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Ring and Pinion Ratio
- 3.25:1 (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 3.50:1 (2) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- 4.11:1 (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Case Material
- Nodular iron (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Aluminum (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Main Cap Material
- Steel (4) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
- Cast aluminum (1) The options in this area are not available since you have already selected choices in the area. Use the "Get Results" button for your current choices.
Price Range
- $1500-$2000 (1)
- $2000-$5000 (4)

Third Member Complete Assembly

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Individual Parts

Part Groups

Results 1 - 5 of 5

Moser Engineering Ford 9 in. Third Member Assemblies 3MNA31AA350

Third Member Assembly, Ford 9 in., Nodular Iron Case, Auburn, 31-Spline Axle, 3.50:1 Ratio, Each

Part Number: MSR-3MNA31AA350

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Center Section, 9 in. Ford, Nodular Iron, Auburn Limited Slip, 31-Spline Axle, 4.11:1 Ratio, Each

Part Number: MSR-3MNA31AN411

Not Yet Reviewed

Estimated Ship Date: Jan 26, 2026 if ordered today

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Estimated Ship Date: Jan 26, 2026 if ordered today

Center Section, 9 in. Ford, Aluminum Case, Auburn, 31-Spline Axle, Daytona Pinion Support, 3.25:1 Ratio, Each

Part Number: MSR-3MAA31AA325

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Center Section, 9 in. Ford, Nodular Iron, Auburn Limited Slip, 31-Spline Axle, 3.25:1 Ratio, Each

Part Number: MSR-3MNA31AA325

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today

Third Member Assembly, Ford 9 in., Cast Iron Case, Auburn, 31-Spline Axle, 3.50:1 Ratio, Each

Part Number: MSR-3MSA31AN350

Not Yet Reviewed

Estimated Ship Date: Feb 18, 2026 if ordered today

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Estimated Ship Date: Feb 18, 2026 if ordered today