Description
SB3030S25IT-LR - 30/30 LONG ROD INTRX SPRING BRAKE
PART NUMBER(S):
Fleet Products: SB3030S25IT-LR | OE: 3030S25IT-LR, STD303025IT | Automann: 170.3030S25ITLR
DESCRIPTION:
Model: MGM INTRX 30/30 Long Rod
Vehicles: Freightliner, Kenworth, Peterbilt, International, Mack, Volvo, Western Star, and compatible commercial trailers
• Chamber Size: 30/30 (Standard Stroke)
• Stroke: 2.5"
• Push Rod Length: 17.25" (18" variant for Intraax/Vantraax compatibility)
• Push Rod Diameter: 5/8"-18 UNF
• Port Size: 3/8"-18 NPT (dual ports – service and emergency)
• Port Orientation: Inline with mounting studs
• Mounting: 2 x Studs, 5/8"-11 UNC, 1.65" Height
• Stud Spacing: Approx. 4.75" center-to-center
• Chamber Height: 9.25"
• System Integrity:
– Dual-diaphragm sealed spring chamber
– MGM INTRX contamination protection (integral breather tube)
– Epoxy-coated corrosion-resistant housing
– Integral release bolt
– Polymer push rod guides
– Externally stored release bolt
• Performance:
– Meets FMVSS-121 and SAE J1469 requirements
– High-cycle durability
– Long-life spring and sealed system for severe service environments
• Technologies:
– Stroke Alert compatibility
– Tamper-resistant spring housing
– Fully threaded long push rod
– Square port bosses for ease of plumbing
Applications:
Engineered for drive and trailer axles equipped with Hendrickson Intraax and Vantraax air suspensions. Ideal for severe-duty and high-cycle fleet operations requiring a long push rod 30/30 spring brake chamber with sealed INTRX design.
CROSS-REFERENCE(S):
SB3030S25IT, STD303025IT, SB3030S25IT-LR, 3030S25IT-LR, 3030INTRX25ITLR, 3431956, 170.3030S25ITLR, R955209, K121572, E-11801, AS1144, P3030INTRX25ITLR, 701077, KN31004, 90557161, 5050-3030INTRX25LR, 650-3030INTRX25LR, RA3030INTRX25LR, 7-3030INTRX25LR, S-3030INTRX25ITLR, SB3030INTRX25ITLR, 3230555, 3230051X, NT3030ELS80, 3030-TS, GC3030L, SB3030LTPX, R873030C, INT3030C-2, ZAJ3230051, 991071C, 55543431051, 85132758, 2830645, 4320030080, 3030100001, 179.SB3030SLX, FP3030LR, RF3030LR, CWBWHNT3030ELS80, UP3030LR, ABPN42A33030C3D, 3030-100, E3030LR, 3030-SLPA cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.
IMPORTANT INSTALLATION NOTES:
✔ Block vehicle wheels securely before servicing brake system
✔ Fully depressurize air system prior to removal or installation
✔ Use OE clamp band or mount studs, torque to 35–40 ft-lbs (or per OEM)
✔ Route emergency and service lines correctly; confirm port alignment
✔ Push rod may require trimming or alignment depending on axle
✔ For Intraax/Vantraax applications, verify 25" rod length match
✔ Calibrate Stroke Alert system if present (e.g., MGM NP Kit #9015050)
✔ Verify chamber angle clearance—rotate clamp 90° if needed
✔ Test system for air leaks and confirm full actuation post-installation
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