Small Case Sealing Ring Kit for Ford C.I. Transmission 1951-1967

Small Case Sealing Ring Kit for Ford cast-iron automatic transmissions. Reference Ford OEM number K6909 SP when matching this kit to a transmission rebuild or repair application.

Part Details

• Part Type: Transmission sealing ring kit

• Transmission Application: Ford cast-iron small-case automatic transmission

• OEM Reference Number: K6909 SP

• Kit Contents: 8 Sealed Power/Filtran-style Gold Stripe rings and 2 metal rings

• Application Guidance: Verify case size, original ring count, and ring dimensions before ordering

Fitment And Repair Guidance

This sealing ring kit is commonly associated with vintage Ford small-case Fordomatic, Cruise-O-Matic, and Merc-O-Matic transmission applications. Competitor cataloging indicates small-case coverage in the 1951–1967 period, but vehicle and transmission variations exist. Confirm the exact transmission model and compare every supplied ring with the original parts before installation.

Use this kit during a correctly diagnosed transmission repair or rebuild when inspection identifies worn, cracked, hardened, damaged, or unsuitable sealing rings. Replacement rings alone may not correct every slipping, delayed-engagement, or pressure-related concern; related internal components should be inspected during service.

Fluid Service

Use the fluid specified for the particular transmission application. For compatible ATF service, Lubegard ATF Protectant may be used according to its directions; it is not a replacement for correcting worn or damaged transmission components.