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
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Exchange/Return Notes
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SKU: 92323539357

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★★★★★ 5
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Reviewed in the United States on March 8, 2026
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Wolf-Haven
Grantham, US
★★★★★ 5
Perfect for ball demolishers
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The dogs love the chuck it brand. I don’t know what it’s made of but they go crazy over them. Will not play with another ball. Wonder if it’s “laced” with an addictive scent. Have pits. Very durable. Not able to chew to pieces. Last for about 6 months before there is a small break. I keep a back up because when the ball goes missing the house is in chaos. 😆 🤪
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Reviewed in the United States on March 27, 2026
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Tatiana
Birmingham, US
★★★★★ 5
Most durable ball!
Size: Medium
This are my dogs fav ball 😍 they last forever!
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Reviewed in the United States on April 23, 2026
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Nana
Port Orchard, US
★★★★★ 4
Chuckit medium rebound balls
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My 8 month old German shepherd dog loves these balls. They are easy to throw, they bounce great, they are very chewable! She keeps one in her mouth most of the time. It satisfies her need to chew and she does not chew other things. She drops it in the water and lets the hole fill up and drinks that way. The only problem that has caused is suction in her mouth and difficulty in dislodging it for her. However, she would be lost without it!
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Reviewed in the United States on April 19, 2023
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Helena
Whiting, US
★★★★★ 5
These are definitely indestructible
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Both of my dogs can destroy a ball in a matter of minutes if I let them play with them (supervised) as is. Well not with these balls. They are the ONLY ones I have found that are 100% indestructible. Please only let your dogs play with these as a toy when supervised though. They go really far when throwing them, so both dogs get a good amount of running and exercise with these. I also bought these because they have the hole in the middle of the ball which is very important in the event that a dog gets one stuck at the back of their throat. This allows them to breath unlike those without this hold. It's an unlikely event, but as dog owners, we all need to be aware of this and educate ourselves on what to do if this SHOULD happen. This isn't a scare tactic, nor a reflection of this particular brand, it can happen with any type of ball. My two dogs are about 45ish lbs and the size is perfect for them, I don't want anything smaller than this. They love them. There is no annoying squeak. Really easy to wash after use. Some balls take forever to get the slimy saliva off, but these don't.
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