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he thrill of acceleration and smooth gear shifts depend on the seamless cooperation of the car’s “powertrain golden triangle” — engine, transmission, and clutch. As an officially certified supplier for Great Wall Motors’ full lineup (Haval, WEY, Ora, Tank, Great Wall Pickup), Yide Auto Parts has specialized in optimizing powertrain core components for 15 years, ensuring every Great Wall vehicle maintains peak performance. Let’s explore these three key systems and what makes quality parts stand out!
I. Engine Parts: Feeding the “Heart” Right for Power & Fuel Efficiency
The engine is the car’s “heart,” with pistons, crankshafts, and spark plugs as its “cardiac cells” — their precision defines power and durability. Yide adheres to Great Wall’s original factory standards for all engine parts (from Haval H6’s 1.5T to Tank 500’s 3.0T V6), even enhancing key processes beyond factory specs.
1. Piston Assembly: The “Sprinter” in the Engine
Pistons endure high temperature/pressure with thousands of reciprocations per second. Yide’s Great Wall pistons use “high-strength aluminum alloy forging + ceramic coating”: 40% stronger than casting (withstanding Tank 300’s 380N·m torque) and 15% cooler during Haval H6’s continuous climbs, cutting power loss and oil use.
A Haval H9 owner noted: “After Yide’s piston replacement, throttle response at 5,000m Tibet passes was faster — the engine feels 3 years younger!”
2. Crankshaft Connecting Rod: The “Baton” of Power Transmission
The crankshaft connecting rod converts piston motion to wheel power. Yide’s 42CrMo alloy steel crankshaft (aircraft-grade material) has Ra0.8μm surface smoothness (reducing friction by 20%), paired with 12.9-grade bolts (±1N·m torque accuracy) for no power loss in fully loaded Great Wall Wingle 7 pickups.
3. Spark Plug: The “Spark” Igniting Power
Spark plugs are critical for power. Yide supplies iridium plugs (0.6mm electrode) for WEY Mocha hybrids, boosting 2.0T thermal efficiency to 40.5% and saving 1.2L/100km. We also recommend model-specific replacement cycles (30k km for Haval F7x, 60k km for Tank 300) to avoid extra costs.
II. Transmission Parts: The “Transmission Hub” Runs Smoothly Thanks to These Precision Gears
The transmission translates engine power to speed. Yide’s parts (for Haval M6’s 6AT, WEY’s DHT, Great Wall Pickup’s 6MT) follow micron-level precision, making shifts as smooth as “cutting butter.”
1. Gear Set: The “Core Gears” of the Transmission
Gear tooth precision eliminates jerking. Yide’s gears use Gleason processing with carburizing quenching — tooth pitch error ≤0.01mm (1/6 a hair’s diameter). Great Wall Cannon 6MT gears pass 2 million shift tests with ≤0.005mm wear, staying smooth after 100k km.
2. Torque Converter (Exclusive to AT Transmissions): The “Soft Connection” for Power Buffering
AT smoothness relies on torque converters. Yide’s three-element converter uses carbon fiber friction plates (30% higher friction) with <0.3G lock-up shock. Optimized guide wheels for Haval H6’s 7DCT eliminate low-speed jerking, ideal for new drivers.
3. Shift Fork: The “Mechanical Hand” Controlling Gears
Manual shift “suction feeling” comes from precision forks. Yide’s laser-welded forks have ≤0.02mm deformation, paired with self-lubricating bushings. A Wingle 5 owner said: “Shifting feels light as a keyboard — no wrist fatigue on long drives.”
III. Clutch Parts: The “Power Switch” is Stable & Accurate, No Jerking When Starting or Shifting
The clutch is the engine-transmission “power switch.” Yide’s clutch parts (for Great Wall manual/hybrid models) offer wear resistance, high-temperature tolerance, and no slipping — perfect for heavy loading/off-roading.
1. Clutch Disc: The “Key Player” in Friction Transmission
Clutch discs use ceramic-copper composite friction material (200℃ more heat-resistant than asbestos, 0.38-0.42 friction coefficient). Tank 300 discs withstand 400N·m torque (no desert “burning”), lasting 80k km — 30k km more than ordinary discs.
2. Pressure Plate: The “Spring Expert” for Pressing Power
Pressure plates use high-carbon steel stamping + diaphragm springs (500k+ fatigue cycles = 10 years of use). Great Wall pickup plates add heat dissipation fins, lowering temp by 30℃ and avoiding traffic-jam “soft clutch.”
3. Release Bearing: The “Lubricant” Reducing Friction
Release bearings (vulnerable but critical) use double-row balls + sealed covers with high-temp lithium grease (-40℃ to 180℃). Haval H2 bearings have ≤0.05mm radial runout after 100k tests, maintaining light shifts.
Why Choose Yide? Three “Peace of Mind” Reasons for Great Wall Owners
1. Original Homology & Precision: Parts from Great Wall-certified suppliers match factory specs — direct installation, no fitment risks.
2. Sufficient Stock & Fast Delivery: 5 national warehouses — same-day shipping for regular parts, 48-hour arrival for emergencies.
3. After-Sales Guarantee: 12-month/20k km warranty, free replacement for defects, and professional technical support.
The powertrain is your car’s “lifeline” — choose right parts for optimal performance. Whether you’re a Great Wall owner, repair shop, or parts business, Yide offers more than parts: peace of mind and professionalism. Message us now for the Great Wall Powertrain Maintenance Manual to keep your vehicle powerful and worry-free!