Oversize Oil Pan (Bushing) - ZF 5HP19 / 4HP20

Specialised, oversized (Oversized OD - OverSized Outer Diameter) sliding sleeve (bushing) for an oil pump for automatic transmissions ZF 5HP19 and 4HP20. This is a solution to the problem of a worn or damaged socket in the pump body, where a standard pan operates. Instead of replacing the entire, expensive pump, the damaged socket can be mitered and this oversized bushing can be pressed in, restoring ideal operating conditions.

Technical specifications:

• Manufacturer: Specialist substitute (e.g. Sonnax)
• Condition: New
• Transmission type: Automatic 5-speed (ZF 5HP19), 4-speed (4HP20)
• Characteristics: Oversized OD

Application:

The pan is designed for the reconditioning of oil pumps in which the socket of the original pan has ovalized, scratched or otherwise been damaged. It is an advanced repair technique used in professional workshops.

Key benefits:

• Allows the original oil pump to be salvaged and reconditioned
• A much cheaper solution than buying a new pump
• Restores proper support to the converter, eliminating vibration and leakage
• A permanent solution to the problem of pan seat wear

Installation instructions:

This is an operation for highly specialised workshops. It requires the oil pump to be removed from the gearbox and then the socket of the pan to be precisely turned out on a lathe to a dimension matching the oversized bushing. After machining, the new pan must be pressed into the socket.

Summary:

The oversized pump pan for 5HP19/4HP20 transmissions is an excellent example of intelligent remanufacturing. It allows a key component of the transmission to be restored to full performance at a significantly lower cost, benefiting both the workshop and the customer.