SKU: 67363233342

B&M Shift Improver Kit - GM TH2004R Transmissions - 35265

$80.00 $88.89
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Ships within 48 hours · Estimated delivery Jul 24 - Jul 29

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Description

B&M Shift Improver Kit - GM TH2004R Transmissions - 35265Overview: B&M Shift Improver Kit for 1981 1990 Chevrolet, Buick, Olds, Pontiac and GMC TH 200 4R transmissions, recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance

Overview:

B&M® Shift Improver Kit™ for 1981-1990 Chevrolet, Buick, Olds, Pontiac and GMC TH-200-4R transmissions, recalibrates your automatic transmission for optimum performance and extended life! Select the mode that best suits your application Provides crisp shifts on any stock automatic transmission Eliminates shift overlap and excess wear on clutches and bands due to slippage The B&M Shift Improver Kit the easiest way to get the stout performance you've always wanted out of your automatic transmission - and you get two modes of performance to select from: Heavy Duty, or Street/Strip. It's our least expensive and simplest to install kit. All you need are some hand tools! In the space of an afternoon, you can turn your transmission into a B&M-tuned unit! Ask the thousands of satisfied customers that have installed one in their transmissions! STAGE 1. HEAVY DUTY Firm positive shifts without loss of driver comfort for improved performance in all street vehicles. Recommended for regular passenger vehicles. STAGE 2. STREET/STRIP Provides positive shifts for high performance street use or for competitive events. This level is for the enthusiast who wants the hardest, quickest possible.

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
1985 - 1989 Buick Electra Estate Wagon
1981 - 1984 Buick Electra
1981 - 1984 Buick LeSabre
1985 - 1990 Buick LeSabre Estate Wagon
1985 Buick LeSabre Limited
1985 Buick LeSabre Custom
1985 Buick LeSabre Collector's Edition
1981 - 1983 Buick Estate Wagon
1982 - 1987 Buick Regal
1985 Cadillac Commercial Chassis
1981 - 1984 Cadillac DeVille
1981 - 1986 Cadillac Fleetwood Brougham
1981 - 1986 Cadillac Fleetwood Brougham d'Elegance
1984 Cadillac Fleetwood
1987 - 1990 Cadillac Brougham
1981 - 1990 Chevrolet Caprice
1985 Chevrolet Caprice Classic
1982 - 1987 Chevrolet El Camino
1981 - 1985 Chevrolet Impala
1982 - 1983 Chevrolet Malibu
1982 - 1988 Chevrolet Monte Carlo
1984 - 1987 GMC Caballero
1981 - 1984 Oldsmobile 98
1985 - 1987 Oldsmobile Cutlass Salon
1982 - 1984 Oldsmobile Cutlass Calais
1982 - 1983 Oldsmobile Cutlass Cruiser
1982 - 1987 Oldsmobile Cutlass Supreme
1988 Oldsmobile Cutlass Supreme Classic
1988 Oldsmobile Cutlass Supreme Classic Brougham
1981 - 1985 Oldsmobile Delta 88
1981 - 1990 Oldsmobile Custom Cruiser
1982 - 1985 Oldsmobile Toronado
1981 - 1986 Pontiac Bonneville
1981 Pontiac Catalina
1989 Pontiac Firebird Trans Am
1989 Pontiac Firebird Trans Am GTA SE
1983 - 1987 Pontiac Grand Prix
1982 - 1986 Pontiac Parisienne
1987 - 1989 Pontiac Safari
1985 - 1987 Oldsmobile Cutlass

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: 67363233342

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4.4 ★★★★★
Based on 13 reviews
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Product Reviews
M
Verified Purchase
Melissa
San Leandro, US
★★★★★ 1
Hot hot hot. Side sleepers will hate it
At first touch, these are the coldest pillowcases I own … but only for seconds. Once you actually lay on them, within seconds they adjust to your body temp, the heat feels trapped, my head begins to feel hotter than before I laid down - which has in turn caused me loathe these pillow cases. I hate that I have missed the return window. Would never buy again, would never recommend. My satin ones aren’t even this hot! I gave them the good ole 30-day try. Side sleepers - if you are like me and sleep on your side with arm tucked under pillow - flipping this pillow over in hopes of a cold side - forget it, it’s already hot from your arm.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on August 29, 2025
T
Verified Purchase
Trevor Barton
New York, US
★★★★★ 2
Ehh
Pills up rather quickly
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 7, 2026
D
Verified Purchase
Dorothy Gilbertson
Battle Creek, US
★★★★★ 3
Nice but dissapointing
So it sometimes stays cool but if it’s under a blanket and you have your body on it at all it will get warm but the spots you don’t use will get cool sometimes. I am very disappointed in the material though because it’s like my dry skin scratched the pillow case all over which makes me question it and I don’t think I would buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 15, 2025
P
Verified Purchase
Precise Disarray
Pawtucket, US
★★★★★ 5
super smooth, silky, stays comfortable feeling. DO NOT DRY or wash with heat
Color: Blue, Size: Queen (U.S. Standard), Set name: Stretchy and Soft, Color: Blue, Size: Queen (U.S. Standard), Set name: Stretchy and Soft
I'm impressed. I have used cooling pillow cases before, and found them effective, but the cooling material have always been on just one side. These are 100% cooling material. The material is super smooth and silky feeling. It is great feeling against hair and skin (even better than my old polyester satin I was using before cooling pillowcases). The material is cool, and does not seem to get hot hot. The pillow cases are super stretchy with a small hidden zipper. They grab onto the pillow and dont loosen up. Makes my pillow look neat and clean, not sloppy from loose material. I can even have two pillows stacked and somehow despite being a smooth material, the pillows dont just slide off each other. The cooling aspect works by not trapping heat, not allowing heat to get to the pillow and hold it there. So yeh, the pillow case will feel warm eventually but if you have a fan, or AC, or flip the pillow, then it is is truly cool. Otherwise in my experience when I use a pillow without this, the pillow just gets hot, stays hot, and even with flipping it feels hot.. because the pillow itself has trapped the heat for remainder of night. Yuck. One thing to know and this is very important-- as I learned the hard way-- DO NOT DRY IN DRYER. DO NOT WASH IN HOT WATER. Heat will destroy the material ability to feel and stay cool. Do you want a regular heat trapping pillow case? Then go ahead and dry these in the dryer a few times and you will have a regular pillow case. HOw do I know? I bought these to replace another set (different brand, same idea, same instructions that I failed to remember). I always dried them in the dryer, and one night after having gloriously cool pillows, I noticed that my pillow was HOT night after night. It was then when looking for another set of pillow cases that I learned that they cant be exposed to heat like that. SO PLEASE, just AIR DRY. And so, after I got these and put them on my pillows, I had a much better nights rest. I remember thinking that I wasnt waking to rearrange my pillows. They were just comfortable all night long. Sure, I'd love an even colder pillow, but our room is on the warm side. But at least I wasnt noting the hot hot pillows anymore.
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Reviewed in the United States on June 6, 2021
G
Verified Purchase
Grace
New York, US
★★★★★ 5
A must try for hot sleepers!
Color: Blue, Size: Queen (U.S. Standard), Set name: Silky, Color: Blue, Size: Queen (U.S. Standard), Set name: Silky
If you are a hot sleeper these pillowcases are for you! Not only are they silky and beautiful, but they are cool to the touch!The Arc-Chill fabric absorbs heat and instantly cools your skin! If you are prone to insomnia, night sweats, give these a try! They come in a 2 pack and have a few different colors to try out. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026

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