Single Gear Drive Transfer Case

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Base SKU: MCTC-111F
By selecting this Refundable Core Charge, you agree to our Core Charge Policy.

This product is available for phone order only. Please give us a call today! 559-252-7295

Marlin Crawler EcoSeal Logo

Marlin has been rebuilding 1979-95 Gear Drive RF1A transfer cases since 1994. Every transfer case we rebuild is rigorously inspected to ensure we deliver the highest quality product to your door. We can rebuild this transfer case in a variety of different configurations. We offer rebuilt t/cases with our Total-Spline™ 4.70:1 gear set.

Our Total-Spline™ technology was developed in 2000 and doubles the strength of the input gear. In addition, this design increases the spline contact.

Includes our new EcoSeal Heavy Duty Rear Output Seal at no additional cost

Requires an additional core charge which is refunded upon return of your old gear drive transfer case.

Please refer to our Transfer case Bible for an application guide, and then choose an option above to purchase our Ready-To-Install complete t/cases.

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

Marlin Crawler Dual Case Explained

Watch as BigMike explains how our Dual Transfer Case System works
at the 2017 FJ Summit in Ouray, Colorado (conversation begins at the 50-second mark)

How our TacoBox improves your truck's off-road capability

Automatic TacoBox Demonstration in 3rd Gear (91:1)

Rock Crawling Throttle Finesse with an Automatic

Using a Starter to verify Dual Case Load Reduction

Walking The Crawler up "The Wall" @ 580:1

Climbing "The Wall" at Poughkeepsie Gulch
with No Throttle in a 2016 Toyota Tacoma

Downhill with NO driver in a 2016 Toyota Tacoma

Dual Case Engine Compression Braking Demonstration

580:1 Triple Case TacoBox Demonstration