Vacuum Power Brake Booster for Cadillac Escalade 2002; GMC Sierra 1500-3500 & Yukon XL 1999-2002; Chevrolet Avalanche, Tahoe, Silverado, Suburban 1999-2002 | OEM# 54-74818, 5474818, 18060777

Compatible with CadillacEscalade/ EXT 2002 Compatible with ChevroletAvalanche 1500/2500 2002 Silverado 1500 1999–2002 Silverado 1500 HD/3500 2001–2002 Silverado 2500 1999 Suburban 1500/2500 2000–2002 Tahoe 2000 ｜With Brake Code JC5Tahoe 2001–2002 Compatible with GMCSierra 1500 1999–2002 Sierra 1500 HD/3500 2001–2002 Sierra 2500 1999 Yukon 2000  ｜With Brake Code JC5Yukon 2001–2002 Yukon XL 1500/2500 2000–2002 Diaphragm Diameter 277.37 mmDiaphragm Diameter 10.915 inHousing Diameter 11.063 INHousing Diameter 281 mmMaster Cylinder Stud Thread Size M10x1.5Stud Thread Size M10x1.5

• Vehicle Compatibility：Compatible with Cadillac Escalade 2002,Compatible with GMC Sierra 1500 1999–2002, 2500 1999, 3500 2001–2002, Yukon XL 1500 2000–2002,Compatible with Chevrolet Avalanche 1500/2500 2002, Tahoe 2000–2002, Silverado 1500 1999–2002, 2500 1999, 3500 2001–2002, Sonoma 2002, Suburban 1500/2500 2000–2002.
• OEM Replacement Numbers：54-74818, 5474818, 18060777, 18042073, SK5474818.Fully interchangeable with the original factory part. Please confirm your OEM number or vehicle configuration before purchasing.
• Restore Braking Performance：Effectively restores vacuum pressure and braking assist function. Provides stable braking force, reduced pedal effort, and a smooth, consistent braking response in all driving conditions.
• Easy Installation：Designed as a direct-fit replacement for the factory unit — no modification or special tools required. Connects directly to the existing master cylinder and vacuum hose for quick and clean installation.
• Durable Construction：Built with reinforced steel housing and high-quality diaphragm materials to resist corrosion, deformation, and leakage. Each unit is individually tested to ensure long-lasting and reliable performance.