Chevy S10 Brake Booster, Fits Blazer, GMC Sonoma & Jimmy 1998-2005 (54-74822)

If the pedal on your S10 or Blazer has gone hard, or you hear a hiss under the dash when you brake, the booster diaphragm has probably split. This Chevy S10 brake booster is a new vacuum booster for the small GM trucks and SUVs of 1998-2005. The master cylinder is not included, so you reuse your existing one.

Specifications

• Type: vacuum power brake booster
• Diaphragm diameter: 277.2 mm / 10.915 in
• Master cylinder: not included
• Material: steel, black finish
• Condition: new aftermarket part
• In the box: 1 power brake booster

Part numbers

54-74822, 5474822, 18029871, 8180298710, 80631, AA15474822, 14PB4316, 225989, 488877002

Vehicles this Chevy S10 brake booster fits

• Chevrolet S10 2.2L and 4.3L, 1998-2004
• Chevrolet Blazer 4.3L, 1998-2005
• GMC Sonoma 2.2L and 4.3L, 1998-2004
• GMC Jimmy 4.3L, 1997-2005
• Isuzu Hombre 4.3L, 1998-2000
• Oldsmobile Bravada 4.3L, 1998-2001

On the 1997 Jimmy, check the brake code on the service parts sticker before ordering.

Fitting notes

Check the vacuum hose and check valve first, since a leak there feels the same as a failed booster. No instructions are included, so a shop manual helps. More on the vacuum servo principle is on Wikipedia.

See also the Chevy C10 power brake booster, the Silverado 1500 rear brake calipers, Chevrolet parts, GMC parts and all brake parts. Shipping is free on every order, and delivery details are on our shipping page.

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