Drivetrain› Manual Transmissions and Components

USA Standard Gear

Manual Transmission Bearing and Seal Kit

$142.99

SKU: ZMBK137

Special Order
Free Shipping over $200
$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The USA Standard Gear ZMBK137 is a manual transmission bearing and seal overhaul kit. It is designed for 5-speed transmissions and includes a 15mm wide single ball front counter shaft bearing. The kit features a smooth case design without ribs around the bell.
Show original supplier description
The USA Standard Gear ZMBK137 is a manual transmission bearing and seal overhaul kit, specifically designed for 5-speed transmissions. This kit includes essential components for rebuilding the bearings in your transmission, offering a reliable solution for worn-out parts. Key features include a 15mm wide single ball front counter shaft bearing for smooth operation and a smooth case design without ribs around the bell, which contributes to overall performance and reliability. This comprehensive kit is sold as a complete package, eliminating the need to source additional parts during your project. The kit aims to ensure you can get back on the road without any issues, providing confidence in both fit and performance. USA Standard Gear has a long-standing reputation, offering a robust lineup of OEM and aftermarket manual transmission components for over 50 years, catering to vehicles from the 1960s to more recent models. This specific kit is compatible with several Mazda vehicles, including the 1979-84 Mazda B2000, 1982-84 Mazda B2200, 1979-80 Mazda RX-7, and 1979-1982 Mazda 626.

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 NumberZMBK137
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.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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