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GM 8.5" Nitro Lunch Box Locker, 30 Spline
Nitro Lunch Box Locker

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Price: $390.00

Product Code: LBGM8.5-30
Currently unavailable

Description Vehicle Applications Warranty Information

GM 8.5"- 10 bolt
Nitro Lunch Box Locker - Automatic Locking Differential

1973-1977 Buick Regal
1973-1977 Buick Apollo
1973-1977 Buick Century
1973-1977 Buick Roadmaster
1984-1987 Buick Grand National
1984-1987 Buick GNX
1970-1981 Chevrolet Camaro
1973-1977 Chevrolet Chevelle
1973-1977 Chevrolet Malibu
1973-1977 Chevrolet Monte Carlo
1970-1975 Chevrolet Nova
1973-1977 Chevrolet El Camino
1971-1996 Chevrolet Caprice
1971-1985 Chevrolet Impala
1994-1996 Chevrolet Impala SS
1970-1981 Pontiac Firebird
1970-1981 Pontiac Trans Am
1971-1977 Pontiac Ventura
1975-1995 Chevrolet G10/G20
1996-2010 Chevrolet Express Van
1975-1995 GMC Vandura G10/G20
1996-2010 GMC Savanah 1500
1980-1987 Chevrolet C10/K10
1980-1987 GMC C10/K10
1988-1998 Chevrolet C1500
1988-1998 GMC C1500
1999-2010 Chevrolet Silverado 1500
1999-2010 GMC Sierra 1500
1980-1991 Chevrolet K5 Blazer
1980-1991 GMC K5 Jimmy
1980-1991 Chevrolet Suburban 1500
1980-1991 GMC Suburban 1500

Differential: GM 8.5" -10 bolt
Axle Splines: 30
Manufacturer: Nitro Gear & Axle
Material: 9310 Steel

3 quarts of Nitro Synthetic Plus Gear Lube

Pack your Lunchbox with Nitro

Travel where you want without breaking the bank, or your vehicle.

Nitro Lunchbox Lockers are TOUGH - RELIABLE - AFFORDABLE. Not everyone needs or wants a selectable locker - Let Nitro Gear & Axle mechanical lockers upgrade your currently open differential! When it comes to performance & strength in an auto (mechanical) locker, our Lunchbox Locker units set the new standard.

Tech Note:
Picture is of a generic LunchBox Locker, parts included may vary depending on application.
LunchBox Lockers replace the internal spider gears of an open differential only, will not work inside limited slip carriers. Open, empty carrier cases sold separately.

Use Replacement Spring Kit LBSPRING-SML For Maintenance.

Nitro Gear and Axle Premium Differential Ring and Pinion Gears, Axles and parts

Nitro Gear & Axle strives to provide the highest quality differential & axle components available. We take the steps necessary to ensure our parts are dependable. Our product range is continually growing to meet the needs of consumers for new ratios and Fits. At Nitro, we know differentials and know what it takes to provide you with high-quality components.


This product can expose you to chemicals including toluene and benzene, which are known to the State of California to cause cancer and birth defects or other reproductive harm.
For more information go to: www.P65Warnings.ca.gov


80W-140 Nitro Para-Synthetic Plus Gear Oil, GL5 (1 Quart)
Price: $22.50

80W-140 Nitro Para-Synthetic Plus Gear Oil

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Products > Differentials & Traction Devices > Differentials & Traction Devices by Type > Lockers > Mechanical > Nitro LunchBox Lockers > Chevrolet & GMC > 8.5" & 8.6"
Products > Differentials & Traction Devices > Differentials & Traction Devices by Axle Application > Chevrolet & GMC > GM 8.5" & 8.6"