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Need a Transmission for your 2013 Toyota Highlander? Car Parts Finder USA searches thousands of sellers to find the best transmission at the lowest prices with guaranteed fitment.

At 13 years old, your 2013 Toyota Highlander is at the age where transmission replacement becomes common. Aftermarket and quality used parts offer excellent value — often 50-70% less than OEM with comparable reliability.
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Browse Suspension & BrakesThe transmission transfers power from the engine to the wheels, allowing your vehicle to change speeds and reverse direction. It contains a complex system of gears, clutches, and hydraulics (automatic) or gears and synchros (manual). Transmission failure can make your vehicle undriveable and is one of the most expensive repairs. A quality used transmission offers significant savings over rebuilt or new units.
Transmission replacement is a major job requiring professional equipment in most cases. The process involves: lifting and supporting the vehicle, removing exhaust and drivetrain components, disconnecting transmission cooler lines and electrical connectors, supporting and removing the transmission (often 150-400 lbs), installing the replacement unit with proper torque specifications, and programming/adapting the new unit to the vehicle's computer. Used transmissions must be an exact match for your vehicle's engine, drivetrain, and model year.
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For transmission replacement, used OEM is strongly recommended. Transmissions are complex, precisely-engineered assemblies that must work flawlessly with your vehicle's engine and computer systems. 'Aftermarket' transmissions are typically remanufactured units with varying quality. A used OEM transmission from a reputable seller with verified low mileage offers proven reliability at 50-70% savings. Transmissions have thousands of internal parts - buying a known-reliable OEM design reduces the risk of compatibility issues or premature failure.
Connects the engine to automatic transmission. Often replaced with transmission to prevent repeat failure.
Rubber mounts wear out and should be replaced during transmission swap for a solid installation.
Fresh fluid is essential after installation. Use manufacturer-specified type only.
Should be replaced when installing a used transmission if accessible without removing the pan.
For manual transmissions, replace the clutch during transmission removal - it's accessible and wear item.
Connects transmission to engine. Inspect for damage and resurface (manual) or check for cracks (automatic).
Transmission replacement typically costs $2,000-$5,000 for most vehicles, with luxury and performance vehicles running $5,000-$10,000+. This breaks down to: used transmission ($400-$1,800), labor (6-12 hours at $75-$150/hour = $450-$1,800), transmission fluid ($50-$150), and miscellaneous parts ($100-$300). Factors affecting cost include vehicle type (FWD vs RWD vs AWD), transmission availability, labor rates, and whether additional parts like torque converter are needed. A quality used transmission offers 50-70% savings over rebuilt units.
Signs of transmission failure include: slipping (engine revs but car doesn't accelerate), delayed engagement (pause before moving when shifted into drive/reverse), harsh or jerky shifts, grinding or clunking sounds during shifts, transmission fluid leaks (red or brown fluid under the car), burning smell, won't shift into certain gears, warning lights, and shuddering during acceleration. Some symptoms can be addressed with fluid changes or minor repairs, while others indicate major failure requiring replacement. Get a professional diagnosis before committing to replacement.
Consider repair if: the problem is minor (solenoid, sensor, or external seal), labor cost for repair is significantly less than replacement, or you have a rare transmission that's hard to find used. Consider replacement if: internal damage is extensive, multiple components have failed, the transmission is high-mileage with worn internals, repair quotes approach replacement cost, or you want a fresh unit with a warranty. A full transmission rebuild costs $2,500-$5,000 - often more than a quality used replacement. Get quotes for both options to compare.
Guidelines for used transmissions: under 80,000 miles is ideal; 80,000-120,000 miles is acceptable with proper documentation; 120,000-150,000 miles requires careful evaluation; and over 150,000 miles is generally avoided unless from a known-reliable design. Automatic transmissions typically wear faster than manuals. More important than mileage: was transmission fluid changed regularly? What was the failure reason on the donor vehicle? Were there any known issues with that transmission model? A 130,000-mile transmission with regular fluid changes may outperform a 60,000-mile neglected unit.
Warranties vary by seller: salvage yards typically offer 30-90 day warranties; online used transmission sellers often provide 60-90 day standard warranties with extended options (6-12 months available); remanufactured transmissions may include 1-3 year warranties. Warranty coverage varies - some cover parts only, others include labor. Premium sellers may offer 'unlimited mileage' coverage for a set time period. Read warranty terms carefully, keep all documentation, and understand the claim process before you need it.
DIY transmission replacement is extremely challenging but possible for experienced mechanics. Requirements: transmission jack (essential), full set of sockets and wrenches, vehicle-specific service manual, safe workspace with lift or tall jack stands, 2-4 weekends of time, and experience with heavy mechanical work. Challenges: transmissions weigh 150-400 lbs, many fasteners are difficult to access, precise torque specifications are critical, and fluid fills/programming may require special equipment. Many DIYers do it successfully, but have professional backup available for unexpected issues.
Before purchasing, verify: documented mileage from donor vehicle; reason the donor was salvaged (accident is better than transmission failure); fluid condition (no burnt smell or metal particles); external condition (no cracks, damage, or major leaks); completeness (does it include torque converter, TCM, harness?); compatibility with your vehicle (VIN-specific is best); seller's reputation and history; warranty terms and return policy; and any known issues with that transmission model. Request photos of the actual unit, not stock images.
Programming requirements vary by vehicle: many older vehicles (pre-2005) work with a straight swap - just install and go. Newer vehicles may require: TCM (Transmission Control Module) programming if the module is replaced, adaptation procedures to learn shift patterns (many do this automatically during initial driving), torque converter clutch relearn, and clearing of adaptive memory from the old transmission. Some vehicles require dealer-level scan tools for programming. Ask the seller and your installer about specific requirements for your vehicle.