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Description
Ultima | Rear Brake Wheel Cylinder RHS R/L | Coaster BB21 HZB30 Dyna BU6# 1982–1993 | JB3138Ultima Rear Brake Wheel Cylinder RHS R L (JB3138) for Toyota Coaster BB21 HB30 HZB30 RB20 & Dyna BU6# YU6# 19821993 This Ultima Rear Brake Wheel Cylinder (JB3138) is designed as a high quality, direct OE replacement for the Rear Right Hand Side (RHS) of various Toyota Coaster buses and Dyna light trucks. This part is the **Rear Lower (R L) or Trailing Shoe** cylinder, which is one of two cylinders mounted on the rear drum brake assembly for these
Ultima Rear Brake Wheel Cylinder RHS R/L (JB3138) for Toyota Coaster BB21/HB30/HZB30/RB20 & Dyna BU6#/YU6# 1982–1993
This Ultima Rear Brake Wheel Cylinder (JB3138) is designed as a high-quality, direct OE replacement for the Rear Right-Hand Side (RHS) of various Toyota Coaster buses and Dyna light trucks. This part is the **Rear/Lower (R/L) or Trailing 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 RHS Trailing 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 Right-Hand Side (RHS), Trailing/Lower Shoe.
- Complete Unit: Supplied ready to install with pistons, seals, and boots.
Technical Specifications
- Brand: Ultima
- Part Number (SKU): JB3138
- Type: Brake Wheel Cylinder
- Position: Rear Right-Hand Side (RHS) R/L (Trailing/Lower 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 Right (RHS) R/L |
| Toyota | Dyna | BU6#, YU6# | 1984–1995 | Rear Right (RHS) R/L |
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4.3 ★★★★★
Based on 103 reviews
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Product Reviews
★★★★★ 5
Clear, Stable, and Surprisingly Better Than IKEA
Color: Clear
I didn’t expect to be this impressed by drawer organizers, but the Vtopmart 25 PCS Clear Plastic Drawer Organizers really delivered. The non-slip silicone pads actually work — once placed, the trays don’t slide around at all, even when opening and closing drawers frequently. That alone makes a huge difference in daily use.
What I love most is how much space they save while keeping everything clearly visible. The clear plastic makes it easy to find what I need at a glance, and the variety of sizes lets me customize each drawer instead of forcing everything into awkward layouts. All the organizers have a solid, usable depth, so items don’t tip over or feel cramped.
Cleaning is effortless — a quick wipe and they look new again. Compared to IKEA organizers I’ve used before, these feel more practical, easier to maintain, and honestly more flexible. Add in the great price for a 25-piece set, and this feels like one of those simple purchases that quietly makes everyday life more organized and less frustrating.
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Reviewed in the United States on February 23, 2026
★★★★★ 5
Keeps things organized
Color: Clear
These are worth buying. They can store so many things. We are using it for our vanities, and they work amazingly. They are super sturdy, and the clear plastic gives them a clean look. These are very helpful to have.
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Reviewed in the United States on April 5, 2026
★★★★★ 5
nice set
Color: Clear Black
I bought this set to organize a messy desk drawer and it made a huge difference right away. Having multiple sizes in one pack is what really makes this set useful. I was able to customize the layout instead of trying to force everything into a few fixed compartments.
The trays feel sturdy enough for everyday use and the clear design makes it easy to see everything at a glance. I used them for things like pens, paper clips, chargers, and random small items that usually get lost, and now everything actually has a place.
They also don’t slide around much once placed, especially if the drawer is fairly full, which I appreciated. Setup took just a few minutes and instantly made the space look cleaner and more put together.
If I had to note anything, the plastic is lightweight, so it is not heavy duty, but for organizing office supplies it works perfectly fine.
Overall, a really practical set that helps you stay organized without overthinking it.
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Reviewed in the United States on April 14, 2026
★★★★★ 4
Great organizers!
Color: Clear
This is a really practical organizer set. I used it in my bathroom and nightstand drawers, and it helped clean everything up fast.
The different sizes are the best part—you can mix and match depending on what you’re storing.
Only reason I’m giving 4 stars is because the plastic isn’t super heavy-duty, but it’s still perfectly fine for everyday use.
Good value for the amount you get.
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Reviewed in the United States on April 8, 2026
★★★★★ 5
Nice drawer organizers with a lot of versatility.
Color: Clear
I bought these to organize my desk drawer because it seems like I can never find anything I'm looking for without taking everything out first,which is always a pain,so I thought why not try a set of drawer organizers.Talk about night and day,these things keep all my stuff tidy and easy to find now,it's great!
The plastic doesn't feel cheap either and the different sizes are very versatile,they also come with enough rubber feet for all the containers,though you do have to peel and stick them on yourself,but it's easy and the adhesive feels very strong.
I would definitely recommend these if you're looking for some great containers to get things more organized.
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Reviewed in the United States on February 23, 2026