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View All Powertrax Lock Right Positive Locking Differentials
Powertrax

Powertrax 1921-LR

Lock Right Locking Differential GM 8.5" 10 Bolt

Powertrax 1921-LR

754-1921-LR

made in usa
jegs shipping
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Powertrax 1921-LR Lock Right Locking Differential GM 8.5" 10 Bolt $339.99
Lock Right Locking Differential
  • GM 8.5" 10 Bolt
  • 30-Spline
  • For Open Differential

    • Powertrax 1921-LR Details

    GM

    Specifications:

    Spline Count
    30
    Differential Case Design Type
    GM 8.5
    Axle Shaft Spline Quantity
    30
    Aftermarket Carrier Style
    Locker
    Carrier Material
    Steel
    Cover Bolts
    10
    Quantity
    Sold individually
    Manufacturer's Part Number:
    1921-LR

    Powertrax Lock Right Positive Locking Differentials are a revolutionary design that replaces differential spider gears with a coupler gear set that dramatically increases traction. With spider gear differentials, the wheel that has the least amount of traction typically gets full power, which isn't good for a stuck truck. Lock Right Differentials send power to the wheel that has the most traction, enabling escape from almost any situation. Installation time is about an hour; no special tools or setup required because the ring and pinion gears are unaffected.

    Note: Installs in open carriers only.

    Does Powertrax 1921-LR fit your vehicle?

    Narrow Results

    1991-1992 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: BASE

    1988 CHEVROLET CAPRICE

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1990 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: ALL

    1995 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: SS
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1998 CHEVROLET EXPRESS 1500

    • EngineType: ALL
    • SubModel: LS

    1988 CHEVROLET CAPRICE

    • Liter: 4.3
    • SubModel: CLASSIC
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1990-1993 GMC G15/G1500 VAN

    • Liter: 5.0
    • SubModel: RALLY
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1988 CHEVROLET G10 VAN

    • EngineType: ALL
    • SubModel: ALL

    1988 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1990 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET CAPRICE

    • Liter: 5.0
    • SubModel: CLASSIC
    • CUI: 307
    • EngineType: V8 ( 5.0 L / 307 )

    1995 GMC G15/G1500 VAN

    • EngineType: ALL
    • SubModel: RALLY STX

    1992-1995 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: LIMITED

    1994-1995 CHEVROLET G20 VAN

    • Liter: 6.5
    • SubModel: SPORTVAN
    • CUI: 395
    • EngineType: V8 ( 6.5 L / 395 )

    1991 CHEVROLET BLAZER

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: SILVERADO
    • EngineType: ALL

    1992-1993 GMC TYPHOON

    • EngineType: ALL
    • SubModel: ALL

    1989-1993 GMC C1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLX

    1994 GMC G15/G1500 VAN

    • EngineType: ALL
    • SubModel: RALLY

    1995-1998 CHEVROLET S10 PICKUP

    • CC: 2190
    • Liter: 2.2
    • SubModel: BASE
    • CUI: 134
    • EngineType: L4 ( 2.2 L / 134 )

    1990-1995 GMC G25/G2500 VAN

    • Liter: 5.7
    • SubModel: RALLY
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1989 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: LIMITED

    1991-1996 BUICK COMMERCIAL CHASSIS

    • EngineType: ALL
    • SubModel: ALL

    1990-1993 CHEVROLET G10 VAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORTVAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1990-1995 CHEVROLET G20 VAN

    • CC: 5031
    • Liter: 5.0
    • SubModel: SPORTVAN
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1990-1993 GMC G25/G2500 VAN

    • Liter: 6.2
    • SubModel: RALLY
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1996 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: LIMITED COLLECTOR'S EDITION

    1994 GMC SONOMA

    • CC: 2190
    • Liter: 2.2
    • SubModel: SL
    • CUI: 134
    • EngineType: L4 ( 2.2 L / 134 )

    1989 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1994 CHEVROLET K1500 PICKUP

    • Liter: 6.5
    • SubModel: BASE
    • CUI: 395
    • EngineType: V8 ( 6.5 L / 395 )

    1994 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: SILVERADO SPORT

    1988 CHEVROLET R10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1998 CHEVROLET EXPRESS 1500

    • Liter: 5.0
    • SubModel: BASE
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1990-1991 GMC V1500 SUBURBAN

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: ALL
    • EngineType: ALL

    1993-1994 GMC K1500

    • EngineType: ALL
    • SubModel: ALL

    1995 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLE

    1989-1991 CHEVROLET R1500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1989 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: PARK AVENUE

    1990-1995 GMC G25/G2500 VAN

    • Liter: 5.0
    • SubModel: VANDURA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1995-1998 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1991-1993 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC LTZ

    1995 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SL

    1995-1998 CHEVROLET SUBURBAN 1500

    • EngineType: ALL
    • SubModel: ALL

    1993-1994 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC LS

    1988 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1992-1993 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: CHEYENNE

    1998 CHEVROLET EXPRESS 1500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1989 BUICK ELECTRA

    • EngineType: ALL
    • SubModel: T-TYPE

    1990-1995 CHEVROLET G20 VAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SPORTVAN
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1990-1993 CHEVROLET G20 VAN

    • Liter: 6.2
    • SubModel: SPORTVAN
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1990-1995 GMC G25/G2500 VAN

    • EngineType: ALL
    • SubModel: RALLY STX

    1996 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: COLLECTOR'S EDITION

    1994 GMC SONOMA

    • Liter: 4.3
    • SubModel: SL
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1994 CHEVROLET C1500

