BCBC V3078 Engine Exhaust Valve

Engine Exhaust Valve Overview

Melling V3078 is a standard replacement engine exhaust valve built for stock-style service in select Nissan and Suzuki applications. It uses steel construction, a coated finish, and precision dimensions to support consistent sealing and heat resistance in the valve train.

Key Features

• Steel exhaust valve with a coated finish for added durability.
• Standard replacement grade for stock-style engine service.
• 45-degree seat angle for proper valve seating.
• 1.209 in. valve head diameter and 3.892 in. overall length.
• 6.0 mm stem diameter with a single lock groove.

Detailed Description

The Melling V3078 exhaust valve is engineered for engines that need accurate valve control, dependable heat handling, and stable sealing under repeated combustion cycles. Its steel construction and coated surface help it withstand exhaust-side temperatures, while the specified head diameter, stem diameter, and seat angle support proper fit and function in the valve train. This part number is used in select Nissan Frontier, Nissan Altima, Nissan Sentra, and Suzuki Equator applications, making V3078 a relevant choice when replacing a worn exhaust valve in stock engine service.

This part cross-references Bosch 13078 and DNJ EV638 for the same application.

What It Helps Address

• Burnt or worn exhaust valve sealing surfaces.
• Loss of compression from poor valve seating.
• Heat-related valve wear in the exhaust side of the engine.
• Valve train service needs during cylinder head repair.
• Replacement of a damaged stock-style exhaust valve.

Installation Notes and Tips

Verify valve head diameter, stem diameter, length, and seat angle against the original part before installation. Check guide condition, seat condition, and overall cylinder head wear during service. Professional cylinder head machining and valve adjustment procedures should be followed for proper results.

Quality Assurance

Melling uses precision manufacturing and selected alloy materials to meet demanding exhaust valve specifications. The V3078 is part of the Stock product line and is built for dependable service in OEM and performance-oriented applications.