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Drivetrain› Automatic Transmissions and Components

Sonnax

U151E/U151F/U250E Boost Sleeve Kit

$107.49 $64.79 Save $42.70

SKU: 27741-01K

Special Order
Special Order
Ships in 4–6 weeks
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

It features a boost sleeve manufactured from highly wear-resistant billet aluminum. This kit is specifically designed for Toyota/Lexus U151E, U151F, and U250E transmissions.
Show original supplier description
The Sonnax Boost Valve Kit (Part No. 27741-01K) is engineered to address excessive wear in automatic transmissions and restore proper hydraulic control. This design aims to prevent issues such as burnt clutch packs, flare shifts, and bind-ups. This valve kit is specifically designed for Toyota/Lexus U151E, U151F, and U250E automatic transmission applications. The kit includes components for the boost valve and boost sleeve, intended to be a direct replacement for worn original parts. Installation instructions are available for download, providing guidance for proper fitting. The product is covered by a 6-month warranty from Sonnax. This component is crucial for maintaining the integrity and performance of the affected transmission systems.

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

BrandSonnax
Part Number27741-01K
CategoryDrivetrain
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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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