The Eaton Fuller K-4057 or K4057 Basic Rebuild Kit is a comprehensive transmission rebuild kit containing all the critical internal wear components needed for a proper overhaul. The kit includes main case countershaft bearings (front and rear, two each), a reverse gear idler shaft bearing set, an input shaft bearing, a tapered roller bearing, four additional bearings, multiple snap rings, a bushing, springs, sub-kits for shims (K-2805), oil seals (K-2918), O-rings (K-3341), and gaskets (K-3458), plus three instruction letters. Cross-reference numbers include HFK-4057, TRK-4057, and 3088-K4057. Call us to confirm proper fit for your transmission application.
Features
Includes main case countershaft bearings, front and rear (2 each)
Includes reverse gear idler shaft bearings (2) and input shaft bearing (1)
Tapered roller bearing and four additional bearings included
Contains sub-kits: shim kit K-2805, oil seal kit K-2918, O-ring kit K-3341, gasket kit K-3458
Multiple snap rings, bushing, and springs included
Cross-references: HFK-4057, TRK-4057, 3088-K4057, 3088K4057, TRK4057
