24350-2E011 Camshaft Phaser | CVVT Intake Sprocket Hyundai Kia
24350-2E011 Camshaft Phaser is the intake-side variable valve timing actuator used on Hyundai and Kia NU-series petrol engines. The unit is installed on the intake camshaft and adjusts camshaft phase through hydraulic oil pressure supplied by the engine lubrication system.
This 24350-2E011 Intake Camshaft Sprocket replaces OE 243502E010 and is commonly installed on engines such as G4NA and G4NB 1.8L / 2.0L DOHC. In these engines the phaser works with the timing chain and oil control valve to vary valve opening timing across different engine speeds.
The 243502E011 CVVT intake sprocket is typically fitted to vehicles including Hyundai Elantra, Hyundai Tucson and Kia Forte produced between roughly 2010 and 2022. In service workshops this component is also referred to as 24350-2E011 Variable Valve Timing Gear or 24350-2E011 Engine Timing Sprocket 1.8L 2.0L DOHC.
Technical Specifications
| Specification | Details |
|---|---|
| Product Name | 24350-2E011 Camshaft Phaser |
| OE Part Numbers | 24350-2E011, 24350-2E010 |
| Engine Platform | G4NA, G4NB |
| Engine Displacement | 1.8L / 2.0L |
| Type | Hydraulic vane-type cam phaser (VVT / CVVT) |
| 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 |
Structure and Function in the CVVT System
In NU-series engines the 24350-2E011 Camshaft Phaser acts as a hydraulic phase adjuster mounted directly on the intake camshaft.
Main elements involved in the system:
- Timing chain sprocket housing
- Internal rotor connected to the camshaft
- Oil chambers for advance / retard control
- Locking mechanism for start-up stability
When oil pressure from the OCV (oil control valve) enters the phaser, the internal rotor rotates relative to the outer sprocket. This alters intake valve timing to suit operating conditions.
Typical adjustments include:
- Low speed: cam timing retarded for smoother idle
- Mid range: moderate advance to improve torque
- High RPM: increased advance for airflow efficiency
Common Workshop Replacement Scenarios
During engine overhaul or diagnostic work on NU engines, the 243502E011 CVVT intake sprocket may be replaced under several conditions.
Typical failure symptoms
- Metallic rattle from timing cover during cold start
- Fault codes related to camshaft timing deviation
- Engine hesitation or unstable idle
- Visible wear in the internal rotor or lock pin
Components usually replaced together
In professional repair environments, the following parts are often inspected or replaced at the same time:
- Intake 24350-2E011 Camshaft Phaser
- Oil Control Valve (OCV)
- Timing chain tensioner
- Timing chain guides
- Camshaft bolt and washer
This approach reduces the risk of repeated disassembly of the timing cover.
Manufacturing and Quality Control
The production process for a 24350-2E011 Variable Valve Timing Gear focuses on dimensional accuracy and oil-flow stability.
Typical control points include:
- Gear Tooth Hardening: Surface heat treatment improves resistance to timing chain wear.
- Internal Rotor Clearance: Rotor-to-housing clearance controlled to prevent oil leakage.
- Oil Channel Machining: Multi-axis CNC machining ensures stable hydraulic control.
- Functional Testing: Each unit undergoes rotation and leakage testing before packaging.
As a factory-direct supplier, production is carried out in China with batch inspection before export to European distributors and engine rebuilders.
FAQ
1. What is the function of the 24350-2E011 Camshaft Phaser?
The 24350-2E011 Camshaft Phaser adjusts intake camshaft timing using engine oil pressure, allowing the ECU to advance or retard valve timing depending on load and speed.
2. Is 24350-2E011 the intake or exhaust phaser?
The 24350-2E011 Intake Camshaft Sprocket is installed on the intake camshaft of NU-series engines.
3. What part does 24350-2E011 replace?
The part replaces 24350-2E010, which is the earlier OE number used in Hyundai and Kia parts catalogues.
4. Should the oil control valve be replaced with the phaser?
Many repair procedures recommend checking or replacing the OCV when installing a new 24350-2E011 Intake Phase Adjuster G4NA engine code.
5. What oil conditions affect cam phaser life?
Dirty or degraded engine oil can cause internal varnish deposits, which may restrict oil flow inside the 24350-2E011 Variable Valve Timing Gear.
6. Is this part used in both Hyundai and Kia vehicles?
Yes. The OEM 24350-2E011 CVVT Assy Hyundai Kia G4NA G4NB is shared across Hyundai and Kia models using NU engines.
7. Do you supply bulk quantities for engine rebuilders?
Yes. We support trade and distributor volumes with scheduled production runs and consistent lead times.
8. Will using this replacement affect engine performance compared with genuine Hyundai parts?
The unit replicates the original calibration range for advance/retard angles and oil flow characteristics when installed correctly.