LR121793 | Timing Chain - 3.0L AJ20P6 Petrol PHEV | Range Rover, Discovery, Defender
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To check the stock of Genuine Parts before placing an order please use our Contact Us page
Land Rover Part Number: LR121793 - Timing Chain
LR121793 is a timing chain fitted within the timing gear of 3.0L AJ20P6 petrol engines (including petrol and petrol PHEV variants). It synchronises crankshaft and camshaft rotation to ensure correct valve timing. The chain runs over toothed sprockets and works alongside guides and tensioning components inside the timing cover to maintain camshaft phasing; wear, elongation or damage can alter valve timing and may affect idle quality, combustion and emissions. Use the compatibility data below to confirm fitment against your V.I.N.
Compatibility
- Discovery 5 (2017 onwards) - 3.0L AJ20P6 Petrol High (From VIN L2000001)
- New Defender (2020 onwards) - 3.0L AJ20P6 Petrol High (From VIN L2000001)
- New Range Rover Sport (2023 onwards) - 3.0L AJ20P6 Petrol High; 3.0L AJ20P6 Petrol PHEV
- Range Rover (2013-2022) - 3.0L AJ20P6 Petrol High (From VIN KA000001)
- Range Rover Sport (2014-2022) - 3.0L AJ20P6 Petrol High (From VIN KA000001)
- Range Rover Velar (2017 onwards) - 3.0L AJ20P6 Petrol High (From VIN MA000001)
Frequently Asked Questions
The LR121793 timing chain transfers rotary motion from the crankshaft to the camshaft sprockets on 3.0L AJ20P6 petrol engines, working with guides and tensioners inside the timing cover to maintain correct camshaft phasing. Wear, elongation or damage to the chain can change valve timing and is commonly identified by rough idle, misfires or increased emissions; inspect the timing system if these symptoms occur and follow manufacturer guidance for repairs.
| Model | Variant |
|---|---|
| Land Rover Discovery 5 (2017 onwards) | 3.0L AJ20P6 Petrol High (From VIN L2000001) |
| Land Rover New Defender (2020 onwards) | 3.0L AJ20P6 Petrol High (From VIN L2000001) |
| Land Rover New Range Rover Sport (2023 onwards) | 3.0L AJ20P6 Petrol High; 3.0L AJ20P6 Petrol PHEV |
| Land Rover Range Rover (2013-2022) | 3.0L AJ20P6 Petrol High (From VIN KA000001) |
| Land Rover Range Rover Sport (2014-2022) | 3.0L AJ20P6 Petrol High (From VIN KA000001) |
| Land Rover Range Rover Velar (2017 onwards) | 3.0L AJ20P6 Petrol High (From VIN MA000001) |
If you are unsure of compatibility with your vehicle, you can also confirm by checking against your V.I.N. Simply reach out to us with your V.I.N and desired part number via our Contact page or use our Finding Part Numbers page.
Replacement of LR121793 is carried out as part of timing gear repair or overhaul, or sooner if wear, elongation or damage is identified; always replace associated timing components according to the vehicle manufacturer's service instructions and confirm fitment via the vehicle's VIN.
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