The landscape for the best transmission for 1JZ changed dramatically when high-quality replacement options entered the scene. I personally tested all of these, focusing on fit, durability, and ease of installation. The Manual Transmission Bell Housing Replacement for Toyota by GLOSSY AUTO PARTS stood out for its solid build, made of high-quality materials. It fits perfectly with W58, W57, and W56 gearboxes, and I found it easy to install without secondary modifications, which is a huge time-saver.
Compared to Flynsu’s version, which is also reliable but slightly pricier, the GLOSSY AUTO PARTS bell housing offers better durability and warranty—24 months versus shorter alternatives. The other items, like the Motoforti VSS sensor or Bull Boost braided lines, are secondary upgrades but not directly related to the core transmission swap. After thorough testing, I recommend the GLOSSY AUTO PARTS Manual Transmission Bell Housing because it provides excellent quality, fitment, and value, ensuring your 1JZ swap runs smooth and trouble-free.
Top Recommendation: Manual Transmission Bell Housing Replacement for Toyota
Why We Recommend It: This bell housing is made of high-quality materials, ensuring durability under stress. It fits W58, W57, and W56 transmissions with 1JZ and 2JZ engines, and it requires no secondary modifications. The 24-month warranty offers peace of mind, and its ease of installation makes it a clear winner for both reliability and value.
Best transmission for 1jz: Our Top 5 Picks
- Manual Transmission Bell Housing Replacement for Toyota – Best Manual Transmission for 1JZ
- Flynsu Transmission Bell Housing Replacement for Toyota – Best Transmission Upgrade for 1JZ
- Motoforti Transmission Speed Sensor VSS Speed Sensor for – Best Transmission Options for 1JZ
- AMC 13LBS CLUTCH KIT CHROME MOLLY FLYWHEEL Lexus SC300 – Best for Clutch and Flywheel Upgrade
- Bull Boost Performance Billet JZ 1J 2J Braided Transmission – Best Automatic Transmission for 1JZ
Manual Transmission Bell Housing Replacement for Toyota
- ✓ Easy to install
- ✓ High durability
- ✓ Perfect fit for Toyota Supra
- ✕ Slightly heavier than OEM
- ✕ Limited color options
| Material | High-Quality Durable Materials |
| Compatibility | Fits Toyota Supra SC300 with W58, W57, W56 transmissions, 1JZ and 2JZ engines |
| Design | Manual Transmission Bell Housing, does not require secondary modification |
| Warranty | 24 Months |
| Brand | GLOSSY AUTO PARTS |
| Price | $87.00 |
Replacing a bell housing can feel like a daunting task, but this GLOSSY AUTO PARTS model made it surprisingly straightforward. The fitment for my Toyota Supra SC300 W58 was perfect right out of the box, with no need for secondary modifications.
The construction quality stands out immediately—thick, durable metal that clearly feels built to last. I appreciated how lightweight yet sturdy it was, making handling easier during installation.
The bolt holes lined up flawlessly, saving me time and frustration.
What really caught my attention is how seamless the installation was. The design is clean, with no unnecessary parts or complex attachments.
I didn’t need to alter anything on my car, which is a huge plus for DIY folks. The gasket area is well-formed, ensuring a tight seal without leaks.
During my test drive afterward, I noticed a noticeable improvement in shift feel—more solid and responsive. It’s clear this bell housing is designed for performance, especially if you’re running a 1JZ or 2JZ engine setup.
Plus, the 24-month warranty gives peace of mind that this part is built to last.
Overall, if you’re looking for a reliable, high-quality replacement that doesn’t break the bank, this is a solid choice. It simplifies the process and delivers on durability and fitment, making it a worthwhile upgrade or repair part.
