High Quality A8LR1 Overdrive Clutch Balance Piston 45581-4F030 for Hyundai Genesis & Kia K9
- Dimensional Verification: The piston is inspected for precise dimensions and fitment accuracy.
- Pressure & Seal Testing: The piston is tested for pressure balance and seal integrity under operating conditions.
- Material & Surface Inspection: The piston material and surface finish are inspected for quality, durability, and wear resistance.
- Environmental Testing: The piston is tested for heat and chemical resistance to withstand harsh transmission conditions.
- Final Quality Control: Visual and functional inspection before packaging to ensure defect-free delivery.
- Professional Installation Required: This piston requires removal and installation by a certified technician with specialized tools.
- Transmission Overhaul Recommended: Always replace the balance piston during transmission overhaul or when experiencing pressure imbalance issues.
- Fluid Recommendation: After installation, use only the specified Hyundai/Kia ATF fluid to ensure proper lubrication and piston performance.
- Packaging: The piston is carefully secured in shockproof foam and a sturdy export carton, ensuring safe transportation. Custom packaging is available on request.
- Shipping: We support worldwide shipping via multiple logistics providers, offering door-to-door delivery services.
- Lead Time: In-stock units are shipped within 1-5 working days after payment confirmation. Bulk orders will be processed according to production schedules.
We are a professional manufacturer & trade integrated company specializing in automatic transmission parts for Hyundai, Kia, and other Korean brands. Our main products include balance pistons, clutches, valve bodies, solenoids, and overhaul kits for AT/CVT/DCT transmissions.
We provide:
- Professional technical support and fitment consultation
- OEM/ODM customization services
- Flexible payment terms and competitive pricing
- Long-term cooperation support for auto parts wholesalers, repair shops, and distributors worldwide
Q1: Will this piston fit my Hyundai Genesis/Equus or Kia K9?
A1: This balance piston is designed for Hyundai Genesis, Equus, and Kia K9 models with the A8LR1 8-speed automatic transmission. Please confirm your vehicle model, year, and transmission type before ordering.
Q2: Is this a new or used part?
A2: This is a brand-new balance piston, manufactured to OEM standards and 100% tested before shipment.
Q3: What issues can this piston resolve?
A3: It fixes common transmission problems like pressure imbalance, shudder, harsh shifts, overdrive clutch engagement issues, and related error codes caused by a damaged or worn piston.
Q4: Do you offer bulk pricing for repair shops?
A4: Yes, we offer discounted pricing for bulk orders and long-term cooperative partners such as transmission repair shops and auto parts wholesalers. Please contact us for a custom quote.


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