Sale

USA Standard Gear

M21 & M22 Heavy-Duty Bearing and Seal Kit

$243.99 $243.89 Save $0.10

SKU: ZMBK116HD

In Stock
In Stock
Ships by Sep 1
Free Shipping over $200
$100 Minimum Order
30 Days Return

Description

The USA Standard Gear ZMBK116HD is a comprehensive manual transmission bearing and seal overhaul kit engineered for Muncie M21 & M22 transmissions. The kit includes essential components such as synchronizer rings and features max-load bearings for enhanced durability. Constructed with an aluminum case, this kit boasts a 10-inch long main case and offers either a 10 or 26 spline input. It also features a 1-inch diameter counter gear shaft, two shift levers on the side cover, and one lever on the tail housing, indicative of its robust design. The "Regular" grade type ensures it meets standard performance requirements. This bearing and seal overhaul kit is specifically designed for 4-speed manual heavy-duty transmissions and is compatible with numerous models from 1966-1974, including various Buick, Chevrolet, Oldsmobile, Pontiac, and Bizzarrini vehicles. The kit is backed by a 2-year warranty and is manufactured in the USA.

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 NumberZMBK116HD
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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