Speedmaster 35-Spline Nodular Iron Third Member Assembly with Spool for Ford 9” Differential

From the streets to the tracks, this Speedmaster 35-spline third member assembly helps Ford 9” differentials conquer them all! Pick from 1 of 13 gear ratios for the power of an assembly with a 1000+ horsepower rating. Its strength comes from a nodular iron case with a thru-bolt center design, allowing pinion reinforcement via 10 billet aluminum bolts. You even get a forged chromoly steel spool, CNC-machined to allow a stiffer ring gear mounting. In doing so, you’re spared the hassle of gear failure caused by case deflection or side-gear failure.

Features and Benefits:
- Available in 13 Different Gear Ratios
- Great for Daily Drivers, Street Rods, and Race Cars
- Nodular Iron Case with Thru-Bolt Center Design
- 1000+ Horsepower Rating
- 1-Piece Steel Bearing Caps
- CNC-Machined, Forged Chromoly Steel Spool
- Provides Rigid Ring Gear Mounting
- Eliminates Gear Failure Caused by Case Deflection
- High-Quality, CNC-Machined Gear Sets
- Lapped for Correct Tooth Contact and Smoothness
- Gears Made of 8620 Chrome-Nickel-Moly Steel
- Heat-Treated for Extreme Durability and High Impact
- 1350 Series, Long-Style, CNC-Machined, Billet, TDS Yokes
- (10) Billet Aluminum 12-Point Thru-Bolts for Pinion Support

For lasting strength and performance, the assembly also includes high-quality gear sets. They’re CNC-machined and lapped for the correct tooth contact and smoothness, ensuring a perfect fit and the best quality. Heat-treated for extreme durability to boot, their 8620 chrome-nickel-moly steel construction guarantees you can face the roads without fear.

Specifications:
- Carrier Bearing Diameter (inches): 3.250”
- Standard Pinion Location: Yes
- Ring Gear Load Bolt: No
- Ring and Pinion Included: Yes

Vehicle Fitment:
- 1965-1973 Ford Mustang
- 1966-1977 Ford Bronco
- 1948-1979 Ford F-100

Please Note: These third members are to be used with a mineral-based oil that has a range of EP140 Extreme pressure at a minimum. Do NOT use split grades such as 85/140 (these are not recommended). Failure to use the correct oil can result in gear damage and noise.