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Dexter Genuine Brake Rebate

On qualifying Dexter Genuine Drum Brake purchases.

Up to $50 back

Dexter Genuine drum brake rebate: up to $50 back, September 15 through November 14, 2026.

Dexter® 12 ¼ Electric Brake Assemblies

Genuine Dexter® 12-1/4" electric brake assemblies from Southwest Wheel® are complete OEM backing-plate units for heavy-duty trailer axles from 7,200 lbs. through 15,000 lbs. Each assembly includes the backing plate, shoes and lining, magnet, springs, and hardware so you can bolt it to the axle flange and connect the wiring without rebuilding the old brake.

Dexter® 12-1/4" Electric Brake Assemblies. Sold as left-hand or right-hand units. Genuine Dexter® OEM replacement parts for 12-1/4" electric drums.

Key Features

  • Brand: Dexter® Axle
  • Type: Complete 12-1/4" electric trailer brake assemblies
  • Sizes: 12-1/4" x 2-1/2", 12-1/4" x 3-3/8", 12-1/4" x 4", and 12-1/4" x 5"
  • Capacity: 7,200 lbs. to 15,000 lbs. trailer axles
  • Styles: Standard electric and Nev-R-Adjust® / forward self-adjusting assemblies
  • Hand: Left-hand and right-hand assemblies sold separately
  • Construction: Made in the USA Dexter® OEM quality with stamped or cast backing plates, depending on axle series
  • Use: Replace worn 12-1/4" electric brakes on Dexter 8K, 10K, 10K HD, 12K, and 15K axles

Match the assembly to your drum width, axle rating, bolt pattern, and left or right side. Replace brakes in pairs on the same axle so both wheels apply evenly. Confirm magnet kit and shoe part numbers before ordering, because 3-3/8", 4", and 5" drums are not interchangeable.

Questions about 12-1/4" Dexter electric brake fitment? Call our trailer experts at 1-800-866-3336.

Browse more Dexter® Complete Brake Assemblies.

12 1/4" x 2 1/2" Electric Manual Adjust Brake Assembly (7.2K) Left Hand - K23-428-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 2 1/2" electric manual adjust brake assembly (7.2K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $482.48
12 1/4" x 2 1/2" Electric Manual Adjust Brake Assembly (7.2K) Right Hand - K23-429-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 2 1/2" electric manual adjust brake assembly (7.2K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
30% Off Inventory Reduction Sale Auto Applied at Checkout
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $482.48
12 1/4" x 4" Electric Forward Self-Adjust Brake Assembly (10K heavy duty) Left Hand - K23-438-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 4" electric forward self-adjust brake assembly (10K heavy duty).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $451.99
12 1/4" x 4" Electric Forward Self-Adjust Brake Assembly (10K heavy duty) Right Hand - K23-439-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 4" electric forward self-adjust brake assembly (10K heavy duty).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
30% Off Inventory Reduction Sale Auto Applied at Checkout
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $451.99
12 1/4" x 5" Electric Forward Self-Adjust Brake Assembly (12K) Left Hand - K23-442-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 5" electric forward self-adjust brake assembly (12K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $572.23
12 1/4" x 5" Electric Forward Self-Adjust Brake Assembly (12K) Right Hand - K23-443-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 5" electric forward self-adjust brake assembly (12K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $572.23
12 1/4" x 5" electric forward self-adjust brake assembly (15K) Left Hand - K23-446-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 5" electric forward self-adjust brake assembly (15K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $574.99
12 1/4" x 5" electric forward self-adjust brake assembly (15K) Right Hand - K23-447-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 5" electric forward self-adjust brake assembly (15K).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $574.99
Dexter® 12 1/4" x 3 3/8" Left Hand 8,000 lbs. Electric Backing Plate - K23-432-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric manual adjust brake assembly (8K). 
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $397.99
Dexter® 12 1/4" x 3 3/8" Left Hand Electric Forward Self-Adjust Brake Assembly - K23-450-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric forward self-adjust brake assembly (9-10K general duty).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
30% Off Inventory Reduction Sale Auto Applied at Checkout
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $360.99
Dexter® 12 1/4" x 3 3/8" Left Hand Forward Self-Adjusting 8,000 lbs. Electric Backing Plate - K23-434-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric forward self-adjust brake assembly (8K).
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $183.27
Dexter® 12 1/4" x 3 3/8" Right Hand 8,000 lbs. Electric Backing Plate - K23-433-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric manual adjust brake assembly (8K). 
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $397.99
Dexter® 12 1/4" x 3 3/8" Right Hand Electric Forward Self-Adjust Brake Assembly - K23-451-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric forward self-adjust brake assembly (9-10K general duty).  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $360.99
Dexter® 12 1/4" x 3 3/8" Right Hand Forward Self-Adjusting 8,000 lbs. Electric Backing Plate - K23-435-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Complete 12 1/4" x 3 3/8" electric forward self-adjust brake assembly (8K).
(Images, descriptions, volume discounts, find out more...)
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $183.27
Dexter® Dust Shield for 9-10K GD Brakes 7 Hole mounting - 036-115-21Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
Dexter® Dust Shield for 9-10K GD Brakes 7 Hole mounting. Dx Part No Quantity Description 036-115-2
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Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $53.20
Dexter® Left Hand 12 1/4" x 3 3/8" Electric Brake Assembly - K23-448-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
 Complete 12 1/4" x 3 3/8" electric manual adjust brake assembly.  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
30% Off Inventory Reduction Sale Auto Applied at Checkout
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $288.99
Dexter® Right Hand 12 1/4" x 3 3/8" Electric Brake Assembly - K23-449-00Made In The USA
$9.99  FedEx  Flat Rate Shipping Per Order
Made In The USA
  Complete 12 1/4" x 3 3/8" electric manual adjust brake assembly.  Dx Part No Quantity Description
(Images, descriptions, volume discounts, find out more...)
30% Off Inventory Reduction Sale Auto Applied at Checkout
Fall Promotion! Save 10.7% off this product! Discount auto applied at checkout
Price: $288.99
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