BMW ZF Transmission Main Valve Body Seal | 6HP19 6HP21 | Fits E8X E9X E6X w/ ZF 6-Speed Auto – 1 / 3 / 5 Series + X1

Restore Smooth Shifting with Our ZF Transmission Main Valve Body Seal

If your BMW is experiencing delayed or inconsistent shifting, a worn valve body seal could be the root cause. This high-quality replacement seal is designed specifically for ZF 6-speed automatic transmissions, helping to restore proper hydraulic pressure and smooth transmission performance—without needing a full rebuild kit.

Key Benefits:

• Improves Shift Quality & Response: Replaces your worn or leaking main seal to eliminate sluggish gear changes.
• Restores Internal Fluid Pressure: Helps maintain proper hydraulic flow by sealing critical valve body passages.
• Prevents Long-Term Damage: Stops minor leaks before they lead to major transmission issues.
• Cost-Effective Fix: Ideal for targeted repairs when a full kit isn’t necessary.

Fitment: Compatible with BMW models equipped with ZF 6HP19 and 6HP21 transmissions including:

• 1 Series – E82 Coupe, E88 Convertible — 135i (2008–2010 N54 6AT ZF 6HP21), 135i (2011–2013 N55 6AT ZF 6HP21)
• 3 Series – E90 Sedan, E91 Touring, E92 Coupe, E93 Convertible — 335i (2007–2010 N54 6AT ZF 6HP21), 335i (2011–2013 N55 6AT ZF 6HP21); 330i/328i (select markets/years w/ ZF 6HP19/21; verify by VIN)
• 5 Series – E60 Sedan, E61 Touring — 525i / 528i / 530i / 535i when equipped with ZF 6HP19/6HP21 (market/year dependent; verify by VIN)
• X1 – E84 — xDrive35i (2013–2015 N55 6AT ZF 6HP21); early xDrive28i / 23i / 25i if equipped with ZF 6HP19/21 (non-US markets; verify)

DOES NOT FIT: 

• GM GA6L45R / GA6L50R 6-speed autos
• 7-speed DCT (Getrag), ZF 8HP 8-speed, ZF 5HP, or any manual transmissions

Use a VIN decoder or diagnostic scan tool to confirm your transmission model before purchasing.

Important Note: This is a high-quality aftermarket part, fully compatible with ZF transmissions, but not an official ZF product. Always note that:

• BMW alternated between ZF and GM automatics in some years; please check the transmission tag or send us your VIN—we’ll confirm before you buy.”
• Common symptoms of a failing bridge seal: delayed upshifts, flare between 2–3 or 3–4, harsh engagement, trans failsafe.
• Recommended to replace with pan/filter and mechatronic sleeve during service.

Please refer to the “Fitment” section in the product description for compatibility details.