLUDED | Complete transmission assembly with all internal gears, synchronizers, shift forks, shift rails. 4WD versions include transfer case input adapter. Output yoke or rear case end as applicable. |
| NOT INCLUDED | Clutch disc, pressure plate, throwout bearing, flywheel, transfer case (4WD applications), transmission fluid, shift lever assembly. |
| Fluid Note | Drain before shipping. Refill with Toyota T-IV ATF or full synthetic GL-4 75W-90 gear oil. Confirm recommendation for your specific application year in the factory service manual. |
| Core Note | No core charge. You are not required to return your old transmission. |
The Toyota W56 was factory installed in the following vehicles:
| Vehicle | Compatibility |
|---|---|
| Toyota Pickup (Hilux), 2WD | 1985 to 1995, with 22R-E 4-cylinder engine |
| Toyota Pickup (Hilux), 4WD | 1985 to 1995, with 22R-E 4-cylinder engine (paired with transfer case) |
| Toyota 4Runner, 2WD | 1985 to 1995 |
| Toyota 4Runner, 4WD | 1985 to 1995 (paired with transfer case) |
| Swap Applications | Popular into Jeep, Samurai, custom off-road builds, and non-Toyota applications via adapter plates |
The W56 is a popular swap candidate in the off-road community due to its compact dimensions, aluminum case, and Toyota's reputation for durability. The bellhousing bolt pattern is common to Toyota's W-series family and compatible with various adapter plates for non-Toyota engine applications. Call (240) 301-0095 with your chassis and engine combination and we will advise on swap requirements.
Transmission compatibility: 22R-E 4-cylinder engine, standard factory pairing. Works with 3VZE V6 in some applications with correct bell housing. 4WD versions pair with RF1A or similar Toyota transfer case.
Mileage varies by unit. Where available from the donor vehicle we provide it. Where it cannot be confirmed, we disclose this before your order is placed.
| Transmission Type | fully synchronized | 5 speed manual |
|---|---|
| Manufacturer | Aisin Seiki (for Toyota) |
| Transmission Family | Toyota W-series |
| 1st Gear 4wd | 3.954:1 |
| 1st Gear 2wd | 3.285:1 |
| 2nd Gear 4wd | 2.141:1 |
| 2nd Gear 2wd | 1.894:1 |
| 3rd Gear 4wd | 1.384:1 |
| 3rd Gear 2wd | 1.275:1 |
| 4th Gear | 1.000:1 (direct | both applications) |
| 5th Gear | 0.850:1 (overdrive | both applications) |
| Case Material | Aluminum alloy |
| Variants | W56-A (1985) through W56-E (1993 to 1995) | Marlin Crawler system |
| Production Years | 1985 to 1995 |
| Applications | Toyota Pickup (Hilux) and Toyota 4Runner | both 2WD and 4WD |
| Fluid | Toyota T-IV ATF or GL-4 75W-90 | confirm with factory service manual |
| Price | $1 | 949.00 |
Needed a W56 4WD for my 4Runner. Vaz confirmed it was a W56-C (1989 to 1991 generation) and the 4WD rear case configuration before I paid. All 5 gears engage cleanly- 5th stays in without hunting. The Marlin classification confirmation told me these guys actually know Toyota truck transmissions.
Replaced the W56 in my 2WD pickup. Vaz confirmed the 2WD rear case before ordering- which is the main thing to get right. Gear tested all 5 forward gears and reverse. One output seal was seeping- disclosed before I bought. Fixed with a $12 seal at install. Truck shifts cleanly.
To make a claim, contact us within 15 days of delivery at (240) 301-0095 or info@vazautosolutions.com.
