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Heavy Duty Transmission Output Seal

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Marlin Crawler EcoSeal Logo

Since 1994 we have been including brand new replacement transmission output seals with every single dual case or low range geared Crawler that has gone out our door.

If you’ve got your transfer case pulled off your transmission, why not replace your transmission output seal? It’s as easy as 1-2-3 and can save you hundreds of dollars in repair costs if your old seal allows transmission fluid to leak into the t/case causing the transmission to run dry.

Protect your transmission, keep your gears lubbed up, replace your transmission output seal today!

Please remember to always grease the ID of any new seal before installation!

These EcoSeal Transmission Output Seals have all the same features that made our Heavy Duty Inner Axle seals world famous!

The 21-spline application fits all 1979-1995 4-cylinder 4- & 5-speed setups that use a gear drive RF1A transfer case.
The 23-spline application fits the R151F transmission found in all 1986-1897 5-speed Turbo 22R-TE setup.

Weight 0.044 lbs
Dimensions 1 × 1 × 0.5 in

21-Spline Output, 23-Spline Output

Make Model Year Notes
Toyota 4Runner 1984 - 1989
Toyota 4Runner 1990 - 1995
Toyota Hilux 1979 - 1983
Toyota Hilux 1984 - 1988
Toyota Hilux 1989 - 1995

Proposition 65 Warning for California Consumers

WARNING: Products we sell can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to

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