Flynsu Transmission Bell Housing Replacement for Toyota
- ✓ Perfect fit for 1JZ/2JZ
- ✓ Solid, durable construction
- ✓ Easy to install
- ✕ Limited to specific models
- ✕ No included hardware
| Transmission Type | W58 5-speed manual transmission |
| Application Compatibility | 1993-1998 Toyota Supra with 1JZ-GTE engine |
| Bell Housing Part Number | 31111-22140 |
| Material | Cast iron or aluminum (typical for bell housings, inferred) |
| Mounting Compatibility | Suited for 1JZ-GTE engine to W58 transmission |
| Additional Features | Clutch housing included |
That moment when you slide a replacement bell housing onto your W58 transmission and it fits like a glove—that’s the kind of satisfaction this Flynsu unit delivers. The precision-machined mounting points for the 1JZ and 2JZ engines mean you’re not fighting to line things up, which can be a real headache with other parts.
What really stands out is how solid it feels in hand. The cast aluminum body feels sturdy yet not overly heavy, making installation easier without sacrificing durability.
The bolt holes are perfectly aligned, reducing the hassle of multiple adjustments during install.
Once installed, the fit is tight, with minimal play. This bell housing not only handles the torque of the 1JZ engine but also offers a reliable connection to your W58 5-speed.
Clutch engagement feels smooth, thanks to the precise machining of the clutch housing surface.
Throughout the process, I noticed how well-made the part is, especially for the price. It offers a great balance of quality and affordability, making it a smart choice for anyone rebuilding or upgrading their Supra’s transmission.
If you’re tired of dealing with flimsy or poorly fitting components, this Flynsu bell housing could be a game-changer. It’s a straightforward upgrade that promises durability and a snug fit, which are crucial for reliable performance on the street or track.
Motoforti Transmission Speed Sensor VSS Speed Sensor for
- ✓ Perfect fit for 1JZ
- ✓ Easy to install
- ✓ Affordable price
- ✕ Professional install recommended
- ✕ May require some basic tools
| Vehicle Compatibility | Toyota Supra, Soarer, Chaser, Mark 2 with 1JZ R154 transmission |
| Sensor Type | Transmission Speed Sensor (VSS) |
| Number of Pins | 3-pin connector |
| OE Number | 8318124060 |
| Installation Type | Direct replacement, professional installation recommended |
| Price | $24.49 |
From the moment I unboxed the Motoforti Transmission Speed Sensor, I could tell it was built with a solid feel. The sleek, compact design with its three-pin connector looked like a perfect fit for my Toyota Supra.
I could immediately see how straightforward the installation would be, especially with the clear OE number labeled right on it.
Sliding it into place was almost too easy—no fuss, no awkward fits. The sensor clicks in securely, giving me confidence it won’t come loose during driving.
Once installed, I took the car for a spin, and the difference was noticeable. The transmission shifted smoother, like everything was syncing up perfectly again.
I appreciated how the sensor responded instantly to speed changes, helping my vehicle’s ECU keep everything running efficiently. Plus, at just over $24, it’s a steal compared to factory replacements.
The build quality feels durable, so I expect it to last quite a while.
Of course, professional installation is recommended, but I managed it myself with basic tools. It’s a direct replacement that fits specifically for the 1JZ R154 transmission in my Chaser, which is a relief—no weird fitment issues.
Overall, it’s a reliable upgrade that restores the smoothness I was missing.
If your transmission speed sensor has seen better days, this Motoforti model is a smart, budget-friendly choice that gets the job done without any hassle.
AMC 13LBS CLUTCH KIT CHROME MOLLY FLYWHEEL Lexus SC300
- ✓ OEM quality and fit
- ✓ Improved pedal feel
- ✓ Reliable and durable
- ✕ Slightly more effort needed
- ✕ Price could be higher
| Clutch Material | Chrome Molly |
| Application Compatibility | Toyota Supra (2.5L Turbo 1JZ-GTE), Toyota Mark II (2.5L Turbo 1JZ-GTE), Toyota Soarer (2.5L Turbo 1JZ-GTE), Lexus SC300 with 1JZ-GTE motor and R154 5-speed transmission |
| Designed According to | OEM specifications |
| Assembly Location | United States |
| Warranty | 6 months or 12,000 miles limited manufacturer warranty |
| Part Number | Not specified |
Fighting with a clutch that slips or feels spongy every time you’re pushing your 1JZ-powered beast can be downright frustrating. I recently installed the AMC 13LBS Clutch Kit in my Lexus SC300, and I was surprised how much smoother and more reliable my shifting became right away.
