Overview
✓ OEM Refurbished — Single Part
About This Engine Cylinder Head — No Secondary Air
This genuine OEM engine cylinder head restores your Land Rover's engine performance, designed for Discovery (including Discovery Series II), Range Rover (including Range Rover Classic), and Defender 90 models equipped with 3.9L, 4.0L, 4.2L, and 4.6L V8 gasoline engines without a secondary air system.
Part #LDF001020, supersedes ERR4323, ERR4324, LDF108080, LDF108090, and LDF108110. Manufactured to meet strict factory standards, providing durable construction and optimal sealing for improved combustion efficiency.
Key Features
What's Included & Features
Every part is inspected before it leaves our facility.
Here's what you get with this listing:
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Genuine OEM Replacement Part — precise fit and reliability.
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Part Number: LDF001020 — supersedes ERR4323, ERR4324, LDF108080, LDF108090, LDF108110.
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Without Secondary Air System — confirm your engine configuration before ordering.
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Broad Engine Coverage — fits 3.9L, 4.0L, 4.2L, and 4.6L V8 gasoline engines.
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Direct OEM Replacement — matches factory fit and finish. No modification required.
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OEM Used & Refurbished — Inspected — professionally reconditioned and quality-checked before shipping.
Specifications
Part Specifications
| Part # | LDF001020 / 306-58679 |
| Replaces | ERR4323, ERR4324, LDF108080, LDF108090, LDF108110 |
| Part Type | Engine Cylinder Head — Without Secondary Air System |
| Compatible Models | Land Rover Discovery / Discovery Series II, Range Rover / Range Rover Classic, Defender 90, 1994-2002 (3.9L, 4.0L, 4.2L & 4.6L V8 Gas) |
| Part Condition | OEM Used & Refurbished — Inspected |
Fitment
Vehicle Fitment
| Year | Make | Model | Trim | Engine |
| Defender 90 | ||||
| 1994-1995 | Land Rover | Defender 90 | Base, NAS, Station Wagon | 3.9L V8 Gas |
| 1997 | Land Rover | Defender 90 | Base, Limited Edition (LE), Station Wagon | 4.0L V8 Gas |
| Discovery | ||||
| 1994-1995 | Land Rover | Discovery | Base | 3.9L V8 Gas |
| 1996-1999 | Land Rover | Discovery | SD, SE, SE7, XD, LSE, Callaway, LE | 4.0L V8 Gas |
| 1999-2002 | Land Rover | Discovery Series II |
Base, S, SE, SD, LE | 4.0L V8 Gas |
| Range Rover | ||||
| 1994-1995 | Land Rover | Range Rover | Classic County, Classic County LWB, Classic LSE | 3.9L V8 Gas, 4.2L V8 Gas |
| 1995-2002 | Land Rover | Range Rover | SE, S, HSE, Vitesse, County, 30th Anniversary, Kensington, Holland & Holland, Autobiography | 4.0L V8 Gas, 4.6L V8 Gas |
⚠ Always verify part number LDF001020 matches your original unit before purchasing. Call us if unsure — (877) 443-9246.