SKU: 92323539357

Ultima | Rear Brake Wheel Cylinder LHS F/U | Coaster BB21 HZB30 Dyna BU6# 1982–1993 | JB3141

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Description

Ultima | Rear Brake Wheel Cylinder LHS F/U | Coaster BB21 HZB30 Dyna BU6# 1982–1993 | JB3141Ultima Rear Brake Wheel Cylinder LHS F U (JB3141) for Toyota Coaster BB21 HB30 HZB30 RB20 & Dyna BU6# YU6# 19821993 This Ultima Rear Brake Wheel Cylinder (JB3141) is designed as a high quality, direct OE replacement for the Rear Left Hand Side (LHS) of various Toyota Coaster buses and Dyna light trucks. This part is the **Front Upper (F U) or Leading Shoe** cylinder, which is one of two cylinders mounted on the rear drum brake assembly for these heavy

Ultima Rear Brake Wheel Cylinder LHS F/U (JB3141) for Toyota Coaster BB21/HB30/HZB30/RB20 & Dyna BU6#/YU6# 1982–1993

This Ultima Rear Brake Wheel Cylinder (JB3141) is designed as a high-quality, direct OE replacement for the Rear Left-Hand Side (LHS) of various Toyota Coaster buses and Dyna light trucks. This part is the **Front/Upper (F/U) or Leading Shoe** cylinder, which is one of two cylinders mounted on the rear drum brake assembly for these heavy-duty commercial vehicles. It fits models from the approximate 1982 to 1993 production range. This cylinder is a vital component in the rear drum brake system, converting hydraulic pressure into the necessary stopping force required by the brake shoes to ensure safe and dependable performance under high load conditions.

Features & Benefits:

  • Direct Fit OE Replacement: Designed to match the fit, form, and function of the original equipment wheel cylinder on the LHS Leading Shoe position.
  • Heavy-Duty Construction: Built for durability and dependable braking performance in bus and light truck applications.
  • Reliable Braking: Ensures accurate hydraulic pressure transfer for consistent and responsive drum braking performance.
  • Corrosion Resistance: Manufactured from durable materials for protection against corrosion and wear.
  • Position Specific: Designed exclusively for the Rear Left-Hand Side (LHS), Leading/Upper Shoe.
  • Complete Unit: Supplied ready to install with pistons, seals, and boots.

Technical Specifications

  • Brand: Ultima
  • Part Number (SKU): JB3141
  • Type: Brake Wheel Cylinder
  • Position: Rear Left-Hand Side (LHS) F/U (Leading/Upper Shoe)
  • Vehicle Models: Toyota Coaster, Toyota Dyna
  • Series: BB21, HB30, HZB30, RB20 (Coaster), BU6#, YU6# (Dyna)
  • Years: 1982–1993 (Approximate range)
  • Use: Minibus / Light Truck

Vehicle Fitment Information

Make Model Series Years Position
Toyota Coaster BB21, HB30, HZB30, RB20 1982–1993 Rear Left (LHS) F/U
Toyota Dyna BU6#, YU6# 1984–1995 Rear Left (LHS) F/U

Important Information

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Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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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: 92323539357

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Kira
Lowell, US
★★★★★ 5
This is the best nursing bag I've purchased so far
Color: C02- Generic Sunflower, Size: Large
I am one of those nurses that "lives" at work so I bring everything that I might possibly need in a twelve hour shift - including my planners, pens, medications, drinks, and toiletries on top of my usual nursing items. I am usually stumbling into work with multiple bags but this one solved that problem. I got the large bag. I looked at it at first and said, "nah, it's not going to be big enough" but as I opened it and started putting my items inside, I couldn't believe how much it holds. It's good quality and the design is beautiful and not blurry or "fake" looking. There are 6 outside pockets and multiple inside pockets for organization. I prefer the handles over the shoulder strap because it's pretty heavy when I load it up but so fst, seems to be good quality and holds up to my needs. It's not a bad price, either. It's comfortable and well made. I will have to come back and post a picture/video during the day.
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Reviewed in the United States on April 11, 2026
C
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Claira
Cuba, US
★★★★★ 5
cute, roomy, good material
Color: A20- Dental, Size: Large, Color: A20- Dental, Size: Large
This is way bigger than what I thought! I would've gotten a medium just cause I'm not sure it'll fit in my locker but I’ll still use it lol! I absolutely L❤️VE this bag and it is so cuteeee! Im a dental assistant so I got the bag with teeth ✨🦷 I have been carrying a dollar general tote bag for work to carry all my stuff. So this is a major upgrade for my work bag! It’s so spacious with lots of pockets. The material feels thick and durable also. Has purse straps and a shoulder strap so you can carry it different ways.
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Reviewed in the United States on December 17, 2025
M
Verified Purchase
Monet Robinson
Whiting, US
★★★★★ 5
Overstuffer Approved
Color: B23- Nurse Black With Leopard Embroidery, Size: Medium
I love this bag. At first I didn’t think it would work for me because of the size and feel of the material but it’s actually pretty sturdy. The outside pockets hold my cell phone, beats earphone case, charger, and car keys perfectly. I carry my stethoscope, thermometer, O2 spot checker, etc, notebook, book, my purse, lotion, and wallet inside. The water bottle pocket on the side is deep and snug enough to fit a ninja travel cup. I bought the smaller size and as an overstuffer, it’s spacious & the zipper is flexible so it covers items that may stick out from the top a little. Great bag for nurses!
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Reviewed in the United States on March 19, 2025
M
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Mom of 4
New York, US
★★★★★ 5
Very spacious
Color: A29- Nurse Tool, Size: Large
I was looking for a spacious bag to carry all of my school supplies and this one is perfect. It’s able to fit both of my large school books, a 5 subject notebook, multiple pocket folder, notecards box, pencil case and my laptop in an interior padded compartment. The padding is a little thin but none the less I didn’t realize it came with one so that was a bonus. It has 3 pockets inside & 3 deep pocket outside on each side of the bag plus the 2 mesh pockets. As you can see the mesh pocket fits my 40 oz tumbler. With all of my items this bag weighs 24lbs and so far so good the straps feel pretty sturdy/durable.
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Reviewed in the United States on November 11, 2024
S
Verified Purchase
S. Brenner
Whiting, US
★★★★★ 4
No shoulder strap despite D rings for same on bag.
Color: C11- Generic Green, Size: Medium
The bag is nice and roomy. Internal and external pockets too. I give the product 4 stars due to the bag having D rings for a shoulder strap but no shoulder strap is included.
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Reviewed in the United States on April 8, 2026

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