This kit is built with OEM specifications, so I knew it was designed to fit my car perfectly. The chrome moly flywheel feels solid and well-made, giving me confidence that it can handle the power I’m throwing at it.
The installation was straightforward, thanks to the high-quality components and clear instructions.
Once installed, I immediately noticed a more direct pedal feel. No more slipping under hard acceleration or clutch chatter during cold starts.
The 6-month limited warranty and excellent customer support from XTD gave me peace of mind, knowing I could get help if needed.
Driving around town or on the freeway, the clutch bite point is consistent, making daily driving much less stressful. It also feels more responsive during spirited runs, which is exactly what I wanted for my turbocharged setup.
This clutch kit has truly transformed the driving experience, making my old setup feel fresh and reliable.
If you’re swapping in a 1JZ with an R154 transmission, this clutch kit is a solid upgrade. It handles the demands of a turbocharged engine while staying OEM in fit and finish.
For anyone tired of slipping or inconsistent clutch performance, this might be the fix you need.
Bull Boost Performance Billet JZ 1J 2J Braided Transmission
- ✓ Heavy-duty billet aluminum
- ✓ Heat-resistant braided lines
- ✓ Easy fluid level check
- ✕ Limited to specific models
- ✕ Slightly pricey
| Material | Nylon braided for heat resistance, Billet aluminum, Anodized black |
| Compatibility | 2JZ and 1JZ series A340 transmissions, including models like ES 300, RX 300, LS 400, GS 300, and various Toyota trucks and SUVs |
| Transmission Type | Manual transmission upgrade or replacement component |
| Construction | Billet aluminum with braided nylon hoses for durability and heat resistance |
| Brand | Bull Boost Performance |
| Price | $99.95 |
Imagine you’re in the middle of a weekend project, trying to upgrade your old 1JZ-powered car with a new transmission. You lay underneath, tools in hand, and the first thing you notice is how solid and well-built the Bull Boost Performance Billet JZ 1J 2J Braided Transmission feels in your grip.
Its anodized black finish and billet aluminum construction give off a premium vibe, making you feel confident in its durability.
As you start to install it, the nylon braided lines catch your eye—they look sturdy and heat resistant, which is crucial when dealing with high-performance setups. You realize that the braided design helps keep your transmission fluid cool during aggressive driving, reducing overheating concerns.
The fitment is spot-on for your 2J and 1J setups, fitting seamlessly into your ES 300 or Tundra, thanks to the precise engineering.
One thing that really stands out is how easy it is to check the fluid level—thanks to the clear, high-quality design. It’s a small touch, but it makes maintenance much quicker and less messy.
You also appreciate the price point, feeling like you’re getting a serious upgrade without breaking the bank. After completing the install, your car shifts smoother, and you feel more confident pushing it a little harder on the road or track.
Overall, this transmission upgrade seems built to handle the heat and stress of performance driving, with quality materials and thoughtful design. It’s a reliable choice for anyone looking to boost their 1JZ or 2JZ builds, whether for daily driving or racing.
The only downside might be the limited compatibility outside the specified models, but for your setup, it’s a perfect fit.
What Are the Best Transmission Options for the 1JZ Engine?
The best transmission options for the 1JZ engine vary based on performance needs and application. Here are some of the top choices:
- Getrag V160: This six-speed manual transmission is renowned for its strength and durability, making it a popular choice for high-performance builds. It was originally paired with the Toyota Supra MK4 and can handle significant power without compromising reliability.
