OEM-spec 3030S300K Type 30/30 Spring Brake Chamber Long Stroke | OTR Style

OEM-spec 3030S300K Type 30/30 Spring Brake Chamber — Long Stroke, Sealed LS

Part number 3030S300K is an OEM-spec replacement Type 30/30 combination spring brake chamber in the long-stroke sealed (LS) configuration. Designed for Class 6–8 commercial trucks, heavy-duty semi-trucks, and trailer air brake systems. This is a combination service and spring (parking/emergency) brake chamber. Stocked at AIM Rentals in Kelowna, BC — ships Canada-wide.

Specifications

• Part Number: 3030S300K
• Type: 30/30 Combination Spring Brake Chamber
• Stroke Type: Long Stroke (3.00”)
• Brake Type: Disc/Service + Spring
• Service Size: Type 30
• Spring Size: Type 30
• Push Rod Length: ~11.00”
• Port Thread: 2x NPT 3/8”
• Bolt Thread: 5/8”-11 UNC
• Configuration: Sealed LS (contaminant-resistant)

Fitment

Fits Class 6–8 commercial trucks, heavy-duty semi-trucks, and trailer air brake systems requiring Type 30 service and Type 30 spring brake chambers.

Cross-References

• OTR 3030S300K
• BTS-3030LS
• OTR3030SB
• OTR3030SBLS

FAQ

What is a Type 30/30 brake chamber?

A Type 30/30 combination chamber includes both a service brake diaphragm (Type 30) and a spring brake chamber (Type 30) in a single unit, used for service braking and parking/emergency braking.

What is the stroke length?

This chamber is the long-stroke (LS) version with 3.00” stroke, providing additional stroke capacity compared to standard Type 30.

Ships Canada-wide?

Yes, from Kelowna BC.

Is this a genuine OTR part?

This is made to OTR OEM-spec standards, matching the 3030S300K configuration. OTR is a recognized aftermarket brake chamber brand for commercial trucks.