9ESG 6.4L GAS Adjusting Solid Lifters 5038788AA Auto Parts Engine Hydraulic

Designed for 6.4L gasoline engines, this OEM-quality hydraulic valve lifter (Part #5038788AA)ensures smooth valve operation, reduced friction, and extended engine life. Precision-engineered to meet strict specifications, it maintains proper valve timing and reduces wear across the valvetrain.

Key Features & Benefits

✔ OEM-Equivalent Quality – Manufactured to exact specifications (OEM #5038788AA) for perfect fit and function in 6.4L gas engines.

✔ Hydraulic Efficiency – Self-adjusting design maintains zero lash for consistent valve actuation, reducing noise and wear.

✔ High-Temperature Durability – Hardened alloy construction withstands extreme heat and continuous operation without losing performance.

✔ Optimized Oil Flow – Precision-engineered oil channels ensure proper lubrication, preventing premature wear on camshafts and lifters.

✔ Smooth Engine Operation – Reduces valvetrain noise and vibration for quieter performance.

Technical Specifications

• Material: 20Cr

• Compatibility: 6.4L gasoline engines

• Type: Hydraulic roller lifter

• Temperature Resistance: Up to 300°C (572°F)

• Oil Pressure Compatibility: 20-80 PSI

Applications

✔ High-Performance Engines – Ideal for modified or stock 6.4L builds
✔ Daily Drivers – Ensures smooth operation in street applications
✔ Fleet Vehicles – Reduces maintenance frequency in high-mileage engines
✔ Restoration Projects – OEM-quality replacement for classic rebuilds

Why Choose This Valve Lifter?

• Longer Engine Life – Reduces wear on cam lobes and pushrods

• Improved Fuel Efficiency – Maintains optimal valve timing for better combustion

• Quieter Performance – Minimizes valvetrain noise

• Reliable Hydraulic Operation – Self-adjusting for consistent performance

• BUICK 1968 - 1987
• CADILLAC 1982 - 1990
• CHEVROLET 1978 - 1995
• GMC 1963 - 1995
• OLDSMOBILE 1966 - 1987
• PONTIAC 1964 - 1988
• STUDEBAKER 1965 - 1966

   

   

   

   

Ensure smooth valve operation and engine efficiency with this high-quality rocker arm, designed for DAEWOO CIELO G15, CHEVROLET, GENERAL MOTORS (GM), and VAUXHALL engines. Manufactured to exact OEM specifications (90409194, 90403194, 90398840), this critical valve train component guarantees precise motion transfer from the camshaft to the valves, optimizing engine performance and longevity.

Key Features & Benefits

✔ OEM-Quality Precision Fit

• Direct replacement for original part numbers 90409194, 90403194, 90398840, ensuring perfect compatibility with G15 engines and related GM models.

• Precision-machined for smooth operation, reducing friction and wear on valve tips and pushrods.

✔ Durable Construction for Longevity

• Made from high-strength alloy steel or hardened metal (depending on application) to withstand repetitive stress and high RPMs.

• Heat-treated for enhanced durability, preventing deformation under extreme engine temperatures.

✔ Improved Engine Performance

• Ensures accurate valve timing, maintaining optimal air-fuel mixture and combustion efficiency.

• Reduces valve train noise and minimizes power loss due to improper valve lift.

✔ Easy Installation & Reliability

• Drop-in replacement for worn or damaged rocker arms, simplifying engine repairs and maintenance.

• Works seamlessly with stock valve train components, eliminating compatibility issues.

Ideal Applications

This rocker arm is essential for:

• Engine rebuilds or top-end overhauls in DAEWOO CIELO, CHEVROLET, GM, and VAUXHALLvehicles.

• Preventive maintenance to avoid valve train failure and costly engine damage.

• Performance tuning where consistent valve actuation is critical.

Why Choose This Rocker Arm?

A failing rocker arm can lead to misfires, reduced power, and valve damage. This OEM-grade replacement ensures smooth valve operation, extended engine life, and reliable performance in daily driving or demanding conditions. Whether restoring an older engine or maintaining a daily driver, this rocker arm delivers factory-matched quality for lasting dependability.

With over 30 years of expertise in automotive parts export, we specialize in manufacturing high-precision, high-performance components for global markets. Our products meet stringent quality standards and are trusted by clients worldwide.

• Equipped with advanced testing machinery for material analysis and heat treatment verification.
• Dedicated engineering and QC teams ensure every product meets your exact specifications and performance requirements.

• Custom solutions available based on your samples or technical drawings.
• Trial orders (small quantities accepted) to facilitate smooth collaboration and build long-term partnerships.