USA Standard Gear

6-Speed Transmission 2nd Gear

$178.99

SKU: ZMZFS6-21

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

Description

The USA Standard Gear ZMZFS6-21 is a 2nd gear component for ZF 6-speed manual transmissions. This specific gear has 31 teeth and is engineered to meet the demands of heavy-duty applications. It is designed as a direct replacement for the original equipment, ensuring proper fit and function within the transmission assembly. This transmission gear is part of USA Standard Gear's commitment to providing reliable drivetrain components. The brand is known for its quality and durability, making this gear a suitable choice for fleet owners and individuals seeking to maintain or repair their vehicle's manual transmission. The gear's construction and tooth count (31) are critical for its performance within the 6-speed ZF transmission system. The USA Standard Gear ZMZFS6-21 is compatible with specific Ford Super Duty models from 1999 to 2001, including the F-250, F-350, F-450, and F-550. This ensures that when properly installed, it will integrate seamlessly with the existing transmission components in these vehicles. The product comes with a 2-year warranty, providing added assurance of its quality and longevity.

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 NumberZMZFS6-21
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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