TRW Engine 331143 Engine Exhaust Valve

TRW Engine Exhaust Valve 331143 Overview

TRW Engine part number 331143 is an engine exhaust valve built for specific Volkswagen applications. It features a 96.9 mm overall length, a 31.6 mm valve head diameter, a 7 mm valve stem diameter, and a 45° valve seat angle for precise valvetrain service.

Compatible with select Volkswagen Jetta, Beetle, Golf, and Passat models, this exhaust valve is a direct-fit service part for engines that require the listed dimensions and seat geometry. The bi-metal valve seat material and hardened valve stem tip support consistent operation in exhaust-valve service.

Key Features

• TRW Engine exhaust valve, part number 331143
• 96.9 mm length for specified Volkswagen engine applications
• 31.6 mm valve head diameter and 7 mm stem diameter
• 45° valve seat angle for proper sealing geometry
• Bi-metal valve seat material
• Valve stem tip hardened for added wear resistance at the contact point

Detailed Description

TRW Engine 331143 is an exhaust valve for engine valve train repair where the original valve dimensions and seat angle must match exactly. It is listed for 1993-2006 Volkswagen Jetta, 1998-2005 Volkswagen Beetle, 1996-2004 Volkswagen Golf, and 1996-1997 Volkswagen Passat. For buyers searching for a Volkswagen Jetta exhaust valve 331143 or a Volkswagen Golf exhaust valve replacement, this part number provides the key dimensional details needed for accurate selection.

This part cross-references 028 109 611G and V94085 for the same application.

What It Helps Address

• Exhaust valve wear from high-temperature combustion exposure
• Loss of sealing at the valve seat
• Valve stem tip wear at the contact point
• Dimensional mismatch during cylinder head repair
• Service replacement needs for Volkswagen engine valvetrain work

Installation Notes and Tips

Verify valve head diameter, stem diameter, overall length, and 45° seat angle against the original component before installation. Confirm cylinder head and seat condition, and inspect the mating surfaces for wear or damage that could affect sealing. This valve is intended for engines specified by the listed fitment data, including Volkswagen Jetta, Beetle, Golf, and Passat applications.

Quality Assurance

TRW Engine supplies valvetrain components with attention to OE-style dimensional accuracy and material selection. Part number 331143 is specified with a hardened valve stem tip and bi-metal seat material to support consistent exhaust-valve service in the listed Volkswagen applications.