Oil Pump Sealing O-ring - ZF 5HP18 (0734.313.064)

Genuine or high-quality replacement O-ring sealing for the oil pump body of a 5-speed automatic transmission ZF 5HP18. This large O-ring ensures a tight connection between the oil pump and the main body of the gearbox. Its hardening or damage leads to serious internal pressure leaks, preventing the entire transmission from working properly.

Technical specifications:

• Manufacturer: OEM / ZF OEM quality replacement
• Condition: New
• Transmission type: 5-speed automatic (ZF 5HP18)
• Application: Oil pump circuit seal
• OEM part number: 0734.313.064

Vehicle compatibility:

The O-ring is designed for vehicles fitted with the 5HP18 box, mainly:

• BMW: 3 Series (E36), 5 Series (E34, E39), 7 Series (E38), Z3

Key benefits:

• Restores a key seal in the hydraulic system
• Prevents pressure loss, which is the cause of many failures
• Necessary to be replaced each time the oil pump is dismantled
• Made of ageing and ATF oil-resistant material

Installation instructions:

Replacing the o-ring requires disassembly of the gearbox and removal of the oil pump. The old o-ring must be removed and the groove in the transmission body thoroughly cleaned. The new o-ring should be gently lubricated with clean ATF oil or assembly grease and carefully seated in the groove before reinstalling the pump.

Summary:

The oil pump O-ring for the 5HP18 transmission is a small and inexpensive part, but its role is absolutely fundamental to the operation of the entire transmission. Its preventive replacement during every overhaul is a must to guarantee the success of the repair and prevent serious pressure problems.