Wix 58879 Transmission Filter Kit

Wix 58879 Transmission Filter Kit

The Wix 58879 transmission filter kit is built for automatic transmissions that need clean, controlled fluid flow. It uses application-specific filtration media and sealed construction to help keep unfiltered fluid from bypassing the filter, making it a practical choice for classic GM and Pontiac applications.

Compatible with 1964-1967 Buick LeSabre and Riviera, 1964-1967 Cadillac DeVille and Eldorado, and 1965-1967 Pontiac GTO, Bonneville, Catalina, Grand Prix, and Firebird TH400 applications, this kit is also a fit for several 1966-1967 Chevrolet and Oldsmobile models. The part number 58879 is commonly searched for automatic transmission service on these vehicles.

Key Features

• Automatic transmission filter kit for service work
• Lock-seamed and sealed filter assembly helps prevent bypass around the media
• Application-specific sealing components support proper fluid control
• Includes sealing gaskets designed for modern transmission fluids
• Closed inner diameter top and automatic transmission filter style
• Cross-reference example: ACDelco PF160

Detailed Description

Wix 58879 is a transmission filter kit designed for automatic transmissions that require precise filtration during service. The filter construction is engineered so fluid passes through the media rather than around it, while the sealing design helps maintain a secure fit in the transmission pan area. For owners servicing a Buick LeSabre, Pontiac GTO, or Chevrolet Impala with a compatible automatic transmission, this kit supports routine maintenance with the correct filtration and gasket components.

The 58879 part number is associated with a wide range of classic GM applications, including Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac models from the 1964-1967 period. It is especially relevant for TH400-equipped Pontiac Firebird and LeMans applications noted in the fitment data.

What It Helps Address

• Dirty or contaminated automatic transmission fluid
• Poor fluid filtration during transmission service
• Leaks related to worn or incorrect sealing components
• Bypass caused by a filter that does not seal correctly
• Maintenance needs on classic GM and Pontiac automatic transmissions

Installation Notes and Tips

Verify transmission type and model-year fitment before installation, especially on 1967 Cadillac DeVille early production and 1967 Pontiac Firebird TH400 applications. Clean the pan and mating surfaces thoroughly before installing the new filter and gasket components. Confirm the filter seats correctly and that all sealing surfaces are aligned before refilling with the specified transmission fluid.

Quality Assurance

Wix transmission filter kits are built with sealed assemblies and application-specific sealing components to support complete filtration in automatic transmissions. The included gaskets are designed for use with today’s transmission fluids, helping maintain proper service performance on compatible Buick, Cadillac, Chevrolet, Oldsmobile, and Pontiac vehicles.