Quick Answer:

  • 1983–1989: Dana 28 TTB front axle
  • 1990–1997: Dana 35 TTB front axle
  • 1993–1997: Some trucks used a Dana 35/28 hybrid axle
  • The Dana 35 TTB is preferred for larger tires, off-road use, and long-term durability

Who This Page Is For

This page is intended for Ford Ranger and Bronco II owners who are identifying a front axle, planning a tire or suspension upgrade, rebuilding a Dana TTB axle, or deciding whether a Dana 35 swap is worthwhile over a Dana 28.

Introduction

All 1983–1997 Ford Ranger 4×4 models used Ford’s Twin Traction Beam (TTB) front suspension. Depending on model year and configuration, Rangers were equipped with either a Dana 28 TTB, Dana 35 TTB, or a Dana 35 housing combined with Dana 28 internal components (Dana 35/28 hybrid).

While these axles appear similar, they differ in strength, internal components, brake compatibility, axle shafts, gear ratios, and upgrade potential. This page documents those differences to help with identification, repairs, and build planning.

Ford Twin Traction Beam (TTB) Front Axle Overview

The TTB suspension combines the ride quality of independent suspension with the strength and serviceability of a solid axle. Developed by Ford and Dana, it uses traditional axle components like U-jointed shafts, serviceable wheel bearings, and locking hubs.

Each beam pivots from the frame, supporting a steering knuckle. Inboard ends cross near the frame center with a U-joint allowing independent movement, improving ride comfort while maintaining durability.

1983–1997 Ford Ranger Dana 28 and Dana 35 TTB 4WD front axle

Dana Axle Types (1983–1997)

  • Dana 28 TTB – 1983–1989
  • Dana 35 TTB – 1990–1997
  • Dana 35/28 Hybrid – 1993–1997 (Dana 35 housing with Dana 28 internals)

The Dana 35/28 hybrid appears like a Dana 35 but retains Dana 28 differential strength limitations. See Dana 35 TTB Hybrid Details.

Dana 35 TTB front axle

Dana 35 TTB (above) / Dana 28 TTB (below)

Dana 28 TTB front axle

Dana 28 & Dana 35 TTB Specifications

Specification Dana 28 Dana 35
Width (Wheel Mount Surface – Surface) 58 Inches 59.5 Inches
Ring Gear Diameter 6.625 Inches 7.56 Inches
Ring Gear Bolts (8) 3/8″ x 24 RH
Pinion Stem 1.312 Inch 1.406 Inch
Carrier Breaks 3.73 up, 3.45 & down 3.55 up
Axle Shaft Diameter / Spline 1.00 / 23 1.16″ / 27
Bolt Pattern 12 Bolt Pattern On Front Of Axle 10 Bolt Pattern On Front Of Axle
Factory Ratios 3.08, 3.45, 3.73, 4.10 3.27, 3.55, 3.73, 4.10
Aftermarket Ratios 4.56, 5.13 (Discontinued) 4.56, 4.88 5.13
U-Joints 5-456x (1210 Series) 5-297x (stock), 5-760x
Max Tire Diameter Rating 31 Inches 35 Inches (TTB), 33 Inches (SLA IFS)
Pinion Bearing Preload 10 – 13 In Lbs (new)  6 – 8 In Lbs (used) 15 – 25 In Lbs (new bearings)  6 – 8 In Lbs (used)
Backlash 0.005-0.008 Inches 0.005-0.008 Inches
Ring Gear Bolt Torque 55 Lbs Foot 70-90 Lbs Ft
Carrier Bearing Cap Torque 30-45 Lbs Foot 47-67 Lbs Ft
Pinion Nut Torque 140 – 500 lbs-ft Foot (crush sleeve) 170 – 500 lbs-ft (crush sleeve)
Fluid 2 Quarts Hypoid Gear Lubricant SAE 80W or 90W 3 Quarts Hypoid Gear Lubricant SAE 80W or 90W
Exploded Views & Part Numbers Click HERE Click HERE
Resource – Randy’s Ring & Pinion

Visual Differences: Dana 28 vs Dana 35

The Dana 28 TTB has a narrower width, smaller ring gear, and thinner axle shafts. The Dana 35 TTB has thicker beams, larger U-joints, and more robust spindles. Visual clues:

  • Ring gear bolt pattern: Dana 28 is smaller, Dana 35 has 8 bolts.
  • Axle shaft spline count: Dana 28 = 23, Dana 35 = 27.
  • Dana 35 has a larger diff cover with more mounting bolts.

