USA Standard Gear

NP231 Transfer Case Bearing Kit

$178.89

SKU: ZTBK231

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

Description

The USA Standard Gear NP231 Transfer Case Wide Input Bearing Kit (ZTBK231) is engineered to replace the input bearing in New Process 231 transfer cases, specifically those featuring a 24 mm wide input bearing. The kit is tailored to ensure an optimal fit and reliable sealing, contributing to a robust and dependable transfer case. Installation of this bearing kit is moderately straightforward for individuals experienced with transfer case components and does not require any drilling. However, proper mechanical tools and a solid understanding of transfer case disassembly and reassembly are necessary for best results. This kit is specifically designed for the 1987-1994 Jeep Wrangler YJ models equipped with the NP231 transfer case that features a 24 mm wide input bearing. It is tailored to fit this specific wide input variant and includes all necessary seals for a complete service.

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

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Specifications

BrandUSA Standard Gear
Part NumberZTBK231
CategoryDrivetrain

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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.

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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.

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