Factory Steering Box U-Joint – 1” DD to 3/4”-36

Sealed needle bearings. Zero lube. The joint we actually use. Pin and block joints were fine when nothing else existed. They develop play; they want grease nobody remembers to give them; and that play shows up at the rim as the slack you feel every time you come off center. This is the slim profile chrome moly needle bearing joint from Flaming River - 1 inch double D on the column side and 3/4 inch-36 spline on the box side. Rated to 300 ft-lbs; satin finish; sealed for life. It is the exact joint we specify when a 1967-72 or 1973-79 Fat Fender Garage column kit meets a factory steering box. The reduced diameter is what buys clearance in an engine bay that is already crowded. One warning worth reading twice: this is a factory steering box joint. Running a Mustang II or any aftermarket rack means a different joint sized to that rack input. Ask us and we will get you the right one.

  • Sealed needle bearings - a tighter smoother feel than pin and block and no grease schedule to forget.
  • Rated to 300 ft-lbs - a published number standing behind the joint that carries your steering.
  • Slim profile - reduced diameter buys clearance where headers and the steering box are already fighting.
  • Matched to our column kits - the joint we specify on 1967-72 and 1973-79 FFG columns with a factory box.
  • Satin finish - it reads as a made part in a bay people will open at shows.

Install Level: Moderate

For use with the factory steering box only. An aftermarket power steering rack needs a different joint matched to the rack input shaft.
Confirmed fitment with 1967-72 and 1973-79 Fat Fender Garage steering column kits running a factory steering box.
Sealed needle bearings. No lubrication required.
Rated to 300 ft-lbs. Satin finish.
Sold individually. Shafts and pinch bolts are not included.

Flaming River
SKU: FFG-4879-SLK-FR-2WD ISBN: 09442238
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Factory Steering Box U-Joint – 1” DD to 3/4”-36
$209.99
Overview
Specifications
Tech Resources
Compatibility

Factory Steering Box U-Joint – 1” DD to 3/4”-36 (Satin Finish)
Confirmed Fitment with 1967-72 and 1973-79 Fat Fender Garage Column Kits with a Factory Steering Box

This slim-profile, needle-bearing universal joint from Flaming River is the exact part we recommend when connecting our 1967–72 or 1973-79 F100 steering columns to the factory steering box. It’s compact, smooth, and built to last — the same part we trust in our own builds.

Crafted from high-strength chrome moly and featuring sealed needle bearings, it offers a tighter, smoother steering feel than old-school pin and block joints — with zero maintenance required. The low-profile design makes it ideal for tight engine bays and clean installs.

⚠️ Heads up: This U-joint is only for use with the factory steering box. If you’re running an aftermarket power steering rack (like Mustang II or rack-and-pinion setups), you'll need a different joint based on your rack’s input shaft. Reach out to us — we can help you get the right one.

Specs:

  • Size: 1” DD to 3/4”-36 spline
  • Strength: Rated to 300 ft-lbs
  • Finish: Satin
  • Maintenance: Zero-lube, sealed bearings
Part number FFG-4879-SLK-FR-2WD
Vendor: Flaming River
Ends: 1 inch double D to 3/4 inch-36 spline
Construction: chrome moly; slim low profile
Bearing: sealed needle bearing; zero lube
Strength: rated to 300 ft-lbs
Finish: satin
Sold as: one joint
Options: Factory Steering Box 2WD; Factory Steering Box 4WD
Application: 1967-72 and 1973-79 Fat Fender Garage steering column kits with a factory steering box
Listed price 209.99 USD
Variant count: 2
No published overall length or weight on this listing
For a factory steering box only. An aftermarket power steering rack needs a different joint matched to the rack input shaft.
Confirmed with 1967-72 and 1973-79 Fat Fender Garage steering column kits running a factory steering box.
Ends are 1 inch double D on the column side and 3/4 inch-36 spline on the box side.

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