The below photos show the visual differences between the Dana 28 and Dana 35:

Ford Ranger Dana 35 & Dana 28 4x4 Front Axle differentials

Ford Ranger Dana 35 & Dana 28 4x4 Front Axle differentials top view

Axle Shaft Dimensions & Comparison

Ranger Dana 28 uses 1.00″ diameter, 23-spline shafts.

Dana 35 uses 1.16″ diameter, 27-spline shafts.

For hybrid Dana 35/28 axles, the outer shaft is Dana 35, but internal strength is limited by Dana 28 differential.

Dana 28 left hand shaft assembly

Dana 28 right hand shaft assembly

Dana 28 TTB shaft & slip yoke assembly

Dana 35 TTB left hand shaft assembly

Dana 35 TTB right hand shaft assembly

Dana 35 TTB shaft and slip yoke assembly

Below is a picture of a Dana 28 & Dana 35 driver side axle shaft with the dimensions shown:

 Dana 28 and Dana 35 axle shaft comparison photo

Axle Shaft Dimension Chart

Component Dana 28 TTB Dana 35 TTB Why It Matters
Left Axle Shaft 1.00″

23-spline

1.16″

27-spline

Thicker shafts and more splines increase torsional strength.
Right Axle Shaft Outer: 1.00″

23-spline

Inner: 1.19″

28-spline

Outer: 1.16″

Inner: 1.36″

31-spline

Stronger inner shafts handle locker and low-gear loads.
Axle Shaft & Slip Yoke 1.00″

23-spline shaft

1.21″

28-spline yoke

1.16″

27-spline shaft

1.39″

31-spline yoke

Larger yokes resist wear and failure under suspension travel.
U-Joint Size 5-456 5-760 The 5-760 U-joint is significantly stronger and widely supported.

Spindles, Hubs & Brake Compatibility

Spindles

Dana 28 spindles are thinner and use smaller brake rotors/drums. Dana 35 spindles support larger brakes and aftermarket upgrades. Upgrading tires beyond 31″ on Dana 28 often requires a Dana 35 swap for safety.

Here’s a picture of a Dana 35 (Left) and Dana 28 (Right) spindle with dimensions shown:

Dana 35 and Dana 28 spindle dimensions and comparison

Brakes

The 1983-1994 front brake is a single piston caliper with slide pins. In 1995 the caliper was upgraded to a dual piston (2-piston) caliper and the rotor was upgraded to 1.023 inches thick. The caliper bolts to the steering knuckle and does not use slide pins.

The 1983-1988 axle beams are different than the 1989-1997 beams. In 1989, Ford moved the ball joints from the beam to the steering knuckle. So you can not swap the 1995-1997 steering knuckles on to these beams. The dual piston calipers will only fit the 1995-1997 steering knuckles, and those knuckles can only be swapped on to the 1989-1994 beams. So if you have a 1983-1988, you’ll need to swap in a 1989-1994 beam, or swap in a 1995-1997 beam with the dual piston calipers.

For more information about the front brakes and brake upgrades, check out ‘Ford Ranger Brake Upgrades‘.

Dana Axle Identification Labels

Your front axle may have a code stamped on the left carrier arm between the fill plug and axle end.  It will look like ‘F17A‘ or similar.  What this code represents is;

= 1980’s

F = 1990’s

= Last digit of year

7 = Ranger

A = Light Truck Engineering

For more information on breaking down codes, click HERE.

Since the Dana 28’s were built in the 1980’s, their code will start with an ‘E’ whereas the Dana 35’s were built in the 1990’s and will start with an ‘F’.  The above-mentioned code would indicate that the axle was a Ranger axle built in 1991.

