BMW ZF8 Gearbox Transmission Sump / Filter Kit With Liqui Moly Oil - HP45, HP50, HP51, HP70

ZF 1087.298.437 – Automatic Transmission Oil-Change / Sump Filter Kit

Overview

• This part is an automatic transmission pan/filter kit by ZF Friedrichshafen AG, designed for use with ZF 8-speed automatic transmissions (such as the 8HP45, 8HP70, 8HP75 and variants).
  

• In essence, it supplies the gearbox hydraulic filter (sump + filter + seal) — i.e. the part of the transmission oil pan assembly responsible for filtering transmission fluid.
  

Key Features & Technical Details

• Function: Serves as the sump (oil-pan) assembly for the automatic transmission, incorporating an integrated hydraulic filter. This helps ensure proper fluid filtration and protects transmission internals from contamination and wear over time.
  

• Compatibility: Intended for use with various vehicles using ZF 8-speed transmissions — notably many models from BMW (3 Series, 5 Series, X3, etc.), depending on gearbox type and VIN.

• Mounting / Installation: The kit typically comprises the sump (oil pan), hydraulic filter, and necessary seal/gasket (and sometimes drain plug) — designed to bolt directly onto the transmission housing (i.e. bolt-on installation).
  

• Build / Quality: As with all ZF parts, the kit is engineered to OEM standards (or OEM-equivalent), ensuring reliable fitment and performance comparable to factory-installed transmission components.
  

Use-Case / Maintenance Role

• The ZF 1087.298.437 kit is typically used during a transmission service — especially when changing transmission fluid and filter as part of routine maintenance or as part of a transmission overhaul.

• By replacing the sump/filter unit, you help restore proper fluid flow and filtration, which supports smoother shifting, prolongs transmission life, and reduces risk of internal wear or failure due to contaminated fluid.