LR142279 LR142281 Camshaft Phaser | AJ20P4 VVT Sprocket
The LR142279 LR142281 Camshaft Phaser is a VVT camshaft sprocket designed for Jaguar Land Rover Ingenium 2.0T engines, including AJ200 and AJ20P4 variants. It comprises the intake camshaft sprocket LR142279 and exhaust camshaft sprocket LR142281, which regulate valve timing through the AJ200 PT204 Cam Phaser system. By advancing or retarding camshaft position, these phasers optimise engine torque, combustion efficiency, and emissions control across different operating conditions.
This camshaft phaser set is commonly used in Range Rover Evoque, Defender, Discovery Sport, and Jaguar XE, XF, F-Pace, F-Type 2017‑2022 2.0T models. Engine rebuilders and professional workshops rely on these OE‑matched components to replace worn phasers, address cold-start rattle, and resolve diagnostic codes such as P0011 and P0012.
Manufactured to precise OE specifications, the LR142279 LR142281 Camshaft Phaser ensures stable operation of the Ingenium AJ20P4 2.0T intake exhaust camshaft timing gear, providing reliable replacement parts for distributors, repair shops, and engine rebuild projects.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | LR142279 LR142281 Camshaft Phaser |
| Intake OE Numbers | LR142279, 110123463, JDE41016 |
| Exhaust OE Numbers | LR142281, JDE41018 |
| Engine Platform | Ingenium AJ20P4 / PT204 |
| Engine Displacement | 2.0L |
| Type | VVT / Variable Valve Timing Actuator Sprocket |
| Warranty | 12 months or 12,000 miles from the date of Ex-factory |
| Packing | Neutral Packing or Customer Required |
| MOQ | 6 pcs |
| Place for Origin | Ningbo City of China |
| Brand | Wellgine |
AJ200 PT204 Cam Phaser System Function
The AJ200 PT204 Cam Phaser works with the engine oil pressure control circuit and the ECU to change camshaft phase during operation.
Typical operating principle:
- Oil control valve regulates hydraulic pressure.
- Oil pressure enters phaser chambers.
- Internal rotor rotates relative to the outer sprocket.
- Camshaft angle shifts relative to crankshaft timing.
This mechanism allows the engine to optimise:
- Low-speed torque
- Mid-range fuel efficiency
- High-speed airflow
For the AJ20P4 VVT Camshaft Sprocket, stable hydraulic sealing and accurate internal machining determine whether the phaser holds position under load.
Supply Model for European Buyers
The components are supplied directly from the manufacturing facility rather than European warehouse stock.
Typical cooperation model includes:
- Factory direct supply
- Stable production batches for distributors
- Bulk purchase support for rebuilders
- OE number cross-reference support
This structure allows parts distributors to maintain stable inventory for Land Rover Jaguar Ingenium 2.0L VVT sprocket set intake exhaust China supplier wholesale supply chains.
Land Rover Defender Discovery Sport 2.0T VVT sprocket timing fault symptoms
Workshops working on Ingenium engines often inspect the camshaft phaser when the following conditions appear:
- timing chain noise during cold start
- camshaft actuator slow response codes
- intermittent camshaft correlation faults
Replacing the phaser together with chain guides and tensioners is common during major timing service.
Jaguar F-Pace XE 2.0L camshaft timing P0011 P0012 sprocket fix
When these codes persist after replacing the oil control solenoid, the next inspection step usually includes:
- camshaft phaser internal lock mechanism
- oil supply channel contamination
- camshaft position sensor signal stability
In many cases, replacing the LR142279 intake camshaft sprocket for Range Rover Evoque PT204 or the exhaust phaser resolves the issue.
FAQ
1. Are LR142279 and LR142281 used together?
Yes. The LR142279 intake camshaft sprocket is installed on the intake camshaft, while LR142281 exhaust camshaft sprocket is used on the exhaust side.
2. Which engines use the AJ200 PT204 Cam Phaser?
These phasers are used in Jaguar Land Rover Ingenium 2.0L petrol engines, including AJ200 and AJ20P4 variants.
3. What vehicles commonly use this camshaft phaser?
Typical vehicles include Range Rover Evoque, Discovery Sport, Jaguar XE, XF, F-Pace and Defender models equipped with the 2.0T Ingenium engine.
4. Can a faulty phaser cause engine noise?
Yes. A worn phaser often causes a brief rattling sound during cold start, especially before oil pressure stabilises.
5. Should intake and exhaust phasers be replaced together?
In high-mileage engines or timing chain repairs, workshops often replace both to maintain balanced cam timing response.
6. What service mileage typically requires replacement?
There is no fixed interval, but phaser wear commonly appears in engines with 150,000–250,000 km depending on oil maintenance.