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B&M 21041 Transmission Kit, Master Overhaul Kit For TH400

Name: B&M 21041 Transmission Kit, Master Overhaul Kit For TH400
Brand: B&M
Price: 614.99 CAD
Availability: InStock

by B&M

• SKU: ds_BBFT_21041

• Product Type:

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$636.11 $614.99

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B&M 21041 Transmission Kit, Master Overhaul Kit For TH400

Rock Solid Hitch

Solid hitch with serious strength and clean powder coat, heavy to lift, but installs easy and tows perfectly!!

Great Shipping

Shipping was quick and on time - exactly what I needed for my small-block build - would buy again for sure

Perfect Fit Mats

Weatherbeater mats fit my work truck perfectly. Dropped them in and nothing moves. Truly a great upgrade

Sleek Visors

Window visors look incredible and feel durable, install was simple. Zero wind noise on the highway!

Leveling Success

Leveling kit components were well packed. Instructions lacking, but online videos helped. Rides level now and feels planted.

Found Single Lifters

Found single lifter pairs in stock here when others required full sets, fast shipping got me racing again, hell yeah!!

Desert Series Bumper

Rear bumper upgrade looks better than factory plastic. Install was easy, and functionality is miles ahead. Highly recommended.

Lomax Fitment

Tonneau cover fit is excellent. Clear instructions and a smooth install. Delivery to my door was super convenient

Next Day Turbo

Turbo arrived next morning and matched description. Bolted up cleanly and truck is back to full power.

Legend Grille Guard

Husband’s birthday grille guard is rock solid, looks sharp he loves it so much!!! Thanks again

Shipping Protection Helped

Customer service handled a damaged shipment immediately. Refund was painless. I’ll shop here again.

Easy Exhaust Install

Exhaust system installed in two hours on my first try. Perfect fit and the sound is pure joy.

Do you offer wholesale or jobber pricing?

Yes. Wholesale pricing is available for legitimate businesses that provide a valid business number or equivalent proof. Ongoing purchase volume is required to maintain discount eligibility. One-time personal buyers aren’t eligible.

Will this part fit my vehicle?

If a product page clearly lists fitment for your vehicle and the description leaves no reasonable doubt, we’ll cover the cost of return if it doesn’t fit. Exclusions apply if prior modifications cause the issue. When browsing self-serve, you’re responsible for confirming compatibility by checking manufacturer fitment data and notes. If unsure, contact us before ordering and we’ll verify it for you.

Do you offer technical support or installation advice?

We help where possible on a case-by-case basis. Most manufacturers include detailed instructions and tech support contacts. Because our catalog spans hundreds of brands, we can’t provide every torque spec or procedure, but we’ll connect you with the manufacturer if needed.

Do you offer price matching?

We don’t guarantee price matching, but we’re happy to review a legitimate in-stock offer from another Canadian retailer. The comparison must include all costs such as product price, shipping, taxes, and fees, and the item must be identical and available for immediate purchase. We won’t lose money to match unsustainable or out-of-stock pricing.

Can I exchange an item?

Yes. In-store exchanges happen on the spot when stock is available. For shipped orders, the original item must be returned first. Once received and inspected, we can issue a store credit toward the correct part or replacement. We can’t send a second item while the first is still in your possession without payment for both.

Are prices shown before or after tax?

All prices on the site are before tax. GST, HST, or PST is calculated at checkout based on your shipping address..

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Description_ASC	For use on GM Turbo-Hydramatic 400 automatic transmissions
Description_DES	Transmission Kit, Master Overhaul Kit For TH400
Description_INV	MASTER OVERHAUL KIT TH400
Description_EXT	Transmission Kit
Description_KEY	21041; Transmission Kit; B&M; b and m; transmission; manual; automatic; shift kit; improver; transkit; racing; knob; lever; torque converter
Description_FAB	Great for rebuilding
Description_FAB	Instructions Not Included
Description_FAB	Includes Only OEM Valvebody Gaskets
Description_FAB	Complete High Performance or Racing Transmission Overhaul
Description_MKT	These kits include all of the necessary components to rebuild your automatic transmission. OEM style gaskets included. Kits do not include overhaul instructions - please refer to factory shop manual for proper assembly procedures.
Manual Control	Partial
Instructions Included	No
California Proposition 65 Chemical Name	Cadmium and cadmium compounds
California Proposition 65 Required	Yes
Emission Code	5
Gasket Included	Yes
Product Type	Automatic Transmission Master Repair Kit
Warning	California Proposition 65
Brand	B&M
Sale Category	Transmission and Drivetrain
Length	5.4000
Width	11.7000
Height	16.2000
Weight	12.0000