Electronic Throttle Body 4H23-9F991-BC Land Rover Range Rover AKAS

The AKAS Electronic Throttle Body is a precision drive-by-wire throttle valve assembly replacement for Land Rover vehicles equipped with Jaguar Ford AJ44 4.4L V8 Naturally Aspirated Petrol engines (2005-2009), replacing Land Rover OE 4H23-9F991-BC (cross-ref 4H239F991BC, 4H239F991BD, LR006142, THB-61015, 1077-133238).

PETROL ONLY. This electronic throttle body controls the amount of air entering the engine based on accelerator pedal position and ECU commands, featuring an integrated throttle position sensor (TPS) and DC motor for precise, linear throttle response. Direct-fit installation with identical mounting points and electrical connector to the original factory Land Rover part - no modification, adapter, or machining required. High-strength aluminium alloy housing with anti-foul coated valve plate and FKM fluoroelastomer seals ensures long service life. Backed by a 6-month limited warranty.

1. Electronic Throttle Body - Precise Drive-by-Wire Control This is an electronic throttle body (drive-by-wire) with integrated throttle position sensor (TPS) and DC motor, precisely controlling air intake based on accelerator pedal position and ECU commands for linear, smooth throttle response with zero lag or hesitation. Resolves common faults including rough idling, fluctuating idle speeds, hard starts, reduced power, and unexpected stalling - clearing P0120/P0121/P0122/P0123/P0220/P0221/P0222/P0223/P2119 throttle position sensor fault codes. Replaces Land Rover OE 4H23-9F991-BC (cross-ref 4H239F991BC, 4H239F991BD, LR006142).

2. Exact OE Match - AJ44 4.4L V8 Petrol Only Precision direct-fit electronic throttle body for Land Rover Range Rover L322 (2006-2009) 4.4 V8, Range Rover Sport L320 (2006-2009) 4.4 V8, and Discovery 3 / LR3 (2005-2009) 4.4 V8 with Jaguar Ford AJ44 4.4L V8 Naturally Aspirated Petrol engines. 1:1 OE dimensions, OE connector, identical mounting points - no modification, adapter, or machining required. PETROL ONLY - not compatible with 4.2L V8 Supercharged, 3.6L TDV8 Diesel, 2.7L TDV6 Diesel, 3.0L TDV6 Diesel, or other engine variants. Verify original OE number before purchase.

3. Direct-Fit Installation - Save Time & Labour Identical form, fitment, and dimensions to the original factory Land Rover throttle body - no grinding, modification, or machining required. Installs directly onto your intake manifold with ease, using existing mounting bolts and electrical connector. Pre-calibrated at the factory to OE specifications - however, an OBD scan tool may be required to clear fault codes or perform throttle adaptation (OBD relearn / idle air volume learning) after installation on certain vehicle models with factory ECU programming protections.

4. Premium Materials & Precision Engineering - Built to Last High-strength aluminium alloy housing with excellent corrosion and heat resistance prevents warping and air leaks even under sustained high-temperature operation. The valve plate features a durable non-stick anti-foul coating that repels carbon deposits and oil residue, significantly reducing the need for frequent cleaning. Fitted with high-temperature fluoroelastomer (FKM) gaskets that resist oil vapour degradation, preventing ageing, oil seepage, and air leaks over extended use. Meticulously calibrated valve clearances eliminate issues such as incomplete closure, binding during operation, and sluggish return.

5. OE Quality at Aftermarket Value - 6-Month Warranty Manufactured to strict Land Rover OE specifications with dependable electronic precision, rapid signal feedback, solid high-heat tolerance, and anti-vibration capability - performing comparably to the genuine Land Rover throttle body (4H23-9F991-BC / LR006142) at a fraction of Land Rover main dealer cost. Backed by a 6-month limited warranty covering manufacturing defects. For South African Land Rover owners - where Range Rover/Range Rover Sport/Discovery 3 remain popular luxury SUVs and AJ44 4.4L V8 throttle body failure is a common cause of rough idling, reduced power, and failed emissions/roadworthy tests.

