Range Sport L405 Engine Exhaust Manifold Right O/S 4.4 SDV8 Diesel AH4Q-9430-CA

The Range Sport L405 Engine Exhaust Manifold Right 4.4 Diesel AH4Q-9430-CA is an original exhaust system component designed for 4.4 Diesel engines in Land Rover vehicles. It ensures proper exhaust gas evacuation from the right side of the engine, stable engine operation, and correct conditions for the turbocharger and subsequent exhaust components.

Specifications and technical data

• SKU: LR022722
• Mark: Land Rover
• Condition: Used
• OEM Part Number: LR022722
• Substitutable numbers: LR022722, AH4Q-9430-CA, AH4Q9430CA
• Location on the vehicle: Right
• Fuel type: Diesel
• Part type: Exhaust Manifold
• Category: Manifolds & Headers

Purpose and Function of the Exhaust Manifold

The exhaust manifold in the 4.4 Diesel engine is responsible for collecting exhaust gases from individual cylinders and directing them to the rest of the system. The right side of the engine operates at high temperatures and under significant load, making the use of a proper, factory manifold crucial for:

• maintaining correct exhaust gas flow and minimizing pressure loss,
• stable turbocharger operation and proper boost control,
• reducing thermal stress on the cylinder head and gaskets,
• preserving the factory power and torque parameters of the diesel engine.

Selecting the correct right-side manifold is particularly important in modern diesel engines, where the exhaust system works in conjunction with an advanced turbocharging and exhaust gas aftertreatment system.

Compatibility with 4.4 Diesel Engine

The presented component is specifically designed for 4.4 compression-ignition engines, meaning it has tailored channel geometry, appropriate port diameters, and correct mounting points to the cylinder head and the rest of the exhaust system. This ensures:

• correct fitment with the right-side cylinder head of the engine,
• maintaining seal integrity at high diesel operating temperatures,
• minimizing the risk of leaks that could cause power loss or engine control unit errors.

The exhaust system in a diesel engine is sensitive to any changes in flow, so using a dedicated right-side manifold helps maintain the factory operating characteristics of the 4.4 unit.

Installation and Operational Characteristics

The right-side placement on the vehicle facilitates component identification during parts selection and service planning. The manifold is designed for direct replacement, utilizing original mounting points and manufacturer-specified sealing solutions.

• Dedicated Geometry – tailored to the engine bay and exhaust routing in the Range Rover Sport / L405.
• Stable High-Temperature Operation – construction adapted to the typical loads of diesel engines.
• Direct Replacement Capability – the manifold is intended to replace a worn or damaged part without vehicle modifications.

This solution helps reduce repair time, lower the costs of additional modifications, and maintain the exhaust system in its original manufacturer configuration.

Why Choose a Used Land Rover Exhaust Manifold

An original exhaust manifold from a Land Rover vehicle is a sensible choice for users who want to control costs while maintaining factory specifications. Compared to aftermarket alternatives with uncertain geometry, a component from the same model family:

• maintains proper exhaust gas flow parameters, which is important for the turbocharger and exhaust system filters,
• ensures correct fitment with the cylinder head and 4.4 Diesel engine ancillaries,
• reduces the risk of installation problems, such as interference with other components or the need for modifications.

This is a practical solution for workshops specializing in the brand and for users who expect predictable repair outcomes and the preservation of the engine's operating characteristics.

More Information on Exhaust Manifolds and Performance Systems

If you want to better understand the impact of the manifold on exhaust system performance and durability, and compare different solutions used in premium vehicles, check out our guide: Performance Exhaust Systems and Used Sport Manifolds. You'll find practical tips on selecting and operating exhaust components in modern cars.

Other Land Rover Exhaust Manifolds

If you are also looking for other Land Rover exhaust manifolds for different engine versions or models, explore our dedicated category: Land Rover Exhaust Manifolds. This will allow you to easily compare available solutions and select the right component for your specific vehicle configuration.