Vehicle Compatibility

Compatible with:

Lexus GS

• 1998–2005 Lexus GS300
• 1998–2000 Lexus GS400
• 1998–2005 Lexus GS430

Lexus IS

• 2001–2005 Lexus IS300

Lexus SC

• 2002–2010 Lexus SC430

Always verify your vehicle’s suspension configuration and OEM part numbers before ordering.

OEM Replacement Part Numbers

This kit replaces the following OEM part numbers:

• 48190-30040
• 4819030040

These bolts are designed as direct replacements for factory rear suspension alignment hardware.

Restore Proper Rear Alignment

Over time, factory eccentric bolts can seize due to corrosion or wear, making proper alignment difficult or impossible.

Replacing worn alignment bolts allows technicians to:

• Restore factory adjustment capability
• Correct rear camber
• Correct rear toe
• Improve suspension geometry
• Achieve accurate wheel alignment

Proper alignment is critical after replacing suspension components or lowering a vehicle.

Improve Handling & Tire Wear

Accurate rear suspension alignment offers several benefits.

Potential improvements include:

• Better straight-line stability
• Reduced steering pull
• Improved cornering balance
• Reduced uneven tire wear
• Increased driving confidence

Although the bolts themselves do not increase suspension performance, they allow proper alignment settings that help the suspension perform as intended.

Durable Steel Construction

The eccentric bolts are manufactured from heavy-duty steel designed for long-term reliability.

Construction highlights include:

• High-strength steel
• Corrosion-resistant finish
• Precision-machined eccentric design
• OEM-style dimensions
• Long service life

These materials help the bolts withstand repeated alignment adjustments and harsh road conditions.

Installation

The eccentric bolts replace the factory alignment hardware in the rear suspension.

Typical installation includes:

1. Raise and safely support the vehicle.
2. Remove the existing eccentric adjustment bolts.
3. Install the new eccentric bolts.
4. Adjust rear suspension alignment.
5. Torque hardware to factory specifications.
6. Complete a professional four-wheel alignment.

Professional installation and alignment are recommended.

Benefits After Installation

Replacing worn alignment bolts can help:

• Restore factory adjustment capability
• Improve rear suspension alignment
• Reduce abnormal tire wear
• Improve vehicle stability
• Make future alignment service easier

Pros

• Direct OEM-style replacement
• Fits multiple Lexus GS, IS300, and SC430 models
• Restores rear alignment adjustment
• High-strength steel construction
• Corrosion-resistant finish
• Easy replacement during suspension service
• Ideal for replacing seized or worn factory hardware
• Helps achieve accurate wheel alignment

Cons

• Limited adjustment range compared to adjustable control arms
• Professional alignment required after installation
• Not intended to correct extreme camber caused by aggressive lowering
• Sold as a 2-piece kit only

Final Verdict

The 2-Piece Eccentric Alignment Camber Bolt Kit is a practical and cost-effective replacement for worn factory alignment hardware on the 1998–2005 Lexus GS300, GS400, GS430, 2001–2005 Lexus IS300, and 2002–2010 Lexus SC430. By restoring rear camber and toe adjustment capability, these OEM-style eccentric bolts help technicians achieve proper wheel alignment, improving handling, tire wear, and overall driving stability.

For stock-height vehicles or mildly lowered Lexus models, replacing seized or damaged eccentric bolts is often all that’s needed to restore factory alignment. However, enthusiasts running aggressive suspension setups may benefit from pairing these bolts with adjustable camber or toe arms for a wider adjustment range.