




🚀 Lock in traction, unlock your adventure!
The PowerTrax 1921-LR Lock-Right Differential Locker is a precision-engineered, drop-in upgrade for GM 8.5" 30 spline axles, delivering superior traction by locking both wheels when needed. Designed for a wide range of Chevrolet, GMC, Buick, and Cadillac vehicles, it offers maintenance-free durability and easy installation with no modifications. Perfect for off-road enthusiasts and heavy-duty drivers, it comes with a 2-year or 100,000-mile warranty, ensuring reliable performance on and off the road.








| ASIN | B003JBVBD2 |
| Best Sellers Rank | #4,290 in Automotive ( See Top 100 in Automotive ) #33 in Automotive Replacement Drive Train Parts |
| Brand | PowerTrax |
| Customer Reviews | 4.2 4.2 out of 5 stars (395) |
| Date First Available | 27 June 2014 |
| Item Weight | 3.18 Kilograms |
| Item model number | 1921-LR |
| Manufacturer | Powertrax |
| Manufacturer Part Number | 1921-LR |
| Model | 1921-LR |
| OEM Part Number | 1921-LR |
L**O
INSTALACIÓN FACIL Y SIN MAYORES COMPLICACIONES, EL INSTRUCTIVO NO EXPLICA 100% COMO HACERLO PERO EN YOUTUBE HAY MUCHOS TUTORIALES DE COMO HACERLO. ENCAJO PERFECTO PARA UN EJE FORD 8.8 DE EXPLORER 2001.
C**R
Will not fit in a 10 bolt with a g80 carrier pull your diff cover first make sure ya don’t have the factory limited slip junk that only spins one tire
D**B
Best locker for the dollars!!
T**R
Works perfectly in my gm 9.5in 14 bolt semi float axle for my 93 blazer. Read the instructions i installed it the hard way with the springs and pins installed when putting it into the carrier instead of slipping them in thru the side as it was designed. I got it for 367$ which beats summits price by about 300$ engages smoothly under load when I want it to but it is rough on the locking and unlocking when idling in gear thru parking lots but I think its only because its a manual. Seems pretty stout and fit with the original thrust washer shims that it came with and the cross pin fit better then the original. We'll worth the money. I might even consider one for my c1500 with the same axle for a street truck as the street manners is better than expected unless you're hot rodding it thru the turns then it'll chirp the inner tire or break both tires lose
S**S
I'm not very mechanicaly inclined but I was able to follow a video and easily had this installed It took me around 8 hours. Very novice mechanic
Trustpilot
5 days ago
3 weeks ago