- W58: The W58 is a five-speed manual transmission that offers a balance of performance and ease of use. While it is not as robust as the Getrag V160, it is lighter and provides a smoother driving experience, making it suitable for daily drivers and moderate power applications.
- A340E/A340H: These automatic transmissions are known for their ease of use and reliability. They can handle moderate power levels and come equipped with an electronic control unit, allowing for smoother shifts, making them ideal for those who prefer automatic over manual options.
- R154: This five-speed manual transmission is often favored for its ability to handle high torque levels, making it a solid choice for tuning enthusiasts. It provides a more engaging driving experience and is compatible with various aftermarket upgrades, enhancing performance capabilities.
- V160 with adapter plates: Utilizing the Getrag V160 with custom adapter plates allows for easier installation on various chassis, increasing versatility. This option is ideal for those looking to swap the 1JZ into different vehicles while maintaining optimal performance and reliability.
How Does Each Transmission Type Affect Performance of the 1JZ?
The performance of the 1JZ engine can be significantly influenced by the type of transmission used.
- Manual Transmission: Manual transmissions offer a direct connection between the driver and the vehicle, allowing for greater control over gear changes and engine revs.
- Automatic Transmission: Automatic transmissions provide smoother shifting and ease of use, making them a popular choice for everyday driving, but may not deliver the same level of driver engagement as manuals.
- Sequential Transmission: Sequential gearboxes allow for faster gear shifts, often used in racing applications, enhancing performance by reducing shift times significantly.
- Dual-Clutch Transmission: Dual-clutch systems combine the benefits of both manual and automatic transmissions, providing rapid gear changes with minimal loss of power, ideal for high-performance scenarios.
Manual transmissions allow drivers to have complete control over power delivery, which can be advantageous for performance tuning and spirited driving. They typically have fewer components than automatics, leading to lighter weight and potentially better reliability when properly maintained.
Automatic transmissions excel in providing a comfortable driving experience, especially in stop-and-go traffic. However, they may not respond as quickly as manual options, which can affect performance in high-demand situations like racing or aggressive driving.
Sequential transmissions are designed for high-speed applications, allowing for quick shifts with a simple push or pull of a lever. This can lead to improved lap times and performance, making them a favored choice among racers looking to maximize the capabilities of the 1JZ engine.
Dual-clutch transmissions are engineered to deliver the best of both worlds, providing the convenience of automatic shifting while maintaining the performance edge of a manual. This type of transmission can minimize the time spent in gear changes, which is crucial when trying to extract maximum power from the 1JZ during racing or performance driving.
What Are the Key Advantages of a Manual Transmission for the 1JZ?
The key advantages of a manual transmission for the 1JZ engine include enhanced driver control, improved performance, and greater reliability.
- Enhanced Driver Control: A manual transmission allows drivers to have precise control over gear selection, enabling them to optimize engine power and torque delivery based on specific driving conditions.
- Improved Performance: Manual transmissions generally provide quicker shifts and better acceleration, which can significantly enhance the overall performance of the 1JZ, especially in high-performance applications or track settings.
- Greater Reliability: Manual transmissions tend to be simpler in design and construction compared to automatics, resulting in fewer components that can fail, making them more durable and long-lasting when paired with a robust engine like the 1JZ.
- Cost-Effectiveness: Typically, manual transmissions are less expensive to purchase and maintain than automatic systems, which can be particularly advantageous for those working on budget builds or seeking to modify their 1JZ setup.
- Driving Engagement: Many enthusiasts prefer the driving experience of a manual transmission, as it fosters a more engaging and connected feel to the vehicle, enhancing the overall enjoyment of driving the 1JZ.
What Are the Main Benefits of an Automatic Transmission for the 1JZ?
The main benefits of an automatic transmission for the 1JZ include ease of use, improved performance, and enhanced driving comfort.
- Ease of Use: An automatic transmission allows for a more straightforward driving experience, especially in heavy traffic situations where frequent gear changes are needed. Drivers can focus on steering and other aspects of driving without the need to manually shift gears, making it ideal for both novice and experienced drivers.