Product Specifications

Product Type: Electronic Throttle Body / Throttle Valve Assembly (Drive-by-Wire)

Other Names: Fuel Injection Throttle Body, Throttle Body and Motor Assembly

Sensor: Integrated Throttle Position Sensor (TPS)

Actuation: Electronic (DC Motor + Integrated TPS)

Manufacturer Cross-Reference: Land Rover 4H239F991BC, 4H239F991BD, LR006142, THB-61015, 1077-133238

Housing Material: High-Strength Aluminium Alloy (Corrosion & Heat Resistant)

Valve Plate: Anti-Foul Non-Stick Coated (Carbon & Oil Resistant)

Seals: High-Temperature Fluoroelastomer (FKM) Gaskets

Mounting: Direct-Fit (Identical OE Mounting Points, No Modification Required)

Calibration: Pre-Calibrated to OE Specifications (OBD Adaptation May Be Required)

Primary OE: 4H23-9F991-BC

Compatible Models - PETROL ONLY

Land Rover:

- Range Rover L322 4.4 V8 (2006-2009)

- Range Rover Sport L320 4.4 V8 (2006-2009)

- Discovery 3 / LR3 4.4 V8 (2005-2009)

Note: Verify original OE number and engine code before purchase.

Engine Compatibility

Engine Family: Jaguar Ford AJ44 4.4L V8 Naturally Aspirated

Displacement: 4.4L (4394cc) V8 Petrol

Configuration: V8 32-Valve DOHC Naturally Aspirated

Power: 220-225kW (300HP)

Torque: 425-440Nm

Fuel: Petrol Only (Naturally Aspirated)

NOT compatible with: 4.2L V8 Supercharged Petrol

NOT compatible with: 3.6L TDV8 Diesel

NOT compatible with: 2.7L TDV6 Diesel

NOT compatible with: 3.0L TDV6 Diesel

Note: Verify original OE number and engine code before purchase.

OE Cross-Reference

Primary OE: 4H23-9F991-BC

Cross-Reference: 4H239F991BC, 4H239F991BD, LR006142, THB-61015, 1077-133238

Note: Verify original OE number, engine code, and connector type before purchase.

PETROL ONLY - VERIFY COMPATIBILITY: This electronic throttle body fits Land Rover Range Rover L322/Range Rover Sport L320/Discovery 3/LR3 with Jaguar Ford AJ44 4.4L V8 Naturally Aspirated Petrol engines (2005-2009), replacing Land Rover OE 4H23-9F991-BC. PETROL ONLY - not compatible with 4.2L V8 Supercharged, 3.6L TDV8 Diesel, 2.7L TDV6 Diesel, 3.0L TDV6 Diesel, or other engine variants. Verify original OE number, engine code, and connector type before purchase.

VERIFY OE NUMBER: Before making the purchase, please make sure that the OE number is correct. If the OE numbers do not match, they cannot be used together. This throttle body replaces Land Rover OE 4H23-9F991-BC (cross-ref 4H239F991BC, 4H239F991BD, LR006142). Do NOT substitute with a different OE number throttle body (e.g. LR024970 for later 5.0L V8, LR019250 for 3.0L V6 Diesel, 4H23-9F991-AD for 4.2L Supercharged) - they have different calibrations, connector types, and bore diameters and are NOT interchangeable.

OBD ADAPTATION / IDLE AIR VOLUME LEARNING MAY BE REQUIRED: Due to factory ECU programming protections on certain Land Rover vehicle models, an OBD scan tool may be required to clear fault codes or perform throttle adaptation (OBD relearn / idle air volume learning) after installation to ensure proper operation. This is a function of the vehicle's original software, not a product defect. Please confirm whether your vehicle requires OBD adaptation before placing your order. If OBD adaptation is required, an OBD tool must be purchased separately.

PROFESSIONAL INSTALLATION: Recommended for proper torque on mounting bolts, correct intake manifold gasket seating, and clearing of diagnostic trouble codes (DTCs) / throttle adaptation after replacement. Allow engine to cool completely before servicing. Ensure the intake manifold mating surface is clean and free of old gasket material, carbon deposits, and oil residue before installation. Do not over-tighten mounting bolts.

WARRANTY: 6-month limited warranty covering manufacturing defects under normal use. Does not cover improper installation, drops, contamination, water ingress, use on incompatible vehicles/engines (4.2L Supercharged/3.6L TDV8/2.7L TDV6/3.0L TDV6/other variants), wrong OE number, modification, or normal wear. This is an aftermarket replacement part - not affiliated with or manufactured by Jaguar Land Rover, Land Rover, or Ford.

What's in the box
1 x Throttle Body