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Moser Engineering Ring and Pinion Sets 07-990389 Ford 9 in. 3.89 Gears
Part Number: MSR-09F389P
Moser Engineering Ring and Pinion Sets
Gear, Ring and Pinion, 3.89:1 Ratio, Ford, 9 in., Competition, Set
See More Specifications
Estimated Ship Date: Oct 20, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
07-990389
Part Type:
Product Line:
Summit Racing Part Number:
MSR-09F389P
Differential Case Design Type:
Ford 9 in.
Ring and Pinion Ratio:
3.89:1
Ring Gear Bolts:
10
Pinion Spline Count:
35
Ring Gear Rotation:
Standard
Ring Gear Teeth:
35
Pinion Gear Teeth:
9
Ring Gear Diameter (in.):
9.000 in.
Pinion Shaft Diameter (in.):
1.501 in.
Installation Kit Included:
No
Cover Gasket Included:
No
Pinion Shims Included:
No
Carrier Shims Included:
No
Crush Sleeve Included:
No
Pinion Seal Included:
No
Pinion Nut Included:
No
Ring Gear Bolts Included:
No
Head Bearing Included:
No
Tail Bearing Included:
No
Carrier Bearings Included:
No
Axle Seals Included:
No
Axle Bearings Included:
No
Differential Cover Included:
No
Differential Oil Included:
No
Friction Modifier Included:
No
Installation DVD Included:
No
Quantity:
Sold as a set.
Moser Engineering Ring and Pinion Sets
Moser Engineering stocks a full line of ring and pinion gears to fit most popular rears. These gears are CAD-designed, CNC-machined, and computer control heat-treated to ensure that you receive the highest quality and best performing gears on the market. Moser offers two types of ring and pinion gears: Pro Street street/strip gears, which are capable of handling most applications; and Competition gears—also known as Pro gears—intended only for drag strip applications.
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