ATP TF-29 Automatic Transmission Filter Kit for GM TH-400 (1968–1990)

ATP TF-29 Transmission Filter Kit — OE-Grade Replacement for GM TH-400

Designed for built-in transmission filters, the ATP TF-29 kit offers a complete service solution for GM TH-400 transmissions from 1968 through 1990. It includes all gaskets, filters, and the components you typically need for a filter change, ensuring a cohesive, OEM-style fit. The kit is manufactured to meet or exceed original equipment specifications, giving you a dependable reference for replacement parts that align with the factory design.

In everyday driving, you may notice a calmer field when performing a routine service with a kit that matches the original design. The included gaskets help ensure a proper seal, while the filters align with the expected flow path to maintain clean hydraulic passages as the transmission shifts through gears.

What makes it a solid choice

• Prevents abrasive particles, corrosive moisture, and other contaminants from entering the transmission
• Made of high quality materials designed for long lasting service
• Resists fatigue under heat and vibration to maintain performance
• Highly durable components that stand up to daily driving stresses
• Specifically tailored to GM TH-400 models from 1968 to 1990

What’s included and how it helps

• Comprehensive gasket set for reliable seals during service
• New filters matched to the original flow path and filtration spec
• All necessary fittings and hardware to complete the installation

Real world use and installation tips

During a typical TH-400 service, the TF-29 kit supports a clean, straightforward replacement process. The included gaskets help ensure a proper seal, while the OE style filter media aims to maintain clean hydraulic passages as the transmission cycles through gears. Users often notice a smoother, more predictable service experience when the kit is installed as part of a regular maintenance interval. Following standard torque specs and factory guidelines can help you achieve consistent results.

Notes on fit and expectations

While this information does not constitute a warranty, the TF-29 kit is designed to align with the original design for 1968–1990 GM TH-400 transmissions, helping to simplify maintenance planning and reduce guesswork during a filter change.