Description
SB3030S3000 - 30/30 LONG STROKE SPRING BRAKE
PART NUMBER(S):
Fleet Products: SB3030S3000, 3030LS | OE: S3000, LP3030, 3030S3000 | Automann: 170.3030LS, 170.3030LS3000
DESCRIPTION:
Model: 30/30 Long Stroke Spring Brake Chamber
Vehicles: Freightliner, Kenworth, Peterbilt, International, Mack, Volvo, Western Star
• Chamber Size: 30/30 (Long Stroke)
• Stroke: 3.0" (FMVSS-121/SAE J1469 Compliant)
• Push Rod Length: 10.55"
• Push Rod Diameter: 5/8"-18 UNF, fully threaded
• Port Size & Type: Dual 3/8"-18 NPTF, square ports (long stroke identification)
• Chamber Height: 10.55"
• Stud Mounting: 2 × Stud, 5/8"-11 UNC, 1.50" long
• Stud Spacing: 4.75" (120.65 mm) center-to-center
• Diaphragm Diameter: 8"
• Mounting Hole Size: 0.63"
• Bolt Circle: 4.75"
• Weight: Approx. 20.1 lb (combination chamber)
• Construction: Dual-diaphragm sealed design, epoxy-coated components, molded nitrile rubber air seal
• Technology: Corrosion Fighter coating, tamper-resistant body, breather-tube technology, polymer wear guides, long-life power spring
• Special Features: Yellow band (long stroke ID), integral release bolt, high cycle life design
• Performance: Severe-duty spec for extreme weather and brake load environments
• Compliance: Meets FMVSS-121 and SAE J1469 brake chamber performance standards
• Compatibility: OE drop-in replacement for 30/30LS service chambers from major North American manufacturers
Applications:
Used on drive and trailer axles of commercial trucks and trailers requiring long stroke brake chambers. Common in long-haul, heavy-duty, and vocational fleets with high brake cycle demands. Direct fit for OE and aftermarket systems including those from Freightliner, Mack, Kenworth, and more.
CROSS-REFERENCE(S):
SB3030S3000, 3030S3000, S3000, 3030LS, LP3030, LS, 170.3030LS, 170.3030LS3000, 3431952, 3431952X, 40010330, GC3030LS, 3030TN2-3000, 3030TS2-3000, R955205, R955205X, K121568, K121568X, E-11797, AS1140, P3030LS, 701073, KN31000, 90557157, 5050-3030LS, 650-3030LS, RA3030LS, 7-3030LS, S-3030LS, SB3030LS, NT3030ELS80, 3230051, A3030LS, 179.SB3030SL, 179.SB3030SLX, 3030CL, 3030CLE, 3030CLS, BC3030LS, K3030LC, LT3030T, WA3030TL, AKGC3030L, S-17204, HDVLS30UC, 4C4Z2225CA, SB3030CL, BXNT3030ELS80, ZAJ3230051, ZZGC3030L, ABPN42A33030C3D, ABPN42A43030C3D, 1000-SB3030LS, DIP12960, 12960, HALGC3030L, GC3030L, BEN-NT3030ELS-80, HDX-GC3030L, CWBWHNT3030ELS80, MDGC3030L, MM3230051A 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 wheels securely before removing brake chamber
✔ Depressurize air system before installation
✔ Install using original clamp band or mounting studs
✔ Torque mounting hardware to OEM spec (35–40 ft-lbs)
✔ Route service and emergency ports correctly
✔ Adjust push rod length to axle/brake spec (cut to fit if necessary)
✔ Yoke not included – verify thread compatibility
✔ Leak test system post-installation and check full actuation
✔ Confirm OE match and port orientation before purchase
✔ For long stroke identification, verify yellow band and stroke alert
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