SKU: 11139755172

B&M Shift Improver Kit - GM TH400/475 Transmissions - 20261

Sale price$78.70 Regular price$87.45
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Ships within 48 hours · Estimated delivery Aug 4 - Aug 9

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Description

B&M Shift Improver Kit - GM TH400/475 Transmissions - 20261Overview: The B&M Shift Improver kits feature two options to recalibrating your 1988 1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET STRIP set up. Be warned, this will deliver firm positive shifts you will feel, along

Overview:

The B&M® Shift Improver kits™ feature two options to recalibrating your 1988-1994 GM TH400 and TH475 automatic transmissions. First is the HEAVY DUTY set-up, giving you firm positive shifts without loss of driver comfort for improved performance in all street vehicles. This is a great option for performance street driving or towing. The second is our STREET/STRIP set-up. Be warned, this will deliver firm positive shifts you will feel, along with easily chirping the tires when shifting somewhat aggressively. This setting is recommend for high performance street/strip use, or for competitive events when you want the hardest, quickest shifts possible from a shift improver kit.

Features:

  • Perfect for Off-Road, Towing or Street/Strip Use
  • Eliminates Soft and Sluggish Shifts
  • Over 65 Years of B&M Quality
  • Eliminates Shift Overlap
  • Provides Crisp Shifts
  • Easy Installation

Application:

Year Make Model Submodel Engine Size
1988 Chevrolet R20 Custom Deluxe
1988 Chevrolet R20 Scottsdale
1988 Chevrolet R20 Silverado
1988 Chevrolet R20 Suburban
1989 Chevrolet R2500
1989 - 1990 Chevrolet R2500 Suburban
1988 Chevrolet R30
1989 - 1990 Chevrolet R3500
1990 Chevrolet V1500 Suburban
1988 Chevrolet V20 Suburban
1989 - 1990 Chevrolet V2500 Suburban
1988 Chevrolet V30
1989 - 1990 Chevrolet V3500
1988 - 1990 GMC C1500
1988 - 1990 GMC C2500
1988 - 1990 GMC C3500
1988 - 1990 GMC G1500
1988 - 1990 GMC G2500
1988 GMC G3500 Rally
1988 GMC G3500 Rally STX
1988 GMC G3500 Vandura
1988 GMC G3500 Rally Custom
1988 GMC G3500 Magnavan
1988 GMC G3500 Rally Camper Special
1988 GMC G3500 Vandura Special
1989 - 1990 GMC G3500
1988 - 1990 GMC Jimmy
1988 - 1990 GMC K1500
1988 - 1990 GMC K2500
1988 - 1990 GMC K3500
1988 - 1989 GMC P2500
1988 - 1990 GMC P3500
1990 GMC R1500 Suburban
1988 - 1989 GMC R2500
1988 - 1990 GMC R2500 Suburban
1988 - 1990 GMC R3500
1990 GMC V1500 Suburban
1988 - 1990 GMC V2500 Suburban
1988 - 1990 GMC V3500
1988 - 1990 Cadillac Brougham
1988 - 1990 Chevrolet Blazer
1990 Chevrolet C1500 Cheyenne
1990 Chevrolet C1500 Scottsdale
1990 Chevrolet C1500 Silverado
1990 Chevrolet C1500 454 SS
1990 Chevrolet C1500 WT
1988 - 1989 Chevrolet C1500
1988 - 1990 Chevrolet C2500
1988 - 1990 Chevrolet C3500
1988 - 1990 Chevrolet G10
1988 - 1990 Chevrolet G20
1988 - 1990 Chevrolet G30
1988 - 1990 Chevrolet K1500
1988 - 1990 Chevrolet K2500
1988 - 1990 Chevrolet K3500
1988 - 1989 Chevrolet P20
1988 - 1990 Chevrolet P30
1990 Chevrolet R1500 Suburban
1988 Chevrolet R20 Cheyenne

Specs:

Automotive Item Grade High Performance
Brand B&M
California Proposition 65 Chemical Name Cadmium and cadmium compounds
California Proposition 65 Required Yes
Emission Code 5
Gasket Included Yes
Instructions Included Yes
Product Type Automatic Transmission Valve Body Kit
Warning California Proposition 65
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 11139755172

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4.3 ★★★★★
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A
Verified Purchase
Amazon Customer
Natrona Heights, US
★★★★★ 2
Worked for only 4 months. Now produces metal shards. Dangerous
Pros: Can be used with one hand. I bought this to have after surgery that left me without use of one arm for a few months. The light blinks when you need to charge it. Only needs a 2-3 min charge for enough juice to open a can. Cons: IT QUIT CUTTING CORRECTLY AFTER 4 MONTHS. I now have to use both hands to hold it in place to get it to latch on to the can. It also requires a few rotations around the top to cut through the seal, resulting in METAL SHARDS! The metal shards are super sharp and almost invisible. I stabbed myself with one enough to draw blood. This is dangerous as the metal could fall into the food when pouring from the can.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 10, 2026
C
Verified Purchase
Catibbetts
Fort Morgan, US
★★★★★ 1
Can opener
This product does not work well! It actually doesn't work at all!! Will not cut thru can lids at all. Very disappointing to say the least. I purchased to make things easier only to be left not being able to open dinner 😕. Would not recommend to anyone!!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 15, 2026
R
Verified Purchase
Roberta Hallahan
Boise, US
★★★★★ 4
Can opener
It doesn't shut off by itself when done and doesn't shut off when I push the button, so after a while it will shut off but when it wants too after you take it off the can ,like 30 seconds. But I do like the way it cuts, a clean cut and lid removal nice.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 2, 2026
M
Verified Purchase
Mishele
Boise, US
★★★★★ 5
terrible item
it worked a few times and it doesnt work at all! Terrible item!
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Reviewed in the United States on June 7, 2026
M
Verified Purchase
Meek
Belleville, US
★★★★★ 1
Very dangerous metal shavings!!!
Negative stars if I could. This is a very dangerous product. It worked well for a while. But then it quit effectively removing the lid instead I got little tiny shavings of metal around the edge. These shavings of metal go into the food and very dangerous. So this was a waste of money and incredibly dangerous. I am throwing it in the trash today.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 25, 2026

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