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Brand: C.OEFT
OE numbers: ASBG-XD.G4KH-10
Product Name: Timing Chain Kit
Compatible model:/
Product status: New
Number of teeth on the product: /
Product weight:1.5014kg
Packaging size: 40*40*10 cm
Product packaging: Neutral Packaging
Car Series: Korean
Car Type: for Hyundai Korean
The timing chain connects the crankshaft and camshaft, strictly maintaining a "crankshaft: camshaft = 2:1" transmission ratio and accurately driving the engine’s valve train. During the four strokes ("intake → compression → power → exhaust"), it controls the intake and exhaust valves to open and close according to the preset timing, ensuring normal air intake and exhaust in the cylinders. This provides stable power output for the engine and avoids engine stalling or failure to start due to transmission failure.
2. Precisely Controlling Timing to Optimize Engine Performance
Relying on high-precision sprockets (tooth surface roughness Ra 0.8μm) and an adaptive tensioner, the timing deviation is controlled within 0.5° of crankshaft rotation. Cooperating with the CVVT (Continuous Variable Valve Timing) system of Hyundai’s G4KH engine, it adjusts the valve overlap angle in real time: increasing the overlap angle at low speed to enhance torque (for more powerful starting and traffic following) and reducing the overlap angle at high speed to optimize intake efficiency (lowering fuel consumption). Tests show that it can reduce fuel consumption by 0.3-0.5L/100km under urban driving conditions and improve power response speed by 8%-10%.
3. Stabilizing Chain Tension to Avoid Abnormal Noise and Failures
The hydraulic tensioner compensates for chain slack in real time through engine oil pressure and is equipped with a one-way locking structure to prevent chain slack after the engine is turned off, avoiding "chain impact noise" during the next start-up. Meanwhile, the tensioner housing is made of PA66 + 30% glass fiber-reinforced plastic, with a temperature resistance of 220℃, which can resist high-temperature deformation of the engine under high load, prevent tension failure caused by oil leakage, and eliminate issues such as CVVT phase deviation (avoiding triggering P0016/P0018 fault codes) and power fluctuations caused by "chain tooth skipping."
4. Protecting Core Engine Components to Extend Overall Engine Life
The wear-resistant chain and low-friction guide prevent metal debris from falling into the engine oil, avoiding blockage of the CVVT solenoid valve oil passage (only 2.5mm in diameter) and oil pump filter of the G4KH engine. This reduces high-cost maintenance failures such as "CVVT jamming" and "oil pressure alarm" (the replacement cost of a single CVVT solenoid valve exceeds 800 yuan). At the same time, precise timing control avoids valve-piston collision (the maintenance cost of such failures exceeds 10,000 yuan), indirectly extending the service life of core engine components such as the cylinder block and camsh
The timing chain is made of low-carbon alloy structural steel (20CrMnTiH) and undergoes a "carburizing and quenching + nitriding" process. Its surface hardness reaches Rockwell hardness HRC 60-62, and its tensile strength exceeds 1350MPa. It can withstand continuous impacts under the engine’s high-speed (over 6000rpm) and high-temperature (190-220℃) operating conditions, with wear loss controlled within 0.05mm per 100,000km. Its service life is far longer than that of ordinary chains (up to 180,000km or more), reducing engine failures caused by chain breakage or stretching and lowering long-term maintenance costs.
2. 1:1 OE Compatibility, Zero Installation Threshold
Developed in strict accordance with the structural parameters of the timing system of Hyundai’s G4KH engine, the chain pitch (8mm), sprocket tooth profile (involute modified design with a pressure angle of 20°), and guide mounting hole tolerance are all ≤0.02mm. It perfectly matches Hyundai vehicles equipped with the G4KH engine, such as the Hyundai Elantra, 领动 (Lingdong), and ix35, and can directly replace OE parts without grinding or modification. Additionally, it comes with an installation manual that meets Hyundai’s original standards. Professional technicians can complete the replacement in only 2-3 hours according to the process, which is 35% more efficient than non-specialized kits.
3. Wide Compatibility Covering Multiple Vehicle Models
It is compatible with a range of 2018-2024 Hyundai models equipped with the G4KH 1.6L/1.8L engine (e.g., Hyundai Lafesta, entry-level Tucson L, etc.). There is no need to stock parts separately for a single vehicle model, which significantly reduces the inventory pressure of auto repair shops. It also provides car owners with a "one-stop replacement" solution, avoiding secondary maintenance caused by incorrect part matching.
ed along with technical support, ensuring worry-free use.
4. Detailed Optimization for Daily Commuting Conditions
Targeting the core usage scenarios of Hyundai owners—"frequent start-stops in cities and low-speed traffic following"—the hydraulic tensioner in the kit is equipped with a built-in "adaptive pressure valve." It automatically reduces tension (5-7bar) at idle speed (800-1000rpm) to minimize wear and increases tension to 9-11bar at high speed (over 3000rpm) to prevent chain slack. The guide surface is coated with polytetrafluoroethylene (PTFE), reducing the friction coefficient to 0.07 and minimizing engine mechanical loss, making it suitable for the low-load, high-frequency usage demands of daily commuting.
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