KYB 551119 Suspension Strut - Front

KYB Gas-a-Just Front Strut for Toyota Tundra

KYB Gas-a-Just 551119 is a front suspension strut built as an OE-style monotube replacement for Toyota Tundra applications. It is engineered to restore control, steering response, and ride consistency on trucks that work, tow, or run larger tires and wheels.

The Gas-a-Just line uses a high-pressure monotube design with separate gas and oil chambers for quick response and fade-resistant operation. For Toyota Tundra owners looking for a direct front strut solution, KYB 551119 is built around the demands of heavier-duty use.

Key Features

• Fits 2000-2006 Toyota Tundra, front, including TRD Package applications
• Fits 2004-2006 Toyota Tundra, front, for strut and coil spring assembly replacement per manufacturer instructions
• Adds up to 25% more damping performance over original equipment shocks
• Monotube construction separates gas and oil for consistent response
• Higher gas pressure improves steering response and control
• Triple chrome plated piston rod helps reduce seal wear
• Dust cover included
• Lower mount type: E2(14X39.5); upper mount type: S1(12MM)

Detailed Description

KYB 551119 is designed for Toyota Tundra front suspension service where OE ride quality and added damping are both important. The Gas-a-Just platform uses an air-free hydraulic working area for responsiveness, plus a separate high-pressure nitrogen chamber with a floating piston to maintain comfort during normal driving and deliver firmer control when load or road conditions increase. This makes it a practical choice for a Toyota Tundra front strut replacement on trucks used for towing, hauling, or fitted with heavier wheels and tires.

This part cross-references Monroe Shocks & Struts 71347 for the same application. KYB Gas-a-Just 551119 also aligns with Toyota OE references 48510A9280, 48510A9290, 48510A9300, and 48510A9310.

What It Helps Address

• Excessive front-end bounce or float
• Reduced steering response on rough roads
• Loss of damping control under towing or load
• Shock fade during repeated suspension movement
• Seal wear related to fluid leakage

Installation Notes and Tips

For 2004-2006 Toyota Tundra front applications, replace the suspension strut and coil spring assembly according to the manufacturer’s instructions. KYB recommends new strut mounts, part number SM5442, to reduce the chance of noise and vibration. Verify mount dimensions and vehicle configuration before installation, and confirm the front position matches the application.

Quality Assurance

KYB designs Gas-a-Just struts as OE monotube replacements for vehicles that need restored suspension control and consistent performance. Part number 551119 is built with a triple chrome plated piston rod and monotube valving intended to support fade-free operation in demanding Toyota Tundra front suspension use.