390DU103 | Dana Spicer S400 Differential Flange Half | Casting 390DU102 – New Genuine (NOS)

390DU103 (casting 390DU102) is a genuine Dana Spicer differential flange half. This New Old Stock (NOS) component came from kit 390KQ102X and is designed for S400 axles in the 3.21–3.73 ratio range.

Call 419-522-3320 for pricing and availability.

Key Specifications

• Part Number: 390DU103
• Casting Number: 390DU102
• Manufacturer: Dana Spicer
• Type: Differential Flange Half
• Application: S400 Axles
• Ratio Range: 3.21 – 3.73
• Condition: New Genuine (NOS)
• Kit Reference: From 390KQ102X

What’s Included

• (1) Differential Flange Half – 390DU103 (Casting 390DU102)

Fitment Notes

Fits Dana Spicer S400 axle applications with 3.21–3.73 ratios. Verify casting number and axle specifications before ordering. No hardware or bearings included.

Also available as part of the complete kit: 390KQ100X Dana Spicer S400 Differential Case Kit

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Image Disclaimer

Photos show the actual New Genuine (NOS) flange half you will receive.

Shipping / Location

• Ships from our Mansfield, Ohio warehouse (419-522-3320)
• Parcel or LTL options available based on packaging and weight
• Warehouse Bin Location: DPX_OH_BR549_DAN

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Discount Parts Exchange (DPX) — Mansfield, Ohio — Since 1997