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Drivetrain› Automatic Transmissions and Components

B&M

Master Overhaul Kit for TH400 Automatic Transmission

$460.95 $413.95 Save $47.00

SKU: BMM21041

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
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Overview

The B&M Master Overhaul Kit is a transmission rebuild kit for the TH400 automatic transmission. This kit includes clutches, bands, a filter, gaskets, and seals. B&M has been a leader in the automotive aftermarket since the 1950s, specializing in performance transmission products.
Show original supplier description
The B&M Master Overhaul Kit provides all necessary components for a high-performance or racing overhaul of your GM TH400 automatic transmission. B&M has been a pioneer in the automotive aftermarket since the early 1950s, developing specialized products for performance enthusiasts. While it contains essential overhaul components, it is important to note that overhaul instructions and valve body gaskets are not included in this specific kit. The product is designed for use with the GM Turbo-Hydramatic 400 automatic transmission. The B&M 21041 Master Racing Overhaul Kit is compatible with a wide range of GM vehicles equipped with the TH400 transmission. This includes various models from Buick, Cadillac, Chevrolet, GMC, and Oldsmobile spanning from the mid-1960s to the late 1980s and early 1990s, such as the Chevrolet Impala, El Camino, Camaro, and various truck and van models, as well as Buick Skylark, Regal, and Electra, Cadillac DeVille and Fleetwood, GMC Jimmy and Pickup series, and Oldsmobile Cutlass and Delta 88.

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

BrandB&M
Part NumberBMM21041
CategoryDrivetrain
5,000+ Trusted brands
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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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