Porsche Part Number 901 347 241 01 Bearing: Identification, Applications, and Replacement Guide

If you're working on a classic Porsche and have come across part number 901 347 241 01, you're likely dealing with a critical bearing that plays a role in the vehicle's drivetrain or suspension. This specific bearing is a genuine Porsche component, and understanding its purpose, fitment, and replacement can save you time and money. This guide covers everything you need to know about the 901.347.241.01 bearing, including which models use it, how to recognize failure, and where to source a replacement.

What is Porsche Part Number 901 347 241 01?

Part number 901 347 241 01 refers to a needle roller bearing. Needle bearings are designed to handle high radial loads while occupying minimal space, making them common in transmissions, differentials, and suspension components. The "901" prefix typically indicates the part was originally designed for the Porsche 911 and 912 models from the 1960s through the early 1970s. This particular bearing often serves as a support for a shaft or spindle in the suspension or steering system. It is a sealed or shielded bearing in many applications, though the exact configuration can vary. The dimensions are approximately 22mm inner diameter, 35mm outer diameter, and 12mm width, but always verify with your specific vehicle.

Applications and Compatibility

Porsche Models That Use This Bearing

The 901.347.241.01 bearing is most commonly found in early Porsche 911 (1964–1973) and 912 models. It may also appear in the Porsche 356, especially later versions that shared components with the 911. Key applications include:

• Front suspension lower control arm pivot – In many early 911 models, this bearing acts as the pivot point for the lower control arm, allowing smooth articulation.
• Rear suspension trailing arm pivot – Similar role in the rear, where it accommodates movement of the trailing arm.
• Steering column support – In some instances, the bearing supports the steering shaft inside the steering column.
• Throttle linkage or pedal assembly – Less common, but it can be used in pedal pivot points.

Always consult your vehicle’s parts catalog (such as Porsche PET) or a reliable aftermarket guide to confirm exact fitment. Cross-referencing with your car’s VIN or model year is recommended before ordering.

OEM vs Aftermarket Options

Genuine Porsche bearings are manufactured to high tolerances and typically made of hardened steel with proper sealing to resist dirt and moisture. Aftermarket alternatives from brands like SKF, INA, or FAG are often identical in quality, as they supply OEM parts. If you choose an aftermarket bearing, ensure it matches the exact dimensions and load rating. Look for a reputable supplier that specializes in European automotive bearings.

Signs of a Failing Bearing

A worn or damaged 901.347.241.01 bearing can cause several symptoms:

• Noise – A grinding, rumbling, or clicking sound from the suspension or steering area, especially when turning or driving over bumps.
• Vibration – Excessive vibration felt through the steering wheel or chassis.
• Play or looseness – Excessive movement in the control arm or steering linkage when inspected by hand.
• Uneven tire wear – Misalignment caused by a worn bearing can lead to cupping or feathering on the tires.
• Poor handling – The vehicle may wander, feel unstable, or have a vague steering response.

If you notice any of these issues, inspect the bearing immediately. Continued driving with a failed bearing can cause further damage to surrounding components, such as the control arm or steering rack.

Replacement Considerations

Tools and Parts Needed

Replacing the 901.347.241.01 bearing requires basic mechanic tools: jack stands, a socket set, a press or bearing driver kit, and possibly a puller. You will also need the new bearing, along with any related hardware like bolts, washers, or circlips. Some applications may require removing the control arm or other components to access the bearing.

Difficulty Level

The difficulty varies by application. Suspension pivot bearings are generally moderate to replace for a DIY mechanic with experience. If the bearing is pressed into a housing, you’ll need a press or appropriate bearing driver. Improper installation can damage the new bearing, so take care to apply force only to the outer race or use a proper installation tool. If you are unfamiliar with suspension work, consider having a professional perform the replacement.

Tips for a Successful Replacement

• Clean the housing thoroughly – Before installing the new bearing, remove any old grease, rust, or debris from the bore.
• Apply anti-seize or grease – Use a thin layer of grease on the outer surface of the bearing (if recommended) and on the shaft or housing to ease installation and prevent corrosion.
• Check alignment – Ensure the bearing is seated straight into the housing. Tapping it in at an angle can deform the cage or rollers.
• Torque to spec – After installation, tighten any retaining bolts to the manufacturer’s specified torque. Overtightening can distort the bearing.
• Inspect other components – While you have the area apart, check bushings, ball joints, and seals for wear. It’s often wise to replace them at the same time.

Where to Find the Bearing

Genuine Porsche parts are available through authorized dealers and Porsche Classic centers. However, for a bearing that may have been discontinued or is expensive, aftermarket options are widely available. Specialized Porsche parts retailers and online stores that focus on European automotive bearings stock this bearing. Look for suppliers that clearly list dimensions and OEM cross-references. Avoid generic bearings that may not meet the required load capacity. Verify part number compatibility with your specific Porsche model and year.

Final Recommendation

For most classic Porsche owners, the 901.347.241.01 bearing is a reliable part that can last decades if properly maintained. When it’s time to replace it, choose either a genuine Porsche bearing or a high-quality aftermarket bearing from a trusted manufacturer like SKF, INA, or FAG. The aftermarket options typically cost less while offering equal durability. Always match the exact specifications and use proper installation techniques. If you are not confident in your mechanical skills, have the replacement done by a shop that specializes in vintage Porsches. Keeping this bearing in good condition is essential for safe handling and a smooth driving experience.