Nitro Gear & Axle SJ413 Lunch Box Locker w/coupler

Price $481.11
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Suzuki SJ413 with coupler Nitro Lunch Box Locker - Automatic Locking Differential

Recommended: 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:

Can be used with front axle kit AXSUZSAM-26F

Picture is of a generic LunchBox Locker, parts included may vary depending on application.

This model reuses the stock side gears.

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-SUZUKI For Maintenance.

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.




Differential: Suzuki SJ413

Axle Splines: Reuse side gears

Manufacturer: Nitro Gear & Axle

Material: 9310 Steel


1985-1995 Suzuki Samurai -Rear

1984-1995 Suzuki Samurai SJ413 (Front or Rear)

1984-1998 Suzuki Jimny SJ413 (Front or Rear)

1984-1998 Suzuki Sierra SJ413 (Front or Rear)

1984-1998 Holden Drover SJ413 (Front or Rear)

1984-1998 Suzuki Caribbean SJ413 (Front or Rear)

1986-1998 Suzuki Santana SJ413 (Front or Rear)

1996-1998 Maruit Gypsy King (Front or Rear)

1990-1998 Suzuki JA11 & JA12 (Japan) (Rear)


*All Nitro Gear & Axle brand products are warrantied to be free of manufacturer defects for the specified period. Warranty requests must be made by the original purchaser and submitted by the dealer purchased from. Any parts sent for warranty consideration must be pre-approved and shipped prepaid freight to our facility with copy of RGA for our inspection & determination. We will not pay for labor, shipping cost, loss of revenue or perishable goods, commercial losses, costs of telephone calls, shipping or general inconvenience. This is our only warranty expressed or implied. Unauthorized warranty returns may be refused. Warranty generally covers MFG defects in material or workmanship. Abuse, overloading, improper lubrication, misuse, commercial or competition use voids warranty. Normal characteristics are not warrantable, such as Gear whine. Minor cosmetic flaws, dings, burrs from shipping or manufacturing, are not considered defect, it is installer responsibility to address these at time of install. Customer is responsible for shipping charges if warranty is granted. Warranty is for the original purchaser/user, is not transferable. Warranty covers one replacement or credit solely at our discretion. Warranty determinations are at our sole discretion.

In addition to the above conditions, see special notes for these products:

Ring & Pinion - Warrantied against manufacturing defects. 2 years from date of purchase. Must provide set-up specs.

Chromoly front Axles, Excalibur Joints, 30/30 Birfield kits - Warrantied against manufacturing defects for the life of the vehicle. These products are also covered for Breakage. The Shaft / joint must be BROKEN. Wear, twisting, bending are not warrantable. Damages caused by failure of other parts are not warrantable, for example broken U-joint (other than Nitro Excalibur) causing damage to Axle ears.

Rear Chromoly Axles - Warrantied against manufacturing defects for 5 years. These products are also covered for Breakage. The Shaft must be BROKEN. Worn, twisted, or bent axles are not warrantable.


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:


Box Weight: 6 lb

Box Dimensions: 1 x 1 x 1 in

Shopper Approved Review

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