N400-RR | Dana N-400 Rear Rear Differential | Remanufactured – Exchange Required

Dana N-400 Rear Rear Differential — Remanufactured by DPE

The Dana N-400 rear rear (tandem) carrier is built for Class 8 International/Navistar trucks. Each carrier is disassembled, cleaned, inspected, and rebuilt to spec using OEM and premium aftermarket components. Units are set to your requested ratio and verified for backlash, gear mesh, and seal integrity.

Quick Specs

• Model: Dana N-400 (Rear Rear Tandem)
• Application: International / Navistar (Class 8)
• Axle Shaft Splines: 36, 39, or 41 (verify before ordering)
• Ratio Options: 3.06 to 7.81 (see table below)
• Weight: ~300 lb carrier assembly
• Condition: Remanufactured exchange (like-for-like core required)
• Common OE Codes: International 514-GDCR / Code 14GDC

Why Choose DPE

• Built to spec — ratio set to order; backlash, mesh, and seals verified
• Heavy-duty durability — ideal for on-highway fleet applications
• Straightforward install — painted, tagged, and prepped for drop-in
• Real support — tech help from DPE during install and initial run-in

Gear Ratio Options & Part Numbers

Confirm ratio and spline count prior to ordering.

Casting & Assembly IDs

• Seal Retainer Cast: 454718K1
• Cap & Carrier Casting: 401CF102
• Cap Casting: 401CP100
• Finished Carrier Assembly: Dana 401CS101-X

What’s Included

• Complete remanufactured N-400 rear rear carrier built to your requested ratio
  
• Painted & tagged for installation
• Tech support from DPE during install & initial run-in

Core Exchange Policy

• Like-for-like, complete, and rebuildable core required
• Deductions may apply for cracked housings, burnt/missing internals, low-lube or water damage, or mismatched units
• Call for pickup return instructions

Shipping

• Method: LTL motor freight to verified commercial addresses
• Requirements: Forklift or dock — residential delivery not available
• Liftgate: Available by request (additional charge may apply)

Lubricant Spec & Recommendation

• Recommended: Spicer FE 75W-90 synthetic gear lubricant (or equivalent meeting OEM specs)

Detroit Locker / No-Spin Options

Traction upgrades available for the N-400 rear rear. Verify spline size before ordering:

• 306S-99 — 1.850" (36-spline)
• 306S-98 — 2.00" (39-spline)
• 306S-100 — 2.100" (41-spline)

Order & Support

Call for pricing & availability: 419-522-3320
Have your ratio and spline count (36 / 39 / 41) ready to speed things up.

Heavy-Duty Solutions | Built to Perform. Trusted to Last.