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Item #:
40709681
Sonnax 28821-10K Powerglide Smart-Tech Ratio-Style Servo Kit
Item #:
40709681
STD 11636263
Price Details
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*All items will import from US
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Imported from USA store
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Only 12 items left in stock.
Order now and get it around Friday, August 14
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Sonnax Smart-Tech® ratio-style servo kit is a revolutionary part that conquers the pin bias effect once and for all, making this the ultimate choice for running Powerglides in ever more extreme applications.
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Product Details
- Sonnax Smart-Techratio-style servo kit 28821-10K is a revolutionary part that conquers the pin bias effect once and for all, making this the ultimate choice for running Powerglides in ever more extreme applications. The unique design has the same apply area as the OE Powerglide servo, but increased release area so the servo is hydraulically released like other modern servos such as the C-4, C-6 and 4L60.Contents: Servo Assembly; Cover Gasket; Case-to-Cover O-Ring; Servo Pin Seals (2)PTFE, 1 Extra; Primary Piston Seals (2)PTFE; Return Spring; Cover Bolts (3);
| Brand | Sonnax |
| Height | 6.5 in (16.5 cm) |
| Weight | 2.13 lb (970 grams) |
| Model | 28821-10K |
| Has written warranty | No |
| Items included | Servo Assembly, Cover Gasket, Case-to-Cover O-Ring, Servo Pin Seals (2)PTFE, 1 Extra, Primary Piston Seals (2)PTFE, Return Spring, Cover Bolts (3) |
| Color | Off-White |
| Pieces | 1 |
Product Description
About This Item
Product Description: Upgrade your OE Powerglide transmission with the Sonnax 28821-10K Smart-Tech Ratio-Style Servo Kit. This high-quality kit is designed to enhance the performance and durability of your transmission, delivering a smoother and more efficient gear shifting experience. The Sonnax Smart-Tech Ratio-Style Servo Kit features advanced engineering and precision machining to ensure optimal performance. It is compatible with OE Powerglide transmissions, making it a perfect fit for your vehicle. Designed with quality in mind, this servo kit is made from top-grade materials that are built to withstand the demands of high-performance applications.
It is engineered to provide improved holding capacity and apply valve release characteristics, resulting in quicker and crisper shifts. Installing the Sonnax 28821-10K Smart-Tech Ratio-Style Servo Kit is a breeze, thanks to its straightforward installation process. Simply follow the included instructions and you'll be able to enjoy the benefits of this upgraded servo kit in no time. Don't compromise on performance and reliability. Upgrade your OE Powerglide transmission to its full potential with the Sonnax 28821-10K Smart-Tech Ratio-Style Servo Kit.
Place your order today and experience smoother and more efficient gear shifting like never before.
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Customer Questions & Answers
-
Question:
What is the pin bias effect?
Answer: The pin bias effect is an improper apply/release ratio in the OE Powerglide servo design, resulting in burnt bands, broken parts, and inconsistent operation. -
Question:
How does the Sonnax Smart-Tech® ratio-style servo kit solve this issue?
Answer: The Sonnax Smart-Tech® ratio-style servo kit has a unique design that has the same apply area as the OE Powerglide servo, but increased release area for hydraulic release, effectively conquering the pin bias effect. -
Question:
Is the Sonnax Smart-Tech® ratio-style servo kit suitable for extreme applications?
Answer: Yes, the Sonnax Smart-Tech® ratio-style servo kit is the ultimate choice for running Powerglides in ever more extreme applications.
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Pros
- Improves shifting performance
- Easy to install
- Durable construction
- Enhances vehicle efficiency
- Compatible with OE Powerglide
Cons
- Installation instructions could be clearer.
Platform Trust & Buyer Confidence
MA
Mohammad
Verified buyer
“Excellent quality and original too,when ubuy send original things I will appreciate that ,I very satisfied thank you”
23 July 2026 · via Trustpilot
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Chitra
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“The order and delivery progress was communicated very well. Package arrived within the estimated time. Products arrived as expected in good condition.”
22-Jul-26 · via Trustpilot
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kund
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“Good supply of products. Safe payment methods, and shipment worldwide! Genuine products.”
23-Jul-26 · via Trustpilot
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Onesi
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“Was my first time buying a product from Ubuy, but I found it so helpful. This is reliable. Gonna place a new order!”
22 July 2026 · via Trustpilot
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“Ubuy is a great online platform to buy stuff. Reliable, fast delivery time and great value for money. I've been using Ubuy online shopping platform for three years now and will continue to do so.”
23 July 2026 · via Trustpilot
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STD 11636263
Order now and get it around Friday, August 14
This item is not restrict in my country.(Please click on above link if this item is not restrict in your country, So our team will review and allow.)
QTY:
Only 12 items left in stock.
Secured transaction
PCI DSS compliant and ISO 27001:2022 certified, with encrypted payments and full buyer protection on every order.
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Fastest cross-border delivery
Features & Benefits
- Revolutionary part that conquers the pin bias effect
- Ultimate choice for running Powerglides in extreme applications
- Same apply area as OE Powerglide servo
- Increased release area for hydraulic release
- Conquers issues with burnt bands, broken parts, and inconsistent operation
- Improves band failures, input shaft failures, and staging issues
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