There is a manufacturers label on the back side of the right axle beam that lists the year manufactured and gear ratio.

Dana 35 axle label identification

The top left corner of the sticker has the Dana PN (also called BOM (Build of Material) number). The 610366 identifies this as a:

610366 FORD 35 FRONT 1990 1/2-92 1/2 EXPLORER

Note: The ‘8’ after the 610366 actually corresponds to the gear ratio

The second box from top right identifies it as having 3.73 gears.

The third box indicates whether it’s a standard differential or Trac Lok

These stickers are on the back side of the passenger side axle beam.

Build of Material (BOM) Numbers

For replacement parts, Dana lists build-of-material numbers. Typical reference numbers for Ranger axles:

610171 FORD DANA 28 FRONT 1983-1984 FORD RANGER
610223 FORD DANA 28 FRONT 1984 1/2-1985 FORD RANGER / BRONCO II
610249 FORD DANA 28 FRONT 1986-87 FORD RANGER / BRONCO II
610298 FORD DANA 28 FRONT 1987 1/2 FORD RANGER / BRONCO II
610300 FORD DANA 35 FRONT 1990 FORD RANGER / BRONCO II
610307 FORD DANA 28 FRONT 1988-1989 FORD RANGER / BRONCO II
610365 FORD DANA 35 FRONT 1990 1/2-92 1/2 FORD RANGER / BRONCO II
610366 FORD DANA 35 FRONT 1990 1/2-92 1/2 FORD EXPLORER
610410 FORD DANA 35 FRONT 1993-1994 1/2 FORD EXPLORER ABS
610418 FORD DANA 28 FRONT 1993-1994 1/2 FORD RANGER (Hybrid axle)
610419 FORD DANA 35 FRONT 1993-1994 1/2 FORD RANGER
610436 FORD DANA 35 FRONT 1992 1/2 FORD RANGER
610437 FORD DANA 35 FRONT 1992 1/2 FORD EXPLORER
610483 FORD DANA 35 FRONT 1995-1997 1/2 FORD RANGER ABS
610484 FORD DANA 28 FRONT 1995-1997 1/2 FORD RANGER ABS (Hybrid axle)
610652 FORD DANA 35 FRONT 1997-1997 1/2 RANGER
610653 FORD DANA 28 FRONT 1997 RANGER NON ABS (Hybrid Axle)

 

Build Of Material Numbers For 1983-1989 Dana 28 Axles:

Bill of Material Diff Type Ratio
1983-1984 Ford Ranger
610171-1 Standard 3.08
610171-3 Standard 3.45
610171-5 Standard 3.73
610171-6 Trac Lok 3.73
610171-8 Standard 3.45
610171-9 Standard 3.73
610171-10 Standard 4.10
610171-11 Standard 3.08
610171-12 Standard 3.45
610171-13 Standard 3.73
610171-14 Standard 3.45
610171-15 Standard 3.73
610171-16 Standard 4.10
610171-17 Trac Lok 4.10
1984-1/2 To 1985 Ford Ranger / Ford Bronco II
610223-1 Trac Lok 3.73
610223-2 Standard 3.08
610223-3 Standard 3.45
610223-4 Standard 3.73
610223-5 Standard 3.45
610223-6 Standard 3.73
610223-7 Standard 4.10
610223-8 Trac Lok 4.10
610223-9 Standard 3.45
610223-10 Standard 3.73
610223-11 Standard 4.10
1986-1987 Ford Ranger / Ford Bronco II
610249-1 Trac Lok 3.73
610249-2 Standard 3.08
610249-3 Standard 3.45
610249-4 Standard 3.73
610249-5 Standard 4.10
610249-6 Trak Lok 4.10
610249-7 Standard 3.45
610249-8 Standard 3.73
610249-9 Standard 4.10
1987-1/2 Ford Ranger / Ford Bronco II
610298-3 Standard 3.45
610298-4 Standard 3.73
610298-5 Standard 4.10
610298-7 Standard 3.45
610298-8 Standard 3.73
610298-9 Standard 4.10
1988-1989 Ford Ranger / Ford Bronco II
610307-1 Standard 3.45
610307-2 Standard 3.73
610307-3 Standard 4.10
610307-4 Standard 3.45
610307-5 Standard 3.73
610307-6 Standard 4.10

NOTE: 610418, 610484, and 610653 are Dana 35/28 Hybrid axles. They’re listed in the Dana parts catalog under the Ford Model 28 /174 IFS Front Axles.