    • CC: 4097
    • Liter: 4.1
    • SubModel: BASE
    • CUI: 250
    • EngineType: L6 ( 4.1 L / 250 )

    1988 GMC V2500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1995 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SPECIAL

    1998 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: WT

    1998 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: CHEYENNE

    1989 CHEVROLET C1500 PICKUP

    • EngineType: ALL
    • SubModel: BASE

    1988-1989 CHEVROLET S10 BLAZER

    • EngineType: ALL
    • SubModel: ALL

    1998 CHEVROLET EXPRESS 1500

    • Liter: 5.7
    • Aspiration: N
    • SubModel: BASE
    • Engine Vin: R
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1996-1998 GMC YUKON

    • EngineType: ALL
    • SubModel: SLT

    1989-1992 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA

    1990-1994 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: SILVERADO

    1989-1992 GMC K1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA SLX

    1990-1991 CHEVROLET K2500 PICKUP

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: SCOTTSDALE
    • EngineType: ALL

    1991-1994 CHEVROLET S10 BLAZER

    • EngineType: ALL
    • SubModel: ALL

    1994 CHEVROLET S10 PICKUP

    • EngineType: ALL
    • SubModel: LS

    1994 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: BASE

    1990-1993 GMC G25/G2500 VAN

    • Liter: 6.2
    • SubModel: VANDURA
    • CUI: 379
    • EngineType: V8 ( 6.2 L / 379 )

    1989-1991 CHEVROLET V2500 SUBURBAN

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: ALL
    • EngineType: ALL

    1998 GMC SONOMA

    • EngineType: ALL
    • SubModel: SL

    1990-1991 CHEVROLET V1500 SUBURBAN

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: ALL
    • EngineType: ALL

    1995-1998 CHEVROLET TAHOE

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET V10 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1988 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: CLASSIC LS BROUGHAM

    1989-1993 GMC C1500 PICKUP

    • EngineType: ALL
    • SubModel: SIERRA

    1998 CHEVROLET EXPRESS 1500

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1990-1991 CHEVROLET K2500 PICKUP

    • Fitment_Note: w/Beam Axle~w/Locking Hubs Or Front Axle Disconnect; w/o Full Time 4WD~Do Not Operate On Highway w/Front Hubs Locked And 4WD Engaged
    • SubModel: CHEYENNE
    • EngineType: ALL

    1992-1998 GMC K1500 SUBURBAN

    • Fitment_Note: w/Beam Axle
    • SubModel: ALL
    • EngineType: ALL

    1988 GMC V1500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1988 GMC G15/G1500 VAN

    • EngineType: ALL
    • SubModel: ALL

    1992-1995 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: BASE

    1995-1996 CHEVROLET CAPRICE

    • EngineType: ALL
    • SubModel: ALL

    1990-1993 CHEVROLET G10 VAN

    • Liter: 5.7
    • Aspiration: N
    • SubModel: SPORTVAN
    • Engine Vin: K
    • CUI: 350
    • EngineType: V8 ( 5.7 L / 350 )

    1991-1994 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: NEVADA

    1988 CHEVROLET K2500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1998 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: LT

    1990-1995 CHEVROLET G10 VAN

    • EngineType: ALL
    • SubModel: CHEVY VAN

    1991-1992 CADILLAC BROUGHAM

    • EngineType: ALL
    • SubModel: ALL

    1988 GMC R1500 SUBURBAN

    • EngineType: ALL
    • SubModel: ALL

    1994 CHEVROLET K1500 PICKUP

    • Liter: 4.3
    • SubModel: BASE
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1995 CHEVROLET K1500 PICKUP

    • EngineType: ALL
    • SubModel: ALL

    1994-1995 GMC G25/G2500 VAN

    • Liter: 6.5
    • SubModel: VANDURA
    • CUI: 395
    • EngineType: V8 ( 6.5 L / 395 )

    1998 GMC S15 JIMMY

    • EngineType: ALL
    • SubModel: SL

    1990-1995 GMC G15/G1500 VAN

    • Liter: 5.0
    • SubModel: VANDURA
    • CUI: 305
    • EngineType: V8 ( 5.0 L / 305 )

    1996 BUICK ROADMASTER

    • EngineType: ALL
    • SubModel: ESTATE WAGON COLLECTOR'S EDITION

    1995-1997 CHEVROLET BLAZER

    • EngineType: ALL
    • SubModel: ALL

    1996-1998 CHEVROLET S10 PICKUP

    • Liter: 4.3
    • Aspiration: N
    • SubModel: SS
    • Engine Vin: W
    • CUI: 262
    • EngineType: V6 ( 4.3 L / 262 )

    1989 GMC V1500 SUBURBAN

    • Fitment_Note: w/Beam Axle
    • SubModel: ALL
    • EngineType: ALL

    1990-1993 CHEVROLET C1500 PICKUP

    • EngineType: ALL
    • SubModel: 454 SS
    1921-LR is rated 5.0 out of 5 by 2.
    Rated 5 out of 5 by from The locker works great, like it much better than a limited slip. I might say some guys might not like the clicking when turning, for the return on total lock up, well worth it.
    Date published: 2016-12-20
    Rated 5 out of 5 by from Works great The install was super easy and works just as advertised. Great product.
    Date published: 2014-11-02
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    Items You Need
    Some parts are not legal for use in California or other states with similar laws / regulations