The Beast Sun Gear Shell 42298B for GM 700R4 & 4L60E | WIT Transmission Parts
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Description
xElevate your GM overdrive transmission with The Beast sun gear shell (Part #42298B). This heavy-duty upgrade is heat-treated and built from thicker steel than factory shells, delivering improved rigidity for rebuilds and performance applications. Paired with an updated nylon washer, it supports smoother operation and helps reduce common shell weaknesses that can appear during high-load use.
Designed to fit a wide range of GM transmissions, The Beast sun gear shell works in both washer-style and Torrington bearing units. It’s compatible with the 700R4, 4L60, 4L60E, 4L65E, 4L70E, and 4L75E families and covers model years from 1982 up to 2013. Whether you’re restoring a classic street machine or building a tougher daily driver, this component is positioned as a robust upgrade to help you pursue reliability during rebuilds, upgrades, or performance-oriented builds.
Key benefits and why it matters
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Heavy-duty heat-treated construction
Increased strength to endure higher transmission stresses during rebuilds and performance use. -
Thicker steel than factory shells
Enhanced rigidity to help maintain gear alignment under load. -
Updated nylon washer
Durable sealing and reduced wear during operation. -
Helps prevent shell failure
Aimed at mitigating common failure modes observed in factory units. -
Compatibility with washer-style and Torrington bearing units
Flexible use across transmission variations within the family. -
Ideal for rebuilds, upgrades, and performance applications
A practical option for both restoration projects and upgraded builds.
Fitment and notes
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Compatible transmission series
700R4, 4L60, 4L60E, 4L65E, 4L70E, 4L75E (and related variants listed in the interchange data). -
Production year range
1982 through 2013 model years of applicable transmissions. -
Interchange numbers
A74624A, 42298B, NTP-51810B. -
Usage reminder
Please verify fitment by transmission model and application before ordering.
Intermixing this sun gear shell into a rebuild can support a sturdier core for rebuilds and performance applications. While it cannot guarantee outcomes, the upgrade aligns with common-sense durability enhancements observed in high-stress rebuild scenarios. For builders and enthusiasts, The Beast adds a tangible option to pursue more confidence during assembly and testing phases.
FAQ
Q: What is The Beast sun gear shell?
A: The Beast sun gear shell is a heavy-duty upgrade for GM 700R4 and 4L60E transmissions, designed to resist failure during rebuilds and high-load use.
Q: Which transmission models and years does it fit?
A: Compatible with 700R4, 4L60, 4L60E, 4L65E, 4L70E, and 4L75E from 1982 up through 2013.
Shipping & Return
xReturns Policy
You may return most new, unopened items within 30 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
If you need to return an item, simply login to your account, view the order using the "Complete Orders" link under the My Account menu and click the Return Item(s) button. We'll notify you via e-mail of your refund once we've received and processed the returned item.
Shipping
We can ship to virtually any address in the world. Note that there are restrictions on some products, and some products cannot be shipped to international destinations.
When you place an order, we will estimate shipping and delivery dates for you based on the availability of your items and the shipping options you choose. Depending on the shipping provider you choose, shipping date estimates may appear on the shipping quotes page.
Please also note that the shipping rates for many items we sell are weight-based. The weight of any such item can be found on its detail page. To reflect the policies of the shipping companies we use, all weights will be rounded up to the next full pound.
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