VOLKSWAGEN 33-113.301.103-E Vw Bug Transaxle

( Manufacturer Part Number: 33-113.301.103-E ), ( Type: Manual Transmission ), ( Housing Material: Magnesium ), ( Country/region Of Manufacture: Germany ), ( Vintage Part: Yes ), ( Performance Part: No )

Review VOLKSWAGEN Vw Bug Type Transaxle fits IRS 1968–1972

Volkswagen Type 1 Transaxle IRS (Independent Rear Suspension) for 1968-1972 Beetles and Other Type 1 Models (33-113.301.103-E)

This is an original equipment manufacturer (OEM) Volkswagen Type 1 Transaxle Independent Rear Suspension (IRS) unit, specifically designed for Volkswagen Beetles and other Type 1 models produced between 1968 and 1972. The transaxle IRS system integrates the engine's power transmission with the rear suspension, offering improved handling, stability, and ride quality.

The 33-113.301.103-E transaxle IRS unit is a crucial component in the car's powertrain and suspension system. It includes the following major components:

1. Transaxle housing: This robust and durable component houses the gearbox, differential, and other essential elements. It is made of high-strength steel to ensure optimal strength and longevity.

2. Gearbox: The gearbox is responsible for transmitting engine power to the wheels. It features multiple gears to provide the necessary torque and RPM range for smooth and efficient operation.

3. Differential: The differential allows the wheels to rotate at different speeds while maintaining power distribution between them. It includes a crown wheel, pinion gear, and other essential components.

4. Independent rear suspension (IRS): The IRS system consists of swing arms, torsion bars, and other components that enable each rear wheel to move independently, providing better handling and stability.

5. Propeller shaft: This component connects the transaxle to the front differential and transmits torque to the wheels. It features a robust design to handle the power and weight of the vehicle.

6. Seals and gaskets: The transaxle IRS unit comes with new seals and gaskets to ensure a proper seal and prevent leaks.

This Volkswagen Type 1 Transaxle IRS (33-113.301.103-E) is a must-have for anyone restoring or upgrading a 1968-1972 Volkswagen Beetle or other Type 1 model. It offers improved performance, handling, and ride quality compared to the outdated swing axle suspension system. With OEM quality and genuine Volkswagen parts, you can trust that this transaxle IRS unit will provide reliable and efficient operation for years to come.

The Volkswagen Type 1 transaxle IRS (Independent Rear Suspension) system, specifically part number 33-113.301.103-E, was introduced for the Volkswagen Beetle in 1968 and continued to be used until 1972. This transaxle provided several advantages over the earlier live axle setup, including improved handling and better weight distribution. However, it also brought some unique challenges and potential drawbacks.

1. Improved handling: The independent rear suspension system allowed for better control of each wheel, resulting in improved handling and stability.

2. Better weight distribution: With the engine and transmission placed over the front axle, the weight distribution was more evenly balanced, contributing to better overall performance.

3. Reduced unsprung weight: The independent suspension setup reduced the amount of weight that was not supported by the springs, allowing for a smoother ride and better response.

4. Enhanced appearance: The IRS system gave the Volkswagen Beetle a more modern and sophisticated look compared to the live axle setup.

1. Complexity: The independent rear suspension system was more complex than the live axle setup, which could lead to more potential issues and higher maintenance costs.

2. Cost: The IRS system was more expensive to produce and install than the live axle setup, making it a more costly option for Volkswagen.

3. Limited aftermarket support: Due to the relatively short production run of the IRS system, there is less aftermarket support available compared to the more common live axle setup.

4. Potential for increased wear: The IRS system places more stress on certain components, such as the CV joints and driveshafts, which could lead to increased wear and potential failure.

The Volkswagen Type 1 transaxle IRS system introduced in 1968 provided several advantages over the earlier live axle setup, including improved handling, better weight distribution, and reduced unsprung weight. However, it also brought some unique challenges and potential drawbacks, such as complexity, cost, limited aftermarket support, and increased wear on certain components. Ultimately, the decision to purchase this transaxle would depend on the individual's priorities, budget, and level of technical expertise.

If you are looking for a Volkswagen Beetle with the IRS system for improved handling and modern looks, be prepared for the potential complexities, higher costs, and increased maintenance requirements that come with it. It may be worth considering a well-maintained example with a thorough service history and a good understanding of the unique challenges of this system. Alternatively, if you prefer a simpler and more cost-effective option, a Volkswagen Beetle with the live axle setup may be a better choice for you.

Details:

VW IRS Transaxle, case number 33-113.301.103-E and serial # AH3810734. I don't know anything about the condition beyond what you can see in photos. My research says this is an 8/1968 to 8/1972 Beetle unit with 4.125 gears, but you should verify for yourself that it fits your application. Outer case is corroded, with surface rust on most visible steel surfaces.

Consider this only a core.

part #: 33113301103 price

• $200.00

specifications complmanu:

• for models: Irs
• for makes: Volkswagen
• for years: 1968-1972
• mpn: 33-113.301.103-e
• type: Manual Transmission
• housing material: Magnesium
• country/region of manufacture: Germany
• vintage part: Yes
• performance part: No

payments complmanu:

• credit card: Discover
• other
• wallet: Google-pay

offer complmanu:

• sold: 0
• quantity: 1
• options: Ship-to-home
• availability: In Stock
• started: September 20, 2025

shipping complmanu:

• class: Standard
• cost: $75.19
• transit: 5-11 Days
• type: Calculated
• service: UPS Ground
• carrier: UPS

returns complmanu:

• policy: No Returns

seller complmanu:

• # reviews: 48
• rating: 100.0%
• city: Chewelah, Washington

general complmanu:

• condition: For parts or not working
• Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission

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