Zumbrota Drivetrain

NP231J Narrow Input Bearing Kit

$283.89

SKU: ZTBK231JA

In Stock
In Stock
Ships by Aug 31
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The USA Standard Transfer Case NP231J Narrow Input Bearing Kit, by USA Standard Gear, is a comprehensive solution for rebuilding or maintaining the NP231J transfer case. This kit includes all necessary bearings, gaskets, and seals to ensure proper function and longevity. It specifically addresses the need for a 16 mm wide input bearing and a 75 mm outer diameter rear mainshaft bearing, crucial components for the NP231J (New Process) transfer case. Designed for 2002 and newer Jeep Liberty models, this kit provides the specific parts required for these applications. Compatibility is key in drivetrain components, and this bearing kit is tailored to ensure a precise fit and optimal performance for the specified vehicles. This bearing kit is part of Zumbrota Drivetrain's offerings, known for providing quality drivetrain components. The brand USA Standard Gear emphasizes reliable parts for various automotive applications.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

Fitment Guaranteed

Don’t gamble
on fit.

Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

Available on iOS & Android

Specifications

BrandZumbrota Drivetrain
Part NumberZTBK231JA
CategoryDrivetrain

We’re here — turning wrenches, just like you.

Call us, follow along, or come say hi.

Buy with Confidence

Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

View Full Return Policy

Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

View Full Shipping Policy