8-speed cvt automatic transmission planetary gear 1087240049
Key Features & Analysis:
-
Application: ZF 8HP series (likely 8HP45/55/70), supporting 2nd/4th/6th/8th gear ratios.
-
Design: Compound planetary set (Ravigneaux or Lepelletier type) with hardened 18–22 tooth sun gear and 42–46 tooth ring gear.
-
Material: Case-hardened 20MnCr5 steel (core hardness 58–62 HRC, surface >800 HV).
-
Critical Tolerances:
-
Backlash: 0.05–0.12mm (exceeding 0.15mm causes whine)
-
Runout limit: <0.03mm
-
-
Failure Modes:
-
Pitting/spalling (fatigue due to high torque cycling)
-
Bearing journal wear (if oil debris present)
-
Thermal distortion (if ATF exceeds 140°C)
-
Note: Requires ZF Lifeguard 8 fluid for proper lubrication. Common in Audi/BMW applications.



8-speed CVT automatic transmission gear
,planetary gear for transmission 1087240049
,CVT transmission parts with warranty
-
remanufactured 0C8325039A automatic transmission slide valve box for 2013 Audi Q7 4.2 TDI 8speed AWD LSG NAE LUA NNP
Company Introduction Meishun company focuses on automotive automatic transmission assembly, spare parts, maintenance parts including valve body, chain belt, pulley set, solenoid valve kit, clutch kit, seal kit, TCU, control models, differential, oil pump, piston, etc. A full range of transmission ... -
Remanufactured GA8F22AW TG-81SC 8-Speed Automatic Transmission Overhaul Kit for BMW OEM Quality
1. Product Overview This is a remanufactured GA8F22AW (TG-81SC) 8-Speed Automatic Transmission Overhaul Kit , a complete OEM-quality rebuild solution specifically designed for BMW vehicles equipped with the GA8F22AW (TG-81SC) 8-speed automatic transmission. As a comprehensive overhaul kit, it ... -
OEM 473323B510 A6LF1 Transfer Case Drive Gear for Kia Sorento 2013-2020 / Hyundai Grand Santa Fe
1. Product Overview This is a high-quality remanufactured A6LF1 AWD Transfer Case Driven Gear (OEM 473323B510) , professionally rebuilt and tested to fit Kia Sorento (2013-2020 3.3L) and Hyundai Grand Santa Fe (2013-) models equipped with A6LF1 AWD automatic transmissions. As a critical component of ...