Motive Gear 470331N AMC 20 / Dana 35 Differential Pinion Seal

The Motive Gear 470331N is a precision-engineered differential pinion seal designed for AMC 20 and Dana 35 axle applications. Built to meet or exceed OEM specifications, this polyacrylate seal delivers a reliable, leak-free barrier at the pinion shaft entry point of the differential housing, keeping gear oil contained and contaminants out of the axle assembly.

Proper sealing at the pinion end of the differential is critical to maintaining lubrication across the ring and pinion gears and protecting the pinion bearings from premature wear. A failed or worn pinion seal can lead to gear oil loss, bearing damage, and costly differential repairs — making this an essential maintenance or rebuild component.

Key Specifications:

• Material: Polyacrylate
• Outside Diameter: 2.754 in.
• Inside Diameter: 1.843 in.
• Housing Bore: 2.75 in.
• Width: 0.5 in.
• Axle Type: AMC 20 / Dana 35

Key Features:

• Precision-manufactured to OEM tolerances for a direct-fit replacement with no modification required
• Polyacrylate construction withstands high-speed rotation, heat, and the demands of both on-road and off-road use
• Raw metal finish designed to press securely into the differential housing bore
• Installs using a standard seal driver — no specialty tools required
• Backed by Motive Gear's rigorous in-house engineering and testing standards

Whether you're performing routine axle maintenance, rebuilding a differential, or addressing a leaking pinion seal, the Motive Gear 470331N is a dependable, direct-replacement solution engineered for long-term performance.