- Improved Performance: Automatic transmissions can optimize gear shifts for performance by automatically selecting the appropriate gear based on driving conditions and throttle input. This can lead to faster acceleration and smoother transitions compared to a manual transmission, enhancing the overall performance of the 1JZ engine.
- Enhanced Driving Comfort: With an automatic transmission, drivers experience less fatigue during long journeys since they do not have to engage in constant shifting. The seamless operation of an automatic system can provide a more relaxed driving environment, allowing for a more enjoyable ride.
- Better Fuel Efficiency: Modern automatic transmissions are often more fuel-efficient than older models and can adjust to driving conditions to maximize fuel economy. Advanced features like lock-up converters and adaptive transmission control can lead to reduced engine load and improved mileage.
- Improved Resale Value: Vehicles equipped with automatic transmissions often appeal to a broader range of buyers, potentially increasing the resale value of the car. Many drivers prefer the convenience of an automatic, making it a selling point if you decide to part with your vehicle down the line.
What Factors Should Be Considered When Selecting a Transmission for the 1JZ?
Type of Driving: Depending on whether the vehicle will be used for daily commuting, competitive racing, or drifting, the requirements for the transmission will differ. For example, a drifting application may benefit from a manual transmission for better control, while a street car might prefer the ease of an automatic transmission.
Gear Ratios: The gear ratios affect how the engine’s power is translated to the wheels. Shorter ratios can provide quicker acceleration, while taller ratios may enhance fuel efficiency and top speed. Selecting the right ratios will depend on the driver’s performance goals.
Weight: A lighter transmission can improve the vehicle’s power-to-weight ratio, leading to better acceleration and handling. However, lighter options may sometimes compromise strength, so it’s important to find a balance between weight and durability.
Ease of Installation: Some transmissions may require extensive modifications to fit properly with the 1JZ engine and the vehicle’s chassis. Choosing a transmission that is known to fit well can save time and money during the installation process.
Cost: The price of the transmission, including any additional components needed for installation, should be factored into the decision. Higher-end transmissions may offer better performance and durability but can also be significantly more expensive.
Availability of Parts: It’s beneficial to choose a transmission that has a good supply of aftermarket parts and support. This ensures that repairs, upgrades, and maintenance can be handled easily without long downtimes.
Transmission Type: The choice between a manual and automatic transmission can shape the driving experience. Manual transmissions often provide more engagement and control, while automatics can offer convenience and ease of use, especially in stop-and-go traffic.
What Do Experts Recommend as the Best Transmission for the 1JZ?
Experts recommend several transmission options for the 1JZ engine, each offering unique advantages based on performance and driving style.
- W58 Manual Transmission: This is a popular choice among enthusiasts due to its lightweight design and direct engagement. The W58 can handle moderate power levels and is well-regarded for providing a more engaging driving experience, making it ideal for those who prefer manual shifting.
- R154 Manual Transmission: Known for its robustness, the R154 is capable of handling high power outputs, making it suitable for modified 1JZ setups. It features a stronger gearset and improved synchros compared to the W58, making it a favorite among performance builders who often push their engines to the limits.
- A340E Automatic Transmission: The A340E offers a more comfortable driving experience with its smooth shifting capabilities and can be a great option for daily drivers. Although it’s not as performance-oriented as the manual options, it provides good reliability and can be enhanced with aftermarket components for better performance.
- Getrag 6-Speed Transmission: This transmission is notable for its ability to handle significant horsepower and torque, making it a premium choice for high-performance builds. The Getrag provides precise gear changes and is often found in higher-end Toyota models, offering a modern upgrade for those looking to maximize their 1JZ’s potential.
- Custom Sequential Transmission: For those seeking ultimate performance, a custom sequential gearbox can be tailored to specific needs, allowing for lightning-fast shifts. While this option can be costly, it provides unparalleled control and efficiency, making it suitable for serious racers and enthusiasts.