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Ford 8.8" Nitro Lunch Box Locker, 31 Spline
Nitro Lunch Box Locker

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Price: $395.00

Product Code: LBF8.8-31

Description Vehicle Applications Warranty Information

Ford 8.8" with 7/8" cross pin
Nitro Lunch Box Locker - Automatic Locking Differential

1997-2011 Ford F150 Pickup ( Front Differential)
1979-1986 Ford LTD
1987-1988 Ford Thunderbird Turbo Coupe
1986-1988 Mercury Cougar XR7 & V8
1984-1992 Lincoln Continental Mark VII
1980-2002 Lincoln Continental
1981-2011 Lincoln Town Car
1979-1986 Mercury Marquis
1983-2011 Mercury Grand Marquis
2003-2004 Mercury Marauder
1992-2011 Ford Crown Victoria
1989-2011 Ford Ranger w/ 4.0L V6 (Not FX4 Level II)
1986-2011 Ford Mustang

Differential: Ford 8.8" -10 bolt
Axle Splines: 31
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
Price: $258.00

80W-140 Nitro Para-Synthetic Plus Gear Oil
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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