Product NO.

Product Description

This cylinder head is designed for Renault G9T and G9U series diesel engines, widely used in Renault and Nissan light commercial vehicles.

Manufactured from high-strength aluminum alloy, the cylinder head is produced using precision casting and CNC machining technology to ensure durability, excellent heat resistance and long service life.

It is suitable for 2.2L and 2.5L turbocharged common rail diesel engines, providing stable combustion performance and reliable engine operation.

Product Specification

OEM Reference Number

Common OEM numbers include:

• 7701473359
• 7701474361
• 7701474323
• 8200054356

(OEM numbers may vary depending on vehicle model and production year.)

Applicable Engine

• G9T645
• G9T722
• G9U630
• G9U632
• G9U650
• G9U730

Applicable Vehicles

Renault

• Renault Master
• Renault Mascott
• Renault Trafic

Nissan

• Nissan Interstar

Opel / Vauxhall

• Opel Movano
• Vauxhall Movano

Product Features

• High-strength aluminum alloy casting
• Precision CNC machining
• Excellent heat resistance for turbo diesel engines
• Optimized coolant channel design
• Strict quality inspection before shipment

Installation Notes

To ensure proper installation and long service life, please follow these recommendations:

• Check engine block flatness before installing the cylinder head.
• Always use new cylinder head bolts and a new head gasket.
• Tighten the cylinder head bolts according to the OEM torque sequence and torque specification.
• Clean the cooling system and oil passages before installation.
• Inspect fuel injectors, glow plugs and valves to ensure they are in good condition.
• After installation, check for coolant leakage and proper engine temperature during the first engine start.

Common Problems of G9T / G9U Cylinder Head

For high-mileage engines, the following issues may occur:

1. Cylinder Head Cracking
Due to overheating or coolant loss, cracks may occur between the valve seats or injector areas.

2. Cylinder Head Warping
Engine overheating may cause the cylinder head surface to warp, leading to head gasket failure.

3. Injector Seat Leakage
Poor sealing of injector seats may result in combustion gas leakage.

4. Valve Guide Wear
Long-term use may cause valve guide wear, leading to increased oil consumption.

5. Cooling System Failure
Blocked coolant passages or insufficient coolant circulation may cause engine overheating.

Regular maintenance of the cooling system and proper installation can effectively extend the service life of the cylinder head.

Packaging

• Neutral carton packing
• Foam protection inside carton
• Wooden pallet available for bulk shipment