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GM 8.875" 12 Bolt Nitro Lunch Box Locker, 30 Spline
Nitro Lunch Box Locker

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Price: $394.00

Product Code: LBGM12BOLT
Currently unavailable

Description Vehicle Applications Warranty Information

GM 8.875" -12 bolt ( 12P & 12T )
Nitro Lunch Box Locker - Automatic Locking Differential

Chev & GMC
1965-1981 Chevy C10 & K10 Pickup
1965-1981 GMC C10 & K10 Pickup
1967-1981 Chevy & GMC Suburban
1969-1981 Chevy K5 Blazer
1970-1981 GMC K5 Jimmy
1971-1981 Chevy & GMC G10 G20 Van Vandura
1964-1972 Chevy / GM Passenger car
Toyota 1970-1997 Toyota Land Cruiser 9.5"

Differential: Ford 8.875" -12P & 12T
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 > 8.875" 12 Bolt - Car 12P & Truck 12T
Products > Differentials & Traction Devices > Differentials & Traction Devices by Axle Application > Chevrolet & GMC > GM 8.875" 12 Bolt - Car (12P) & Truck (12T)