NOTE: For a breakdown of part numbers check out the Dana 28 Parts Catalog.

Build Of Material Numbers For 1990-1997 Dana 35 Axles:

Bill of Material Diff Type Ratio
1990 Ford Ranger / Ford Bronco II
610300-1 Standard 3.73
610300-2 Standard 3.55
610300-3 Standard 3.73
610300-4 Standard 3.55
610300-5 Standard 4.10
610300-6 Standard 4.10
1990-1/2 – 1992-1/2 Ford Explorer
610366-1 Standard 3.73
610366-2 Standard 3.55
610366-3 Standard 3.73
610366-4 Standard 3.55
610366-5 Standard 3.27
610366-7 Standard 3.55
610366-8 Standard 3.73
1990-1/2 92 1/2 Ranger/Bronco II
610365-1 Standard 3.73
610365-2 Standard 3.55
610365-3 Standard 3.73
610365-4 Standard 3.55
610365-5 Standard 4.10
610365-6 Standard 4.10
610365-7 Standard 3.27
610365-8 Standard 3.27
610365-9 Standard 3.55
610365-10 Standard 3.73
610365-11 Standard 4.10
1992-1/2 Ford Explorer
610437-1 Standard 3.27
610437-2 Standard 3.27
610437-3 Standard 3.55
610437-4 Standard 3.73
610437-5 Standard 3.73
1992-1/2 Ford Ranger
610436-1 Standard 3.27
610436-2 Standard 3.27
610436-3 Standard 3.55
610436-4 Standard 3.55
610436-5 Standard 3.73
610436-6 Standard 3.73
610436-7 Standard 4.10
610436-8 Standard 4.10
1994-1/2 Ford Explorer – ABS
610410-1 Standard 3.73
610410-2 Standard 3.73
610410-3 Standard 3.27
610410-4 Standard 3.27
610410-5 Standard 3.55
1993-1994 1/2 Ford Ranger
610419-1 Standard 3.73
610419-2 Standard 3.27
610419-3 Standard 3.27
610419-4 Standard 3.73
610419-5 Standard 3.45
610419-6 Standard 3.45
1995-1997 1/2 Ford Ranger – ABS
610483-3 Standard 3.27
610483-4 Standard 3.27
610483-7 Standard 3.73
610483-8 Standard 3.73
610483-11 Standard 3.27
610483-12 Standard 3.73
1997-1997 1/2 Ford Ranger
610652-1 Standard 3.27
610652-2 Standard 3.73
610652-3 Standard 3.27
610652-4 Standard 3.73

 

NOTE: For a breakdown of part numbers check out the Dana 35 Parts Catalog.

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About The Author

Founder / Administrator at  | Staff Profile

Jim Oaks is the founder of The Ranger Station, one of the longest-running Ford Ranger enthusiast communities on the web. He has spent over three decades owning, modifying, repairing, and driving Ford Rangers on the street, trail, and cross-country routes.

Since launching TheRangerStation.com in 1999, Jim has documented thousands of real-world Ranger builds, technical repairs, drivetrain swaps, suspension modifications, and off-road tests contributed by owners worldwide. His work has been referenced by enthusiasts, mechanics, and off-road builders looking for practical, experience-based information rather than theoretical advice.

Jim’s hands-on experience includes long-distance overland travel, trail use, drivetrain and axle upgrades, suspension tuning, and platform comparisons across multiple Ranger generations. The content published on The Ranger Station is grounded in first-hand experience and community-verified data, not marketing claims or generic specifications.