KYB 343039 Shock Absorber - Rear

KYB Excel-G Rear Shock Absorber 343039

KYB Excel-G 343039 is a rear suspension shock absorber built to restore original ride control, stability, braking response, and handling. It is a nitrogen gas-charged, twin-tube design made on KYB OE assembly lines with OE-quality components for import car applications.

The Excel-G line is KYB’s Original Equipment for the Aftermarket offering, focused on returning the vehicle to its designed damping characteristics rather than changing ride feel. This makes KYB Excel-G 343039 a practical replacement choice for Toyota Cressida, Toyota Celica, Toyota Corona, Toyota Corolla, and Isuzu Impulse rear suspension service.

Key Features

• OE-style replacement shock absorber for import cars
• Nitrogen gas-charged, twin-tube construction
• Triple-lip fluid seal helps reduce oil and gas leakage
• Vehicle-specific, hand-assembled damping valves manage tire contact, steering response, and body movement
• Strong strut body and bracket design helps minimize flex and maintain alignment
• Dust cover included
• B-stop and R-stop included in the design
• Compressed length: 11.54 in; extended length: 18.82 in; stroke length: 7.28 in
• Lower mount type: E1; upper mount type: S1

Detailed Description

KYB Excel-G 343039 is engineered for rear suspension applications where restoring factory damping matters. It is designed to return the original control characteristics of the vehicle, helping maintain predictable body motion, stable lane changes, and consistent tire contact. For drivers servicing a Toyota Corolla rear shock absorber or a Toyota Celica rear suspension shock absorber, this part supports the vehicle’s original ride behavior without altering the intended setup.

This part cross-references Monroe Shocks & Struts 5818 for the same application. KYB Excel-G 343039 also cross-references Gabriel 81416 for the same application.

What It Helps Address

• Excessive bouncing after bumps
• Loose or unstable rear-end handling
• Longer stopping distances caused by worn damping
• Poor tire contact over uneven pavement
• Reduced steering and lane-change response from worn rear suspension control

Installation Notes and Fitment

• Fits 1983-1989 Isuzu Impulse, rear; replace suspension strut and coil spring assembly according to manufacturer instructions.
• Fits 1978-1987 Toyota Cressida, rear; recommended OEM replacement; except electronically-adjustable suspension.
• Fits 1983-1985 Toyota Celica, rear; recommended OEM replacement; with solid rear axle.
• Fits 1978-1985 Toyota Celica, rear; replace suspension strut and coil spring assembly according to manufacturer instructions.
• Fits 1979-1982 Toyota Corona, rear; replace suspension strut and coil spring assembly according to manufacturer instructions.
• Fits 1975-1979 Toyota Corolla, rear; replace suspension strut and coil spring assembly according to manufacturer instructions.

Verify mount style, compressed and extended length, and rear suspension configuration before installation. On applications that require it, follow the vehicle manufacturer’s instructions for strut and coil spring assembly service.

Quality Assurance

KYB is a major OE shock and strut supplier, and the Excel-G line is produced on the same assembly lines used for OE-style components. The design uses OE-quality parts and application-specific damping calibration to restore original performance characteristics for the listed Toyota and Isuzu rear suspension applications.