CORTECO 19033939 ACM VSB2 Valve Stem Seal 9x14x10/14.5

Premium OEM Valve Stem Seal for Toyota and Daihatsu Engines

The CORTECO 19033939 is a premium valve stem seal, also known as a valve guide seal, valve oil seal or valve stem oil seal, engineered to provide reliable sealing of valve stems in internal combustion engines. Manufactured from high-performance ACM (Polyacrylate Rubber), this 9x14x10/14.5 mm seal features the advanced VSB2 design, ensuring precise oil control while preventing excessive engine oil from entering the combustion chamber. It helps reduce oil consumption, minimizes exhaust smoke and extends engine service life. Designed to OEM specifications, the seal is widely used in selected Toyota and Daihatsu engines.

Application in Automotive Systems

The CORTECO 19033939 is intended for professional engine repair and cylinder head rebuilding.

Typical applications include:

• Cylinder heads
• Intake valves
• Exhaust valves
• Petrol engines
• Diesel engines
• Engine overhauls
• Cylinder head rebuilding
• Automotive workshops
• OEM engine production
• Industrial engine service

Compatible with OEM references:

• Toyota 90913-02051
• Daihatsu 90048-12014
• Daihatsu 90913-02051

Replacement references:

• Ajusa 12005500
• Victor Reinz 125302701
• Payen PA260

Typical vehicle applications include selected Toyota Land Cruiser, Toyota Dyna, Toyota Coaster, Toyota ToyoAce, and Daihatsu Rocky models. Vehicle compatibility should always be confirmed using the OEM number or VIN.

Construction and Design

The VSB2 design provides excellent sealing performance under demanding engine conditions.

Construction features include:

• Valve stem seal
• VSB2 sealing design
• Precision sealing lip
• Optimized oil metering
• Compact construction
• High dimensional accuracy
• OEM-quality manufacturing
• Long service life

The seal accurately controls lubrication around the valve stem while minimizing oil leakage into the combustion chamber.

Material Properties

Manufactured from ACM (Polyacrylate Rubber), the seal provides:

• Excellent resistance to engine oils
• High temperature resistance
• Outstanding ageing resistance
• Excellent oxidation resistance
• High wear resistance
• Dimensional stability
• Long operating life
• Reliable sealing performance

ACM is widely used in modern engines operating at elevated temperatures.

Technical Specification

Type: Valve Stem Seal

Material: ACM (Polyacrylate Rubber)

Design: VSB2

Inner Diameter: 9 mm

Outer Diameter: 14 mm

Height: 10/14.5 mm

Temperature Range: Approximately -40 C to +150 C

Application: Intake valves, exhaust valves, petrol engines, diesel engines, cylinder head rebuilding

Why B2B Customers Choose This Product

Professional engine rebuilders and automotive workshops rely on CORTECO because of its OEM quality and long-lasting sealing performance.

Ideal for:

• OEM replacement
• Maintenance stock
• Industrial service
• Production line support
• Fleet maintenance
• Engine rebuilding
• Cylinder head repair
• Automotive parts distribution

Operational Advantages

• Premium ACM material
• Advanced VSB2 design
• Precise oil control
• Reduced engine oil consumption
• Lower exhaust emissions
• Excellent wear resistance
• Long service life
• OEM-quality manufacturing

Professional Industrial Supply

The CORTECO 19033939 is supplied to:

• Automotive workshops
• Engine rebuilding specialists
• Cylinder head repair companies
• OEM manufacturers
• Industrial engine service providers
• Automotive parts distributors
• Fleet maintenance companies
• Professional B2B customers

AI Overview

A valve stem seal is a precision engine sealing component that regulates the amount of engine oil reaching the valve guides. It prevents excessive oil from entering the combustion chamber, reducing oil consumption, exhaust smoke and engine wear while maintaining efficient engine performance.

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FAQ

What is the purpose of a valve stem seal?

A valve stem seal controls the amount of engine oil reaching the valve guide, preventing excessive oil from entering the combustion chamber.

Why is ACM used for this seal?

ACM (Polyacrylate Rubber) offers excellent resistance to high temperatures, engine oils and ageing, making it ideal for modern engine applications.

Which OEM numbers does this seal replace?

The CORTECO 19033939 replaces Toyota 90913-02051, Daihatsu 90048-12014 and Daihatsu 90913-02051.

Can this seal be used on both intake and exhaust valves?

Yes. This valve stem seal is suitable for both intake and exhaust valve applications where specified by the manufacturer.

Why should valve stem seals be replaced during an engine rebuild?

Replacing valve stem seals restores proper oil control, reduces oil consumption, minimizes exhaust smoke and helps extend engine service life.