HONDA PNN1-2 Transmission PNN1/2 K20Z3

( Manufacturer Part Number: PNN1/2 ), ( Type: Manual Transmission ), ( Oe/oem Part Number: Oem ), ( Housing Material: Aluminum ), ( Items Included: Bearing, Shift Fork, Ring, Shift Shaft, Spring ), ( Universal Fitment: No ), ( Performance Part: Yes )

Review HONDA Pnn1/2 Transmission fits CIVIC SI 2006–2011

The Honda PNN1/2 transmission, also known as the K20Z3 transmission, is a six-speed manual transmission specifically designed for the 2006-2011 Honda Civic SI. This transmission is a key component of the vehicle's powertrain system, responsible for transferring power from the engine to the drivetrain and ultimately to the wheels.

The K20Z3 transmission features a compact and robust design, with a low overall weight to help improve fuel efficiency and handling. It utilizes a helical limited-slip differential, which provides improved traction and stability during cornering and acceleration. This differential is particularly beneficial for drivers who enjoy enthusiastic driving or live in areas with adverse road conditions.

The gearing in the K20Z3 transmission is carefully calibrated to provide optimal performance and responsiveness. The first five gears have relatively short ratios, which provide quick acceleration and lively engine response. The sixth gear, on the other hand, is longer, allowing for efficient cruising at highway speeds. The transmission also includes a rev-matching feature, which can be activated using the paddle shifters on the steering wheel, making downshifts smoother and more precise.

The Honda PNN1/2 transmission is built to high standards of durability and reliability. It includes a number of features designed to prolong its life and reduce the need for maintenance. For example, it uses a double-cone synchronizer in the first gear to help reduce wear during engaging the clutch. It also includes a torque converter clutch and a wet clutch design, which help to reduce heat buildup and wear on the clutch components.

Maintaining the Honda PNN1/2 transmission involves regular oil changes and inspections. The transmission oil should be changed every 30,000 to 60,000 miles, depending on driving conditions and personal preference. It is also recommended to have the transmission inspected during routine maintenance checks to ensure that all components are functioning properly and that there are no leaks or other issues.

In summary, the Honda PNN1/2 K20Z3 transmission is a high-performance, reliable, and durable component of the Honda Civic SI's powertrain system. Its compact design, helical limited-slip differential, and carefully calibrated gearing make it an ideal choice for drivers who value responsiveness, handling, and efficiency. Proper maintenance and care will help ensure that this transmission continues to perform at its best for many miles to come.

Buying a Honda PNN1/2 K20Z3 transmission for a 2006-2011 Civic SI can be a significant investment for car enthusiasts and mechanics. Here are some potential pros and cons to consider before making a purchase.

1. Reliability: Honda transmissions are known for their durability and reliability. The K20Z3 transmission, in particular, is a popular choice among enthusiasts for its strength and ability to handle high power output.

2. Wide Availability: The K20Z3 transmission is a common transmission used in various Honda models, making it widely available on the aftermarket. This can lead to more competitive pricing and various options for buyers.

3. Performance: The K20Z3 transmission is known for its quick shifts and smooth operation, making it a popular choice for those seeking better performance from their Civic SI.

4. Cost-Effective: Compared to other high-performance transmissions, the K20Z3 can be a more cost-effective option for those looking to upgrade their car's powertrain.

1. Complexity: The K20Z3 transmission is a complex piece of machinery, and installing it can be a challenging task for those without experience. It may require specialized tools and knowledge to ensure proper installation and operation.

2. Wear and Tear: Even with its reputation for durability, the K20Z3 transmission can still wear out over time, especially if it is subjected to high power output or aggressive driving. This can lead to expensive repairs or replacement costs.

3. Compatibility: While the K20Z3 transmission is widely used in various Honda models, it may not be compatible with all Civic SI models, especially those with significant modifications or unique features.

4. Potential for Clutch Slip: Some users have reported issues with clutch slip in the K20Z3 transmission, which can result in poor performance and potentially damage the transmission.

The Honda PNN1/2 K20Z3 transmission can be a great investment for those seeking improved performance and reliability from their Civic SI. However, it is important to consider the potential challenges and costs associated with its installation and maintenance. Prospective buyers should ensure they have the necessary knowledge and resources to install the transmission properly and maintain it to prevent premature wear and tear. Additionally, those with unique or heavily modified Civic SI models may need to consider alternative transmission options.

1. Research the transmission thoroughly to understand its capabilities, limitations, and potential issues.

2. Consult with a reputable Honda mechanic or transmission specialist to assess the compatibility of the transmission with your specific Civic SI model.

3. Ensure you have the necessary tools and knowledge to install the transmission properly.

4. Consider purchasing a rebuilt or used transmission to save costs while still maintaining reliability.

5. Regularly maintain the transmission to prevent wear and tear and ensure optimal performance.

Details:

Transmission rebuilt with M factory differential, synchrony tech carbon fiber synchronizes 1-4 GEARS, new sliders 1-4, national bearing kit, including needle bearing, all seals are replaced, no chips or cracks on any of the gear I expect them thoroughly. Casing is not pretty from the outside, but I clean it as best can, inside beast can handle up to 700hp no BS. You are being known on a 2007 Honda Civic SI K20z3.

part #: pnn12 prices

• $2299.99-$4999.99

specifications complmanu:

• for models: Si, Civic
• for makes: Honda
• for years: 2006-2011
• mpn: Pnn1/2
• type: Manual Transmission
• oe/oem part number: Oem
• housing material: Aluminum
• items included: Bearing, Shift Fork, Ring, Shift Shaft, Spring
• universal fitment: No
• performance part: Yes

shipping complmanu:

• transit: 12-20 Days
• carrier: FedEx
• type: Fixed
• service: FedEx Ground / FedEx Home Delivery
• cost: $0.00
• class: Standard

seller complmanu:

• rating: 100.0%
• # reviews: 19
• city: Kissimmee, Florida

payments complmanu:

• wallet: Google-pay
• other
• credit card: Diners-club

offer complmanu:

• started: June 6, 2026
• availability: In Stock
• sold: 0
• quantity: 1
• options: Ship-to-home

returns complmanu:

• policy: No Returns

general complmanu:

• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission
• condition: Remanufactured

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