Yes the picture you have listed is the ratchet type used in pulling truck, mud boggers, rock crawlers, etc.
Item #31948 - New
Detroit TrueTrac
Ford 10.25" and 10.50" Axle
Full Float Axle Only
Detroit Truetrac®
Detroit truetrac was the first helical gear differential ever introduced into the automotive aftermarket. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintnance free traction. Recognized not only for its durability but also it's smooth and quiet operation.
Engineered to work efficiently in front and rear axles, semi and full float axles. Power is so smooth, it literally goes unnoticed by the driver.
* Uses pairs of "Helical" gear sets
* Gears only - no clutch packs
* Ideal for 4WD front axles or rear axles, as well as 2WD; light trucks, SUVs
* Rugged yet smooth and quiet
* Torque bias ratios of 2.5 to 3.5:1 range
Proven design, low cost and effective performance, all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction!
Our Price: $569.00
Item #31945 - New
Detroit Locker
Ford 10.25" and 10.50" Axle
Full Float Axle Only
The strongest differential available!Part #31900 recommended
The Detroit Locker® is a fully automatic locking differential well known throughout the years for its premium performance and dependable operation.
It maximizes traction by delivering 100% of the torque and power to both drive wheels.
Engineered to keep both wheels in a constant drive mode, it unlocks automatically to permit necessary wheel speed differentiation.
Improved design performs like standard (open) differential in normal driving...until you need it.
Limits wheel spin on wet, muddy and icy terrain for maximum traction.
Improves handling and increases tread life by allowing differences in wheel speed when turning or operating on uneven surfaces.
Dependable, rugged automatic system.
Smooth operation - even in front drive steering axles.
NOTE
icture shows internals with no case, locker comes complete!
Our Price: $635.00