Drivetrain› Manual Transmissions and Components

USA Standard Gear

Saginaw Differential Bearing Kit

$113.89

SKU: ZMBK115

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$100 Minimum Order
Non-Returnable Item
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The USA Standard Gear ZMBK115 is a manual transmission bearing and seal kit designed for Saginaw transmissions. It features a cast iron case, a seven-bolt side cover, and a 9.75-inch long main case without overdrive. This kit is suitable for both 3-speed and 4-speed Saginaw transmissions.
Show original supplier description
The USA Standard Manual Transmission Saginaw Bearing Kit (ZMBK115) is engineered to provide essential components for the overhaul and repair of Saginaw 3-speed and 4-speed manual transmissions. This comprehensive kit includes bearings and seals, designed to fit transmissions with a cast iron case, a seven-bolt side cover, and a 9.75-inch long main case that does not feature overdrive. All three shift levers are situated on the side cover for this specific Saginaw transmission configuration. This bearing kit is compatible with a vast array of vehicles from the mid-1960s through the mid-1980s, covering numerous Buick, Chevrolet, GMC, Oldsmobile, and Pontiac car, truck, and SUV models. The extensive application list includes vehicles such as the Chevrolet Camaro, El Camino, Impala, and various C/K series trucks, as well as GMC counterparts, and a wide selection of Buick, Oldsmobile, and Pontiac sedans and coupes. It is crucial to consult the detailed fitment guide to ensure compatibility with your specific vehicle year, make, and model. It is important to note that this kit is sold as a complete set and specifically for Saginaw transmissions fitting the described case and cover specifications. The product details clarify that this kit does not include synchronizer rings. Ensure you verify the transmission model and case type in your vehicle before purchasing to guarantee proper fit and function.

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 NumberZMBK115
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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